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Exam A QUESTION 1
DRAG DROP
Drag the definition of the resource on the left to the media resource type on the right No1 all media resources are used.
Drag and drop question. Drag the items to the proper locations. Drag the definition of the resource on the left to the media resource type on the right No1 all media resources are useD.
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference:
ActualTests.com
“Pass Any Exam. Any Time.” – www.actualtests.com 2 Cisco 642-446: Practice Exam Explanation: Drag and drop question. Drag the items to the proper locations.
QUESTION 2
Which three steps need to be performed on a third party SIP phone device when adding it to Cisco Unified Communications Manager 6.0? (Choose three.)
A. Select XML as the method to send the third party SIP phone its configuration file.
B. Add the MAC address of the Cisco Unified Communications Manager server to the SIP phone ActualTests.com configuration.
C. Set the directory numbers to match the directory numbers configured in Cisco Unified Communications Manager.
D. Set the digest user ID in the SIP device to match the digest user ID in Cisco Unified Communications Manager.
E. Set the TLS user ID and password in the SIP phone to match the TLS user ID and password in Cisco Unified Communications Manager.
F. Set the proxy address in the SIP phone to match the IP address or fully qualified domain name of Cisco Unified Communications Manager.
Correct Answer: CEF Section: (none) Explanation
Explanation/Reference:
“Pass Any Exam. Any Time.” – www.actualtests.com 3 Cisco 642-446: Practice Exam
QUESTION 3
Which two gateway configuration statements are required in order to enable Cisco Unified Communications Manager to control a T1 PRI in an MGCP gateway? (Choose two.)
A. mgcp
B. ccm-manager config
C. pri-group configuration on the controller
D. mgcp call-agent pointing to tftp server
E. isdn 13-backhaulccm-manager on the serial interface
F. ccm-manager config server {TFTP ip_address}
Correct Answer: BF Section: (none) Explanation
QUESTION 4
DRAG DROP
Click and drag the XML application service information field name on the left to its Answer: description on the right
ActualTests.com Drag and drop question. Drag the items to the proper locations. Click and drag the XML application service information field name on the left to its description on the right
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference:
“Pass Any Exam. Any Time.” – www.actualtests.com 4 Cisco 642-446: Practice Exam
QUESTION 5
If a service is currently deactivated, how can the service be reactivated from the Cisco Unified Communications Manager Serviceability Control Center page?
A. by clicking on the radio button to the left of the service on the Control Center page
B. by selecting Cisco Unified CM Serviceability > Service Activation and then clicking on the radio button to the left of the service to activate it
C. by selecting Tools > Service Activation, selecting the Answer:server, and clicking on the radio button to the left of the service to activate it
D. by selecting Cisco Unified CM Serviceability > Tools, clicking on the radio button to the left of the service that needs to be activated, and then returning to the Control Center to activate the service
Correct Answer: C Section: (none) Explanation
QUESTION 6
ActualTests.com
Which two of these media resources are available only in hardware? (Choose two.)
A. trans coding
B. audio conferencing
C. MTP
D. annunciator
E. MOH
F. voice termination
Correct Answer: AF Section: (none) Explanation
Explanation/Reference:
“Pass Any Exam. Any Time.” – www.actualtests.com 5 Cisco 642-446: Practice Exam
QUESTION 7
DRAG DROP
Click and drag the MoH server parameter on the left to its description on the right. Not all parameters apply.
Drag and drop question. Drag the items to the proper locations.
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference:
ActualTests.com Explanation: “Pass Any Exam. Any Time.” – www.actualtests.com 6 Cisco 642-446: Practice Exam
QUESTION 8
Which three steps are necessary in order to configure DHCP for phone support using the GUI in Cisco Unified Communications Manager 6.0? (Choose three.)
A. add the DHCP server IP address to the device pool
B. activate DHCP Monitor Service
C. add and configure the DHCP server
D. start the application on an external server
E. configure the DHCP subnet
F. download the DHCP server application from the plug-in page
Correct Answer: BCE Section: (none) Explanation
QUESTION 9
Which two of these are characteristics of multicast music on hold? (Choose two.)
A. point-to-multipoint, two-way audio stream
B. separate audio stream for each connection
C. multiple audio streams that require multiple multicast IP addresses
D. support for allcodecs that are also supported by Cisco Unified Communications Manager servers
E. conservation of system resources and bandwidth
F. the requirement that there always be a dedicated MOH server
Correct Answer: CE Section: (none) Explanation
Explanation/Reference:
ActualTests.com
QUESTION 10
Which three determinations are possible when using the Presence feature in a Cisco Unified Communications network? (Choose three.)
A. Determine if an IP phone has been unplugged if the phone is in the same Cisco Unified
Communications cluster as the watcher.
B. Determine if an IP phone is on hook or off hook if the phone is outside the Cisco Unified Communications cluster of the watcher.
C. Determine if an IP phone is on hook or off hook if the phone is in the same Cisco Unified Communications cluster as the watcher.
D. Determine if a set of IP phones is on hook or off hook if the phones are in the same Cisco Unified Communications cluster as the watcher. “Pass Any Exam. Any Time.” – www.actualtests.com 7 Cisco 642-446: Practice Exam
E. Determine if an IP phone has been moved or the user has been changed if the phone is in the same Cisco Unified Communications cluster as the watcher.
F. Determine if an IP phone has been off hook beyond a specified period of time if the phone is in the same Cisco Unified Communications cluster as the watcher.
Correct Answer: BCD Section: (none) Explanation
QUESTION 11
DRAG DROP
Click and drag the function of the left to the type of barge that it indicates.
Drag and drop question. Drag the items to the proper locations. Click and drag the function of the left to the type of barge that it indicates.
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference:
ActualTests.com Explanation: “Pass Any Exam. Any Time.” – www.actualtests.com 8
Drag and drop question. Drag the items to the proper locations.
QUESTION 12
The Ajax Corporation is designing an IP telephony network using Cisco MCS 7845 Series servers, each one capable of supporting 7500 devices. The design must meet these requirements:
(1)
be cost-effective
(2)
support up to 7500 phones
(3)
provide a minimal level of redundancy
Which configuration will meet Ajax Corporation’s needs?
