Category: 3COM
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Exam A
QUESTION 1
Which file system command displays the directory entries on a 3Com switch?
A. dir /all
B. cd dir /all
C. display dir
D. display dir /all
E. dir display /all
F. mkdir display /all
Correct Answer: A
QUESTION 2
What is the purpose of the RIP View command network network_address?
A. Enables RIP on all switches with this network address
B. Enables RIP on the switch that is configured with this IP address
C. Displays all RIP routes associated with this network address or with a subnet of this address
D. Enables RIP on all interfaces that are configured with this network address or with a subnet of this address
Correct Answer: D
QUESTION 3
Which two are Super-VLAN configuration requirements/limitations on the Switch 8800? (Choose two.)
A. Up to 64 ports can be assigned to a Super-VLAN
B. Up to 64 Sub-VLANs can be assigned to a Super-VLAN
C. ARP, VRRP and DHCP are not supported on Super-VLANs
D. Sub-VLANs terminate at a router and are isolated at Layer 3
E. Super-VLANs are assigned an IP address; Sub-VLANs may not be assigned an IP address
Correct Answer: BE
QUESTION 4
Which Switch 5500 model(s) does not support Distributed Resilient Routing (DRR)?
A. Switch 5500-EI
B. Switch 5500-SI
C. Switch 5500G-EI
D. All of the above
Correct Answer: B
QUESTION 5
What is the result of the command boot boot-loader file-url?
A. Reboots the switch using the file-url for the operational code
B. Updates the switch BootROM with the file-url on the system flash
C. Reboots the switch fabric only using the file-url for the operational code
D. Specifies the switch to use file-url for the operational code on the next boot
Correct Answer: D
QUESTION 6
Click on the exhibit button.
Which Switch 7700 command shows all the hardware and software information on the modules (review the output shown in the exhibit)?
A. [SW7700] display device
B. [SW7700] display version
C. [SW7700] display interfaces
D. [SW7700] display current-configuration
Correct Answer: B QUESTION 7
Click on the exhibit button.
What can be determined from the output of the display ip routing-table (based on the IP routing-table information shown in the exhibit)?
A. The default route is 200.0.0.1
B. Switch interface 1.0.0.2 is connected to network 1.0.0.0/24
C. VLAN-interface3 has two IP networks configured on the single switch
D. The most desired paths for forwarding packets are IP network 25.0.0.0 and 30.0.0.0
Correct Answer: B
QUESTION 8
Which two methods can be used for day-to-day copying of switch configuration and software files on the Switch 5500/7700/8800? (Choose two.)
A. USB port with a flash drive
B. File Transfer Protocol (FTP)
C. Trivial File Transfer Protocol (TFTP)
D. Simple Network Management Protocol (SNMP)
Correct Answer: BC
QUESTION 9
Which Switch 5500 command would display the status of the front panel Ethernet port #13 on switch unit #2?
A. [ 5500-EI ] display interface e 2/13
B. [ 5500-EI ] display interface e 2/0/13
C. [ 5500-EI ] display interface e 2/1/13
D. [ 5500-EI ] display interface e 13/0/2
Correct Answer: B
QUESTION 10
What is the reason to connect the p port on the bottom Switch 5500 in the stack to the down port of the top Switch 5500 in the same stack?
A. Reliability – creates a resilient topology
B. Security – prevents an unauthorized user from connecting to the switch stack
C. Performance – creates the 48-Gbps eXpandable Resilient Networking (XRN) Fabric
D. Management – enables Distributed Resilient Routing (DRR) on the Switch 5500-SI
Correct Answer: A QUESTION 11
Click on the exhibit button.
Why is it important to enable Interface Tracking for VRRP routers (based on the VRRP diagram shown in the exhibit)?
A. If a link failure occurs, the path to the virtual gateway will be blocked
B. If a link failure occurs, it takes longer for the VRRP routers to reconfigure the virtual gateway path
C. If a link failure occurs, the master router can configure a new physical link to the virtual gateway
D. If a link failure occurs, a less efficient network path may be used to forward packets to the Internet or connectivity to the Internet may be lost altogether
Correct Answer: D QUESTION 12
Click on the exhibit button.
How many OSPF areas are configured on the Switch 8800 (Router ID 1.1.1.1) (based on the set of OSPF commands and diagram shown in the exhibit)?
A. None
B. One
C. Two
D. Three
Correct Answer: C QUESTION 13
Click on the exhibit button.
Which IP static route command would configure Switch A with a path to Host C (based on the network diagram shown in the exhibit)?
A. [Switch A]ip route-static 1.1.3.0 255.255.255.0 1.1.1.2
B. [Switch A]ip route-static 1.1.3.2 255.255.255.0 1.1.2.2
C. [Switch A]ip route-static 1.1.4.0 255.255.255.0 1.1.2.2
D. [Switch A]ip route-static 1.1.5.0 255.255.255.0 1.1.2.2
Correct Answer: D QUESTION 14
What does a slow (once per second) flashing RUN LED indicate on the Switch 7700 Fabric I/O module?