A. two Cisco Unified Communications Manager servers: ActualTests.com 1 publisher and TFTP server combined 1 primary subscriber
B. three Cisco Unified Communications Manager servers: 1 publisher and TFTP server combined 1 primary subscriber 1 backup subscriber
C. four Cisco Unified Communications Manager servers: 1 publisher 1 TFTP server 1 primary subscriber 1 backup subscriber
D. five Cisco Unified Communications Manager servers: 1 publisher “Pass Any Exam. Any Time.” – www.actualtests.com 9 Cisco 642-446: Practice Exam 1 TFTP server 1 primary subscriber 2 backup subscribers
Correct Answer: B Section: (none) Explanation
QUESTION 13
DRAG DROP
Click and drag the hyperlink label on the left to the information it supplies on the right when a user browses to a Cisco Unified IP Phone 7970G. Not all labels will be used.
Drag and drop question. Drag the items to the proper locations. Click and drag the hyperlink label on the left to the information it supplies on the right when a user browses to a Cisco Unified IP Phone 7970G. Not all labels will be used.
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
ActualTests.com Explanation: “Pass Any Exam. Any Time.” – www.actualtests.com 10
Drag and drop question. Drag the items to the proper locations.
QUESTION 14
What is one difference between Cisco inline power and 802.3af PoE?
A. Cisco inline power should only be activated for those ports that requirePoE to avoid oversubscription.
B. You must determine the total number of IP phones the switch can support with 802.3af to avoid oversubscription.
C. You must specify which set of pins the powered device is going to accept power on for 802.3af.
D. Cisco inline power provides a variable amount of power by using CDP.
Correct Answer: B Section: (none) Explanation
QUESTION 15
Which IP phone hardening technique will prevent call signaling and media stream tampering?
ActualTests.com
A. disable GARP
B. disable PC.to-voice VLAN access
C. use MIC firmware images signed by Cisco
D. store IP phone configuration files on the SFTP server
E. deploy authentication and encryption between IP phones and Cisco Unified Communications Manager
Correct Answer: E Section: (none) Explanation
QUESTION 16
Which best describes the purpose of a Cisco Unity voice-mail profile?
“Pass Any Exam. Any Time.” – www.actualtests.com 11 Cisco 642-446: Practice Exam
A. to determine whether to use the MWI on number and the MWI off number
B. to determine the number that is dialed when users press the Message button
C. to define voice-mail-related attributes
D. to assign a partition to any email-related number
Correct Answer: C Section: (none) Explanation
QUESTION 17
A range of Meet-Me conference numbers is reserved for manager use. Which method can be used to restrict non-managers from accessing these Meet-Me numbers without limiting their ability to initiate ad hoc conferences?
A. Place the Meet-Me numbers in an MRGL that is only assigned to the managers’ phones.
B. Place the Meet-Me numbers in a partition that is only assigned to the CSS for the managers’ phones.
C. Place the conference bridge resource in an MRGL that is only assigned to the managers’ phones.
D. Place the conference bridge resource in a partition that is only assigned to the CSS for the managers’ phones.
Correct Answer: B Section: (none) Explanation
QUESTION 18
What is the minimum number of partitions that must be defined given the dial-plan rules listed below?
ActualTests.com All employees can call local and service numbers. Managers can call long-distance and international numbers. Executives can call all PSTN numbers including premium numbers. Only administrative assistants can call executives. Incoming calls can only be routed to phones, not to trunks.
A. 3
B. 4
C. 5
D. 6
E. 7
F. 8
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
“Pass Any Exam. Any Time.” – www.actualtests.com 12 Cisco 642-446: Practice Exam
QUESTION 19
The Show menu in which navigation window will allow you to determine the model, type of processors, and total memory in a Cisco Unified Communications Manager 6.0 server?
A. Cisco Unified Communications Manager Administration
B. Cisco Unified Communications Manager Serviceability
C. Disaster Recovery System
D. Platform Administration
E. Cisco Unified Operating System Administration
Correct Answer: E Section: (none) Explanation
QUESTION 20
Refer to the exhibit. A call is placed from DN 5000 to DN 6999. The CSS for the call includes only the Branch 1 partition. After the translation pattern is applied, what are the called and calling numbers?
ActualTests.com
A. 6999, 5000
B. 14085556999, 5000
C. 6999, 19195555000
D. 5556999, 9195555000
E. 14085556999, 19195555000 “Pass Any Exam. Any Time.” – www.actualtests.com 13 Cisco 642-446: Practice Exam
Correct Answer: E Section: (none) Explanation
QUESTION 21
When using 802.3af inline power, what is the default power wattage that the Catalyst switch provides to an IP phone?
A. 0 watts
B. 4 watts
C. 7 watts
D. 15.4 watts
Correct Answer: D Section: (none) Explanation
QUESTION 22
In reference to translation patterns, which three statements are Answer: ? (Choose three.)
A. Translation patterns can be used to change the CSS applied to a call.
B. Translation patterns can be used to modify the redirecting number.
C. Translation patterns can be used to modify the calling number.
D. After matching a translation pattern and performing digit transformations, the call is sent to the original called number.
E. Translation patterns cannot contain wildcards.
F. Translation patterns are always considered urgent priority.
Correct Answer: ACF Section: (none) Explanation
Explanation/Reference:
ActualTests.com
QUESTION 23
Which three events describe the relationship of an IP phone to its secondary subscriber in a Cisco Unified Communications Manager system? (Choose three.)
A. The IP Phone sends a TCP connect message.
B. The IP Phone sends a TCP keep alive message every 30 seconds.
C. The IP Phone sends a TCP keep alive message every 60 seconds.
D. The IP Phone registers with the primary system when the secondary system is unavailable.
E. The IP Phone attempts to register with the secondary system when the primary system is unavailable.
F. The IP Phone registers with all the CiscoCisco Unified Communications Manager subscribers in the group simultaneously, including the secondary subscriber. “Pass Any Exam. Any Time.” – www.actualtests.com 14 Cisco 642-446: Practice Exam
Correct Answer: ABE Section: (none) Explanation
QUESTION 24
Refer to the exhibit. You have six IP phones configured to use MRGL_CFB. Each phone is making a conference call. Which conference resource does the sixth conference use?
A. HW_CFB_1
B. HW_CFB_2
C. SW_CFB_1
D. SW_CFB_2
E. SW_CFB_3
Correct Answer: D Section: (none) Explanation
QUESTION 25
DRAG DROP ActualTests.com Click and drag the type of access being controlled on the left to the account name on the right.
“Pass Any Exam. Any Time.” – www.actualtests.com 15 Cisco 642-446: Practice Exam Drag and drop question. Drag the items to the proper locations. Click and drag the type of access being controlled on the left to the account name on the right.
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference:
ActualTests.com Explanation: “Pass Any Exam. Any Time.” – www.actualtests.com 16
Drag and drop question. Drag the items to the proper locations.
QUESTION 26
Refer to the exhibit. You have six IP phones making six conference calls. Which conference resource will Conference 4 use?
ActualTests.com
A. HW_CFB_1
B. HW_CFB_2
C. SW_CFB_1
D. SW_CFB_2
E. SW_CFB_3
Correct Answer: C Section: (none) Explanation QUESTION 27
Refer to the exhibit. You have six IP phones configured to use MRGL_CFB. There are currently five conferences in progress. What IP phone tries to initiate a conference?
“Pass Any Exam. Any Time.” – www.actualtests.com 17 Cisco 642-446: Practice Exam
A. the conference will use SW_CFB_3 since it is the default and is not assigned to MRGL_CFB
B. the conference will be attempted until the MRGL timer expires
C. the first conference resource that becomes available will be used for conference 6
D. the conference will be rejected because there are no conference resources left
Correct Answer: D Section: (none) Explanation
QUESTION 28
Which of these is a characteristic of the Cisco Unified Communications Manager Bulk Administration Tool in Cisco Unified Communications Manager 6.0?
A. Cisco Unified Communications Manager Auto-Register Phone Tool is part of Bulk Administration.
B. Cisco Unified Communications Manager BAT needs to be installed from the plug-in page.
C. Cisco Unified Communications Manager BAT pages are available from the Serviceability page.
D. Cisco Unified Communications Manager Auto-Register Phone Tool requires a Customer ActualTests.com Response System.
Correct Answer: A Section: (none) Explanation
QUESTION 29
You want to deploy a mixture of unicast and multicast MOH streams. You need to configure 12 multicast streams, each supporting two codecs. How many unicast streams can be configured, assuming 250 is the maximum number of MOH streams supported on your MOH server?
A. 204
B. 214 “Pass Any Exam. Any Time.” – www.actualtests.com 18 Cisco 642-446: Practice Exam
C. 226
D. 250
Correct Answer: C Section: (none) Explanation
QUESTION 30
Refer to the exhibit. What CSS should be assigned to a phone in the Phones partition to block calls to international numbers while allowing all other calls?
A. CSS B
B. CSS D
C. CSS C
D. CSS A
Correct Answer: C Section: (none) Explanation
QUESTION 31
If a SIP phone has neither KPML nor a set of dial rules configured, how are digits sent to Cisco Unified Communications Manager for further processing?
A. the user must press the # key
B. the user must press the Dialsoftkey
C. the user must press theenbloc softkey
D. when the user finishes dialing, the digits will be sent automatically
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
ActualTests.com
QUESTION 32
A single route pattern has been added to Cisco Unified Communications Manager to use the NANP. A route filter named Local_Only has been applied to limit calls to local and service numbers only. The Local_Only route filter includes the clause: (LOCAL-AREA. CODE EXISTS AND SERVICE EXISTS). After applying the Local_Only route filter, no calls to the PSTN can be completeD. What needs to be done to Answer: this issue?
A. Two separate route filters need to be applied to the route pattern, one for local calls and one for services.
B. The route pattern needs to be added twice, once with a route filter for local calls and once with a route filter for services. “Pass Any Exam. Any Time.” – www.actualtests.com 19 Cisco 642-446: Practice Exam
C. Route filters cannot be used to allow multiple call types. Specific route patterns for local calls and services need to be added.
D. The route filter clause should be changed to (LOCAL-AREA. CODE DOES-NOT-EXIST AND SERVICES DOES-NOT-EXIST) and the route pattern should be set to block calls. )
E. The route filter clause should be changed to (LOCAL-AREA. CODE EXISTS OR SERVICES EXISTS).
Correct Answer: B Section: (none) Explanation
QUESTION 33
Which two of these accurately describe Cisco Unified Communications Manager users? (Choose two.)
A. associated with devices
B. cannot use LDAP
C. use interactive logins
D. not included in user directories
E. used to enable user features
Correct Answer: BD Section: (none) Explanation
QUESTION 34
Which two features are advantages of deploying a cluster over WAN? (Choose two.)
A. shared line appearances
B. centralized DSP resources
C. extension mobility within the cluster ActualTests.com
D. scalability up to 20 sites, if there is sufficient IP WAN bandwidth
E. failover to co-resident Cisco Unified Call Manager Express platforms
Correct Answer: AC Section: (none) Explanation
QUESTION 35
What is the process of digit matching?
A. Cisco Unified Communications Manager first performs a digit-by-digit analysis, looking for patterns that match the internal directory numbers. If no match is found, the dialed string is matched against the route patterns. “Pass Any Exam. Any Time.” – www.actualtests.com 20 Cisco 642-446: Practice Exam
B. Cisco Unified Communications Manager collects all digits and compares them en bloc for patterns that match the internal directory numbers. If no match is found, the dialed string is matched against the route patterns.
C. Cisco Unified Communications Manager performs a digit-by-digit analysis, looking for patterns that match the internal directory numbers and ones that match the route patterns simultaneously.
D. Cisco Unified Communications Manager collects all digits and compares them en bloc for patterns that match the internal directory numbers and ones that match the route patterns simultaneously.