A. The fabric module is faulty
B. The fabric module is running normally
C. The fabric module is faulty or out of position
D. The fabric module is booting or has not registered successfully
Correct Answer: B QUESTION 15
What is the result of configuring a switch port that permits traffic from all Virtual LANs (VLANs), i.e., configured as a Trunk Port?
A. All VLANs will be tagged
B. All VLANs will be untagged
C. VLAN 1 will be tagged; all other VLANs will be untagged
D. VLAN 1 will be untagged; all other VLANs will be tagged
Correct Answer: D QUESTION 16
Which two multicast protocols cannot be enabled on the Switch 5500/7700/8800, if IGMP snooping is enabled on the VLAN interface? (Choose two.)
A. IGMP
B. PIM-DM/PIM-SM
C. Reverse Path Forwarding (RPF)
D. Multicast Source Discovery Protocol (MSDP)
E. Distance Vector Multicast Routing Protocol (DVMRP)
Correct Answer: AB QUESTION 17
How do you configure Ethernet ports on the Switch 5500/7700/8800 families?
A. Use the thernet command to enter the Ethernet Port View
B. Use the Portview command to enter the Ethernet Port View
C. Use the Interface command to enter the Ethernet Port View
D. Use the Configure command to enter the Ethernet Port View
Correct Answer: C QUESTION 18
How would you stop a specific port interface, which has no router attached, from sending and receiving RIP updates?
A. From the interface view, issue the ndo network command
B. From the interface view, issue the ndo rip work command
C. From the interface view, issue the ndo rip input command
D. From the interface view, issue the ndo rip output command
Correct Answer: B QUESTION 19
You have already configured and enabled individual switch ports for IEEE 802.1X Network Login. What is required for authentication to be activated on the ports?
A. From the System View, enable 802.1X Network Login
B. From the Ethernet Port View, set the port access control mode
C. From the System View, configure the authentication method for 802.1X users
D. From the Ethernet Port View, configure the authentication method, i.e., chap, pap, eap, etc.
Correct Answer: A
QUESTION 20
Protocol Independent Multicast – Sparse Mode (PIM-SM) only delivers multicast traffic to network segments with active receivers that have explicitly requested the data.
A. True
B. False
Correct Answer: A
QUESTION 21
Which best defines the mechanism of IEEE 802.1X Network Login?
A. An authenticator requests access to network services; the authentication server enforces authentication before allowing access to the network and validates the supplicant on behalf of the authenticator
B. A supplicant requests access to network services; the authenticator enforces authentication before allowing access to the network; the authentication server validates the supplicant on behalf of the authenticator
C. A supplicant requests access to network services; the authentication server enforces authentication before allowing access to the network; the authenticator validates the supplicant on behalf of the authentication server
Correct Answer: B
QUESTION 22
How would you configure the Switch 5500/7700/8000 to ensure DHCP clients can communicate with the DHCP server, regardless of which network the client and server reside on?
A. Configure the switch for UDP Helper
B. Configure the switch for DHCP Relay
C. Configure all the switches as DHCP servers
D. Configure both the DHCP master and DHCP slave
Correct Answer: B
QUESTION 23
Which best describes the result of the command 5500-EI-Ethernet1/0/1]traffic-priority inbound ip-group 3010 cos video where video is defined at priority 5 in the IEEE 8021.p priority table?
A. The Switch 5500 assigns a priority of 5 to all inbound packets
B. Ethernet port 1 on switch unit ID 1 assigns a priority of 5 to all inbound packets
C. The Switch 5500 assigns a priority of 5 to all outbound packets identified by ACL 3010
D. Ethernet port 1 on switch unit ID 1 assigns a priority of 5 to all inbound packets identified by ACL 3010
Correct Answer: D
QUESTION 24
You have previously configured a switch port as port link-type trunk. You now want the port to support packets without tagging from multiple VLANs with untagged packets?
A. Use the port link-type hybrid command
B. Use the port link-type access command
C. Use the port link-type access command followed by the port link-type trunk command
D. Use the port link-type access command followed by the port link-type hybrid command
Correct Answer: D QUESTION 25
Which three are properties of the OSPF Designated Router (DR)? (Choose three.)
A. It speaks for all of its adjacent routers in its area
B. All DRs on a network must have the same Router ID
C. The router with the lowest MAC address is elected DR
D. A router with a priority of zero will never become the DR
E. It is responsible for generating and flooding network link advertisements
Correct Answer: ADE QUESTION 26
Click on the exhibit button.
Which best describes the configuration of the voice VLAN on the switch (based on the information shown in the exhibit)?
A. The voice VLAN ID is 2; it has been enabled at both the System View and Port View; and all IP phones will automatically be added to the VLAN
B. The voice VLAN ID is 2; it has been enabled only at the System View; and 3Com and Cisco IP phones will automatically be added to the VLAN
C. The voice VLAN ID is 2; 3Com and Cisco IP phones will automatically be added to the VLAN 2; and the switch filters out all Ethernet frames in the Voice VLAN whose source MAC does not match the OUI
D. The voice VLAN ID is 2; it was automatically configured; 3Com and Cisco IP phones will be recognized by the switch; and the switch allows all Ethernet frames in the Voice VLAN that are not OUI-based frames
Correct Answer: C
QUESTION 27
What is the primary purpose for using Q-in-Q VLANs (on the Switch 7700/8800, it is referred to as VLAN-VPN)?