Correct Answer: C Section: (none) Explanation
QUESTION 36
Which two can be targets of a route pattern? (Choose two.)
A. gateway
B. gatekeeper “I
C. route group
D. route list
E. translation pattern
F. CTI Port
Correct Answer: AD Section: (none) Explanation
QUESTION 37
Refer to the exhibit. What should be entered in the Name field when configuring Cisco Unified Communications Manager to control voice port T1 1/0/0 in BR2 GW? ActualTests.com
“Pass Any Exam. Any Time.” – www.actualtests.com 21 Cisco 642-446: Practice Exam
A. S0/DS1-0@BR2_GW
B. BR2_GW
C. 10.2.120.1
D. S0/DS1@SDA0012005FEEF0
Correct Answer: B Section: (none) Explanation
QUESTION 38
What happens when you try to configure a fourth member of a Cisco Unified Communications Manager group?
A. The fourth member will be added to the sequential list.
B. The new member will replace the first member on the list. ActualTests.com
C. The new member will replace the last member on the list.
D. Cisco Unified Communications Manager Administration will display an error message.
Correct Answer: D Section: (none) Explanation
QUESTION 39
Which three characteristics are used to determine which devices go into a device pool? (Choose three.)
A. Device type
B. Class of service “Pass Any Exam. Any Time.” – www.actualtests.com 22 Cisco 642-446: Practice Exam
C. Geographic proximity
D. Extension mobility CSS
E. User hold MOH source
F. auto-registration CSS
Correct Answer: CEF Section: (none) Explanation
QUESTION 40
When a Cisco Unified Communications Manager group has its primary, secondary, and tertiary servers changed, how are those changes propagated to the IP phones registered to the group?
A. The IP phones will automatically register with the new primary server.
B. The IP phones will need to be reset so that a new configuration file can be downloaded from the TFTP server.
C. The primary Cisco Unified Communications Manager server automatically pushes a new configuration file to the IP phones in the affected device pool.
D. The device pools will need to be edited so that the new Cisco Unified Communications Manager group information is applied to the appropriate device pools.
Correct Answer: B Section: (none) Explanation
QUESTION 41
A dial peer is configured with an outgoing COR list. Which two conditions must be met for calls matching this outbound dial peer to be blocked? (Choose two.)
A. An incoming COR list must be configured on the matched inbound dial peer.
B. An incoming COR list must be configured on the matched outbound dial peer. ActualTests.com
C. The outgoing COR list must be a superset of the incoming COR list.
D. The incoming COR list and the outgoing COR list must contain the same members.
E. The outgoing COR list must be a subset of the incoming COR list.
Correct Answer: AC Section: (none) Explanation
QUESTION 42
ABC Company has four locations total, all connected via an IP WAN. Each location has a Cisco Unified Communications Manager cluster, and the headquarters cluster is connected to all other clusters via inter cluster trunks. ABC wants to allow up to eight simultaneous calls across the IP WAN. To call between sites, an employee dials a 2-digit access code plus a 4-digit extension. If more than eight calls are made, or if the IP WAN is not available, calls should be sent to ABC “Pass Any Exam. Any Time.” -www.actualtests.com 23 Cisco 642-446: Practice Exam
Company’s preferred long-distance carrier. If the trunk to the long-distance carrier is not available, the local provider should be used. The long-distance carrier requires 10 digits to complete a long- distance call. The local provider requires 11 digits to complete a long-distance call but only 7 digits for local calls.
What is the minimum number of route lists required at the headquarters location?
A. 1
B. 2
C. 3
D. 4
E. 5
Correct Answer: C Section: (none) Explanation
QUESTION 43
Which three menu choices will open a window in which you can assign softkey templates? (Choose three.)
A. Device > Phone Configuration
B. Device > Device Settings > Device Profile
C. Service > Service Parameters
D. System > Device Defaults Configuration
E. System > Device Pool Configuration
F. System > Enterprise Parameters
Correct Answer: ABE Section: (none) Explanation
Explanation/Reference:
ActualTests.com
QUESTION 44
When an IP phone boots up, which mechanism provides the VLAN ID?
A. CDP
B. DNS
C. DHCP
D. TFTP
E. Option 150
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
“Pass Any Exam. Any Time.” – www.actualtests.com 24 Cisco 642-446: Practice Exam
QUESTION 45
A Cisco Unified CM cluster is configured for LDAP Authentication. Which two statements regarding this integration are Answer: ? (Choose two.)
A. User passwords are configured and managed in LDAP.
B. User passwords are replicated to Cisco Unified Communications Manager database.
C. Users and their personal organization data must be configured in LDAP and are replicated to Cisco Unified Communications Manager database.
D. User authentication fails if the LDAP directory is not available.
E. LDAP synchronization is also configured, user authentication will be performed against the Cisco Unified Communications Manager database if the LDAP directory is not available.
Correct Answer: AD Section: (none) Explanation
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Exam A
QUESTION 1
Which two steps are required to configure LDAP authentication? (Choose two.)
A. Configure the LDAP server type in Cisco Unified Communications Manager Administration.
B. Configure LDAP server addresses in Cisco Unified Communications Manager Administration.
C. Add a Cisco Unified Communications Manager directory user and assign administrator access rights to the user in the LDAP directory.
D. Configure a synchronization schedule.
E. Activate Cisco DirSync service.
Correct Answer: BC Section: (none) Explanation
Explanation/Reference:
QUESTION 2
Which two statements regarding Cisco Unified Communications Manager user privileges are correct? (Choose two.)
A. A role can only be assigned to one user group.
B. An application can be referred to by only one role.
C. A resource is assigned one privilege per role.
D. A role refers to one or more applications.
E. A user can be a member of more than one user group.
Correct Answer: CE Section: (none) Explanation
Explanation/Reference:
QUESTION 3
The Ajax Corporation is designing an IP telephony network using Cisco MCS 7845 Series servers, each one capable of supporting 7500 devices. The design must meet these requirements:
*
be cost-effective
*
support up to 7500 phones
*
provide a minimal level of redundancy Which configuration will meet Ajax Corporation’s needs?
A.
five Cisco Unified Communications Manager servers: 1 publisher 1 TFTP server 1 primary subscriber 2 backup subscribers
B.
four Cisco Unified Communications Manager servers: 1 publisher 1 TFTP server 1 primary subscriber 1 backup subscriber
C.
two Cisco Unified Communications Manager servers: 1 publisher and TFTP server combined 1 primary subscriber
D.
three Cisco Unified Communications Manager servers: 1 publisher and TFTP server combined 1 primary subscriber 1 backup subscriber
Correct Answer: D Section: (none) Explanation
Explanation/Reference: QUESTION 4
DRAG DROP You work as a network administrator at Certkiller .com. Your boss, Miss Certkiller, is interested in barge types. You are required to match the barge types with the appropriate functions.
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference: QUESTION 5
Network Topology Exhibit:
Exhibit:
You work as a network administrator at Certkiller .com. You study the exhibit carefully.
What should be entered in the Name field when configuring Cisco Unified Communications Manager to control voice port T1 1/0/0 in Certkiller 2?
A. 10.2.120.1
B. S0/DS1@SDA0012005FEEF0
C. S0/DS1-0@ Certkiller 2
D. Certkiller 2
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 6
Which two features are advantages of deploying a cluster over WAN? (Choose two.)
A. scalability up to 20 sites, if there is sufficient IP WAN bandwidth
B. failover to co-resident Cisco Unified CallManager Express platforms
C. extension mobility within the cluster
D. shared line appearances
E. centralized DSP resources
Correct Answer: CD Section: (none) Explanation
Explanation/Reference:
QUESTION 7
Which three steps must be completed in order to assign a service URL to an IP phone button? (Choose three.)
A. Assign the IP phone service partition to the CSS of the phone.
B. Subscribe the phone to the service.
C. Create a softkey template that includes a service URL and assign it to the phone.
D. Create a phone button template that includes a service URL and assign it to the phone.
E. Add an IP phone service.
F. Associate a valid user profile with the phone.
Correct Answer: BDE Section: (none) Explanation
Explanation/Reference:
QUESTION 8
A single route pattern has been added to Cisco Unified Communications Manager to use the NANP. A route filter named Local_Only has been applied to limit calls to local and service numbers only. The Local_Only route filter includes the clause: (LOCAL-AREA-CODE EXISTS AND SERVICE EXISTS). After applying the Local_Only route filter, no calls to the PSTN can be completed.
What needs to be done to correct this issue?
A. Two separate route filters need to be applied to the route pattern, one for local calls and one for services.
B. The route filter clause should be changed to (LOCAL-AREA-CODE DOES-NOT-EXIST AND SERVICES DOES-NOT-EXIST) and the route pattern should be set to block calls.
C. Route filters cannot be used to allow multiple call types. Specific route patterns for local calls and services need to be added.
D. The route pattern needs to be added twice, once with a route filter for local calls and once with a route filter for services.
E. The route filter clause should be changed to (LOCAL-AREA-CODE EXISTS OR SERVICES EXISTS).
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 9
What is one difference between Cisco inline power and 802.3af PoE?
A. You must determine the total number of IP phones the switch can support with 802.3af to avoid oversubscription.
B. Cisco inline power should only be activated for those ports that require PoE to avoid oversubscription.
C. Cisco inline power provides a variable amount of power by using CDP.
D. You must specify which set of pins the powered device is going to accept power on for 802.3af.
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 10
Which three functions does the Master Agent perform? (Choose three.)
A. controls backup and restoration of the system
B. executes backup and restore tasks
C. interfaces with the DRS agent on the Administrator PC
D. stores DRS configuration
E. acts as a backup repository
F. communicates with archive devices
Correct Answer: ADF Section: (none) Explanation
Explanation/Reference:
QUESTION 11
A range of Meet-Me conference numbers is reserved for manager use. Which method can be used to restrict non-managers from accessing these Meet-Me numbers without limiting their ability to initiate ad hoc conferences?
A. Place the conference bridge resource in a partition that is only assigned to the CSS for the managers’ phones.
B. Place the conference bridge resource in an MRGL that is only assigned to the managers’ phones.
C. Place the Meet-Me numbers in an MRGL that is only assigned to the managers’ phones.
D. Place the Meet-Me numbers in a partition that is only assigned to the CSS for the managers’ phones.
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 12
A dial peer is configured with an outgoing COR list. Which two conditions must be met for calls matching this outbound dial peer to be blocked? (Choose two.)
A. The outgoing COR list must be a subset of the incoming COR list.
B. The outgoing COR list must be a superset of the incoming COR list.
C. The incoming COR list and the outgoing COR list must contain the same members.
D. An incoming COR list must be configured on the matched inbound dial peer.
E. An incoming COR list must be configured on the matched outbound dial peer.
Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
QUESTION 13
What is the correct procedure for implementing call coverage?
A. configure partitions, line groups, hunt lists, hunt pilot, directory numbers
B. configure partitions, directory numbers, hunt pilot, hunt list, line groups
C. configure directory numbers, partitions, hunt pilot, hunt list, line groups
D. configure partitions, directory numbers, line groups, hunt lists, hunt pilot
Correct Answer: D Section: (none) Explanation Explanation/Reference:
QUESTION 14
What is the process of digit matching?
A. Cisco Unified Communications Manager collects all digits and compares them en bloc for patterns that match the internal directory numbers and ones that match the route patterns simultaneously.
B. Cisco Unified Communications Manager collects all digits and compares them en bloc for patterns that match the internal directory numbers. If no match is found, the dialed string is matched against the route patterns.
C. Cisco Unified Communications Manager first performs a digit-by-digit analysis, looking for patterns that match the internal directory numbers. If no match is found, the dialed string is matched against the route patterns.
D. Cisco Unified Communications Manager performs a digit-by-digit analysis, looking for patterns that match the internal directory numbers and ones that match the route patterns simultaneously.
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 15
DRAG DROP You work as a network administrator at Certkiller .com. Your boss, Miss Certkiller, is interested in Cisco Accounts. You are required to match the access types with the appropriate accounts.
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference:
QUESTION 16
Which three steps must be completed in order to assign a service URL to an IP Phone button? (Choose three.)
A. Subscribe the phone to the service.
B. Associate a valid user profile with the phone.
C. Add an IP phone service.
D. Create a softkey template that includes a service URL and assign it to the phone.
E. Assign the IP phone service partition to the CSS of the phone.
F. Create a phone button template that includes a service URL and assign it to the phone.
Correct Answer: ACF Section: (none) Explanation
Explanation/Reference:
QUESTION 17
What is the minimum number of partitions that must be defined given the dial-plan rules listed below? All
employees can call local and service numbers.
Managers can call long-distance and international numbers.
Executives can call all PSTN numbers including premium numbers.
Only administrative assistants can call executives.
Incoming calls can only be routed to phones, not to trunks.
A. 6
B. 8
C. 7
D. 4
E. 3
F. 5
Correct Answer: F Section: (none) Explanation
Explanation/Reference:
QUESTION 18
Which two of these media resources are available only in hardware? (Choose two.)
A. audio conferencing
B. MOH
C. annunciator
D. voice termination
E. MTP
F. transcoding
Correct Answer: DF Section: (none) Explanation
Explanation/Reference:
QUESTION 19
Exhibit:
You work as a network administrator at Certkiller .com. You study the exhibit carefully.
When Bob dials extension 5000, which phone will ring?
A. Phone C
B. Phone A
C. Phone D
D. Phone B
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 20
Which of these two route patterns will be matched if 99118855 is dialed with en bloc dialing enabled?
9.911 Urgent Priority Enabled 9.[2-9]XXXXXX
A. The 9.911 pattern will be dialed first and if the call is not successful, then the other potential match will be attempted.
B. 9.911 will always be matched because it is tagged as Urgent Priority.
C. 9.[2-9]XXXXXX will be matched first because en bloc dialing is being used. The Urgent Priority tag will be ignored in this case.
D. There will be a tie between the two route patterns, and a random selection will be made.
E. Cisco Unified Communications Manager will not be able to determine which pattern to match. For this
reason, it will generate an annunciator message that the call cannot be completed as dialed.
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 21
Which three determinations are possible when using the Presence feature in a Cisco Unified Communications network? (Choose three.)
A. Determine if a set of IP phones is on hook or off hook if if the phones are in the same Cisco Unified Communications cluster as the watcher.
B. Determine if an IP phone is on hook or off hook if the phone is in the same Cisco Unified Communications cluster as the watcher.
C. Determine if an IP phone is on hook or off hook if the phone is outside the Cisco Unified Communications cluster of the watcher.
D. Determine if an IP phone has been moved or the user has been changed if the phone is in the same Cisco Unified Communications cluster as the watcher.
E. Determine if an IP phone has been unplugged if the phone is in the same Cisco Unified Communications cluster as the watcher.
F. Determine if an IP phone has been off hook beyond a specified period of time if the phone is in the same Cisco Unified Communications cluster as the watcher.
Correct Answer: ABC Section: (none) Explanation
Explanation/Reference:
QUESTION 22
What are two reasons to use IP addresses instead of DNS in a Cisco Unified Communications Manager cluster? (Choose two.)
A. makes IP address changes easier
B. reduces the number of potential sources of failure
C. improves IP address scalability
D. simplifies troubleshooting
E. simplifies management
Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
QUESTION 23
Which two can be targets of a route pattern? (Choose two.)
A. gateway
B. gatekeeper
C. route list
D. translation pattern
E. route group
F. CTI Port
Correct Answer: AC Section: (none) Explanation
Explanation/Reference:
QUESTION 24
A user’s phone Call Forward No Answer setting has been configured to forward to a hunt pilot. If all call hunting options have been exhausted and the Forward Hunt No Answer feature has been configured to use Personal Preference settings, to which of these will calls to this phone be forwarded?
A. voice mail
B. any destination configured under the user’s DN Personal Settings configuration
C. the destination specified under the user’s Call Forward No Coverage settings
D. no other destination; each call will continue to ring until the caller hangs up
E. the default destination configured under Service Parameters
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 25
A Cisco Unified CM cluster is configured for LDAP Authentication. Which two statements regarding this integration are correct? (Choose two.)
A. If LDAP synchronization is also configured, user authentication will be performed against the Cisco Unified Communications Manager database if the LDAP directory is not available.
B. User passwords are replicated to Cisco Unified Communications Manager database.
C. User authentication fails if the LDAP directory is not available.
D. User passwords are configured and managed in LDAP.
E. Users and their personal organization data must be configured in LDAP and are replicated to Cisco Unified Communications Manager database.
Correct Answer: CD Section: (none) Explanation
Explanation/Reference:
QUESTION 26
You want to deploy a mixture of unicast and multicast MOH streams. You need to configure 12 multicast streams, each supporting two codecs. How many unicast streams can be configured, assuming 250 is the maximum number of MOH streams supported on your MOH server?
A. 226
B. 250
C. 204
D. 214
Correct Answer: A Section: (none) Explanation Explanation/Reference:
QUESTION 27
Which three steps are necessary in order to configure DHCP for phone support using the GUI in Cisco Unified Communications Manager 6.0? (Choose three.)
A. download the DHCP server application from the plug-in page
B. activate DHCP Monitor Service
C. configure the DHCP subnet
D. add and configure the DHCP server
E. start the application on an external server
F. add the DHCP server IP address to the device pool
Correct Answer: BCD Section: (none) Explanation
Explanation/Reference:
QUESTION 28
When an IP phone boots up, which mechanism provides the VLAN ID?
A. CDP
B. DHCP
C. TFTP
D. Option 150
E. DNS
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 29
Which three menu choices will open a window in which you can assign softkey templates? (Choose three.)
A. System > Enterprise Parameters
B. System > Device Defaults Configuration
C. Service > Service Parameters
D. Device > Phone Configuration
E. System > Device Pool Configuration
F. Device > Device Settings > Device Profile
Correct Answer: DEF Section: (none) Explanation
Explanation/Reference:
QUESTION 30
Exhibit: You work as a network administrator at Certkiller .com. You study the exhibit carefully.
You have six IP phones configured to use MRGL_CFB. There are currently five conferences in progress. What will happen if the sixth IP phone tries to initiate a conference?
A. the conference will be rejected because there are no conference resources left
B. the conference will be attempted until the MRGL timer expires
C. the conference will use SW_CFB_3 since it is the default and is not assigned to MRGL_CFB
D. the first conference resource that becomes available will be used for conference 6
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
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Exam A
QUESTION 1
Identify the VoIP network component that provides CAC, bandwidth control and management, and address translation.
A. MCU
B. Gatekeeper
C. Call agent
D. Gateway
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 2
Which two statements describe the purpose of the technology prefix? (Choose two.)
A. Technology prefixes are configured on gateways to indicate to the gatekeeper whether they support voice or video.
B. Technology prefixes must always be configured on gateways.
C. Technology prefixes are used to identify different types or classes of gateways.
D. Technology prefixes are prepended to the destination address by the gateway.
E. Technology prefixes have to be unique on each gateway.
Correct Answer: CD Section: (none) Explanation
Explanation/Reference:
QUESTION 3
Which two of the following signaling protocols are peer-to-peer protocols? (Choose 2)
A. H.323
B. SCCP
C. SIP
D. MGCP
Correct Answer: AC Section: (none) Explanation
Explanation/Reference:
QUESTION 4
Which three headers are compressed by cRTP? (Choose 3)
A. TCP
B. IP
C. Data link
D. UDP
E. RTP
Correct Answer: BDE Section: (none) Explanation
Explanation/Reference:
QUESTION 5
The partial configuration of a Cisco device of the PASSGUIDE company is shown as follows:
PassGuide.com-Make You Succeed To Pass IT Exams PassGuide 642-436
Which command will restore communication with gatekeeper functionality to this device on the basis of the example output?
A. h323-gateway voip bind srcaddr 1721622
B. gateway
C. h323-gateway voip h323-id GK1
D. h323-gateway voip GW1-zone2abc.com abc.com ipaddr 1721621
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 6
Which of the following best describes a function of RTCP?
A. RTCP uses even-numbered UDP ports in the range 16,384-32,767 to transport voice payloads.
B. RTCP caches an RTP packet’s Layer 3 and Layer 4 headers in the routers at each end of a link, resulting in lower bandwidth demand for subsequent RTP packets.
C. RTCP provides out-of-band control information for an RTP flow.
D. RTCP provides encryption, message authentication and integrity, and anti-replay service for voice streams.
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 7
Refer to the exhibit. Which two actions would be initiated by a UAS? (Choose two.)
PassGuide.com-Make You Succeed To Pass IT Exams PassGuide 642-436
A. Contacts the user when a SIP invitation is received
B. Originates the REFER method to initiate call termination
C. Returns a response on behalf of the user to the invitation originator
D. Originates the INVITE method including a description of the session parameters
E. Originates the ACK method to indicate that it has received a response to an invitation
Correct Answer: AC Section: (none) Explanation
Explanation/Reference:
QUESTION 8
Which three of the following are appropriate solutions to address latency issues in a VoIP network? (Choose 3)
A. Use SRTP instead of RTP.
B. Increase bandwidth.
C. Use dejitter buffers.
D. Fragment data packets.
E. Prioritize voice packets.
Correct Answer: BDE Section: (none) Explanation Explanation/Reference:
QUESTION 9
For the following options, which one is correct about the MGCP call agent?
A. monitors the quality of each call after setup
B. provides only call signaling and call setup
C. acts only as a recorder of call details
D. manages all aspects of the call and voice stream
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 10
Which two of the following VoIP gateway platforms are considered to be Integrated Services Routers (ISRs)? (Choose 2)
A. Cisco Catalyst 6500 Series
B. Cisco 2800 Series
C. Cisco 2600XM Series PassGuide.com-Make You Succeed To Pass IT Exams PassGuide 642-436
D. Cisco 3800 Series
Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
QUESTION 11
The Cisco Gatekeeper maintains a record of all active calls so that it can manage the bandwidth resources in its zone. Which statement is true about gatekeeper operation when the technology prefix is matched and the gatekeeper is using the technology prefix with hopoff?
A. The gatekeeper always forwards the call to the zone specified in the hopoff command.
B. The gatekeeper attempts to forward the call to the hopoff zone, but if this fails, it will forward the call to the zone specified in the zone prefix command.
C. The gatekeeper attempts to forward the call to the zone specified in the zone prefix command first, but if this fails, it will forward the call to the zone specified in the hopoff command.
D. The gatekeeper only forwards the call to the hopoff zone if the zone prefix does not match.
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 12
In a Cisco UCM single-site deployment, what is the maximum number of IP phones that can register with a UCM cluster?
A. 10,000
B. 2500
C. 7500
D. 30,000
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 13
As a network technician for the PASSGUIDE Company, you are responsible for designing and maintaining VoIP network. The VoIP network topology of the PASSGUIDE company is displayed as follows:
PassGuide.com-Make You Succeed To Pass IT Exams PassGuide 642-436
On the basis of the exhibit presented. All IP phones are SCCP phones. Phone D makes an internal call to phone
A. Which call setup signaling statement is correct?
B. Phone D signals gateway A, which processes the call and signals phone G.
C. Phone D signals gateway B, which processes the call and signals phone G.
D. Phone D signals gatekeeper. The gatekeeper processes the call and signals phone G.
E. Phone D signals phone G directly. Call setup is handled by the phones.
F. Phone D signals the call agent. The call agent processes the call and signals phone G.
Correct Answer: E Section: (none) Explanation
Explanation/Reference: QUESTION 14
In a Cisco UCM multisite WAN with centralized call-processing deployment model, what redundancy feature should be configured on remote site routers to provide basic IP telephony services in the event of a WAN outage?
A. CAC
B. SRST
C. V3PN
D. AAR
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 15
The VoIP network topology of the PASSGUIDE company is displayed as follows:
Refer to the exhibit. All IP phones use SCCP. Fax machine F calls fax machine J. Which call setup
signaling description is true?
PassGuide.com-Make You Succeed To Pass IT Exams
PassGuide 642-436
A. Gateway A signals the gatekeeper. The gatekeeper processes the call and signals gateway B.
B. Gateway A signals the call agent. The call agent processes the call and signals gateway B.
C. Fax F signals Fax J directly. Call setup is handled by the fax machines.
D. Gateway A processes the call and signals gateway B. Gateway B processes the request.
E. Gateway A processes the call and signals gateway B. Gateway B processes the call. During the setup, the gateways query the gatekeeper for address resolution and call setup permission.
Correct Answer: E Section: (none) Explanation
Explanation/Reference:
QUESTION 16
Which four of the following are Cisco-supported IP telephony deployment models? (Choose 4)
A. Single site
B. Single site with distributed call processing
C. Multisite with centralized call processing
D. Clustering over the IP WAN
E. Multisite with distributed call processing
Correct Answer: ACDE Section: (none) Explanation
Explanation/Reference:
QUESTION 17
You are a network engineer at PASSGUIDE.com, study the exhibit carefully. Three PASSGUIDE department managers share the directory number 3000 The Marketing manager’s phone is attached to port 1/1 The Engineering manager’s phone is attached to port 1/2 The Shipping manager’s phone is attached to port 1/3 In which situation would an incoming call ring on the Shipping manager’s phone?
PassGuide.com-Make You Succeed To Pass IT Exams PassGuide 642-436
A. The Marketing manager is on the phone.
B. None of the managers are on the phone.
C. The Engineering manager is on the phone.
D. The Shipping manager and Marketing manager are on the phone.
E. The Engineering manager and Marketing manager are on the phone.
Correct Answer: E Section: (none) Explanation
Explanation/Reference:
QUESTION 18
Identify two gateway supplementary services. (Choose 2)
A. Hold
B. Transcoding
C. Transfer
D. DTMF relay
Correct Answer: AC Section: (none) Explanation
Explanation/Reference:
QUESTION 19
According to the G.114 recommendation, the maximum one-way delay for voice should ideally not exceed how much delay?
A. 200 ms
B. 150 ms
C. 250 ms
D. 100 ms PassGuide.com-Make You Succeed To Pass IT Exams PassGuide 642-436
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 20
On the basis of the related knowledge, at which point does the MGCP call agent release the setup of the call path to the residential gateways?
A. Does not release call path setup
B. After the call agent has been notified that an event occurred at the source residential gateway
C. After the call agent has been notified of an event and has instructed the source residential gateway to create a connection
D. After the call agent has sent a connection request to both the source and destination and has relayed a modify-connection request to the source so that the source and destination can set up the call path
Correct Answer: D Section: (none) Explanation Explanation/Reference:
QUESTION 21
Identify the preferred voice quality measurement approach for VoIP networks.
A. QRT
B. PESQ
C. PSQM
D. MOS
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 22
Which method of fax relay uses a store-and-forward approach?
A. T.38
B. T.37
C. Cisco Fax Relay
D. T.30
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 23
When using CUBE, which two statements describe how media flow-through differs from media flow-
around? (Choose two.)
Select 2 response(s).
A. Media flow-around provides address hiding by terminating both signaling and RTP streams.
B. Media flow-through terminates the signaling channel and the RTP streams flow directly between endpoints.
C. Media flow-around and media flow-through function in a similar manner, but media flow-around supports NAT traversal.
D. Media flow-through terminates the RTP streams but allows signaling to flow directly between endpoints.
E. Media flow-around terminates the signaling stream and allows RTP streams to flow directly between endpoints. PassGuide.com-Make You Succeed To Pass IT Exams PassGuide 642-436
F. Media flow-through provides address hiding by terminating both signaling and RTP streams.
Correct Answer: EF Section: (none) Explanation
Explanation/Reference:
QUESTION 24
What codec is required for fax pass-through and/or modem pass-through?
A. G.711
B. G.729ab
C. G.723
D. G.729
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 25
Identify three quality issues that can result because of a lack of network bandwidth.(Choose 3)
A. Jitter
B. Impedance
C. Delay
D. Packet loss
Correct Answer: ACD Section: (none) Explanation
Explanation/Reference:
QUESTION 26
What protocol is used to communicate between a DSP farm configured on an IOS router and a Cisco Unified Communications Manager server?
A. SIP
B. H.323
C. MGCP
D. SCCP
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 27
Using Cisco Unified Communications Manager Express, what four steps are necessary to implement COR? (Choose four.)
PassGuide.com-Make You Succeed To Pass IT Exams PassGuide 642-436
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 28
What is the Layer 2 overhead (in bytes) for Frame Relay traffic?
A. 5 bytes
B. 18 bytes
C. 6 bytes
D. 3 bytes
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 29
As a PASSGUIDE network technician ,you are responsible for establishing and maintaining VoIP network. You have configured a gatekeeper and an IP-IP gateway on the same router. When you examine the output from the show gatekeeper endpoint command, the IP-IP gateway is not registered with the gatekeeper. What needs to be configured to resolve this issue?
PassGuide.com-Make You Succeed To Pass IT Exams PassGuide 642-436
A. The h323-gateway voip id command has an incorrect IP address.
B. You need to add a VoIP dial peer to the configuration.
C. You need to stop and restart the gateway.
D. The h323-gateway voip id command has an incorrect gatekeeper ID and IP address.
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 30
Which three factors must be considered when calculating the total bandwidth of a VoIP call? (Choose 3)
A. Codec size
B. CRC usage
C. Data-link overhead
D. Sample size
Correct Answer: ACD Section: (none) Explanation
Explanation/Reference:
QUESTION 31
Observe the following options, which process changes an internal extension into a fully qualified external PSTN number before matching to a dial peer?
A. forward digits
B. prefix extension
C. number expansion PassGuide.com-Make You Succeed To Pass IT Exams PassGuide 642-436
D. digit masking
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
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