A. To provide a VLAN tunneling technique that is transparent to the Internet Service Provider (ISP)
B. To interconnect multiple VLANs to allow packets to be sent between the VLANs without the requirement of a router
C. To create QoS profiles that can be assigned to multiple VLANs vs. configuring each VLAN’s parameters individually
D. Enables a Service Provider to offer transport services that preserve and extend customers’ VLAN topology over a metropolitan-area network (MAN)
Correct Answer: D
QUESTION 28
Which three steps are required to configure and enable an ACL on the Switch 5500/7700/8800? (Choose three.)
A. Define the ACL
B. Create the ACL rules
C. Apply the ACL to the switch
D. Apply the ACL to an interface
E. Apply the user-defined flow template to the ACLs
Correct Answer: ABD
QUESTION 29
What is a key reason for using Multiple Spanning Tree Protocol (MSTP) vs.
Rapid Spanning Tree Protocol (RSTP) on a network with multiple VLANs?
A. MSTP supports fast-forwarding configuration on edge ports
B. MSTP supports load balancing Virtual LANs (VLANs) across multiple data paths
C. MSTP allows you to choose the root bridge so you can eliminate the need to use VLANs on a Layer 2 network
D. MSTP allows you to configure more than one switch to be the Primary Root for a Multiple Spanning Tree Instance (MSTI) to provide better resilience when VLANs are used
Correct Answer: B
QUESTION 30
Click on the exhibit button.
Which best describes the Switch 5500-EI Link Aggregation configuration (based on the output of the display link-aggregation verbose command shown in the exhibit)?
A. The LA group contains two links, the links were manually configured and load sharing has been turned off for the LA group
B. The LA group contains two links, the links were dynamically configured and load sharing has been turned on for the LA group
C. The LA group contains four links, the links were manually configured and load sharing has been turned on for the LA group
D. The LA group contains four links, the links were dynamically configured and load sharing has been turned off for the LA group
Correct Answer: B
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Exam A
QUESTION 1
The Switch 7700 or Switch 8800 can be used as the primary authentication service or as a backup if the RADIUS server group is unavailable.
A. True
B. False
Correct Answer: A
QUESTION 2
Which four are Switching Fabric features/Functions on the Switch 8800? (Choose four)
A. Each Switch Fabric has a data channel to every module
B. Supports a hot-swappable, load-balancing Switch Fabric.
C. There is a data channel between the two Switch Fabrics.
D. Each Switch Fabric has a management channel to every module
E. Supports a hot-standby, hot-swappable redundant Switch Fabric
F. The master Switch Fabric is always set to slot #1 unless the fabric in slot #1 fails
G. The master Switch Fabric provides route calculation and management for the entire chassis
Correct Answer: ABCE
QUESTION 3
What is the maximum number of Linux Aggregation load-balancing groups supported on the Switch 7700?
A. 4 groups
B. 13 groups
C. 24 groups
D. 64 groups
E. 128 groups
Correct Answer: D
QUESTION 4
Which three are Quality of Service (QoS) features/functions on the Switch 8800? (Choose three)
A. Has eight output queues per port
B. Supports Differentiated Services (DiffServ)prioritization
C. Uses a Randam Early Detection (RED) queue prioritization
D. Uses a Weihted Random Early Detection (WRED) queue prioritization
E. Can configure the priority queues “globally” across all I/O interfaces on a switch
F. Uses Resource Reservation Protocol (RSVP) to allocate bandwidth for high-priority applications
Correct Answer: ABD
QUESTION 5
Which two rules must be followed when configuring Link Aggregation groups on the Switch 7700 1000BASE-T and 1000BASE-X modules? (Chosse two)
A. The Linux Aggregation group can start on any port.
B. All the ports in a Link Aggregation group must be consecutive
C. A single Link Aggregation group can span multiple Interface Modules
D. A maximum of eight ports can belong to a single Link Aggregation group
E. A maximum of twelve ports can belong to a single Link Aggregation roup
Correct Answer: AB
QUESTION 6
Exhibit:
Which three Ethernet modes are supported on the Switch 7700 8-port 1000BASE-T(3c16859)Interface
Module? (Choose three)
A. 10 Mbps in full duplex only
B. 10 Mbps in half/full duplex mode
C. 100 Mbps in full duplex mode only
D. 100 Mbps in half/full duplex mode
E. 1000 Mbps in full duplex mode only
F. 1000 Mbps in half/full duplex mode
Correct Answer: BDE
QUESTION 7
Which two are functions of Switch 40×0 Family Multinetting? (Choose two)
A. Automatically assigns multiple VLANs on each router interface
B. Floods traffic from different subnets on the same broadcast domain
C. Enables configuration of multiple router interfaces for each VLan/broadcast domain
D. Enables multiple VLANs/broadcast domains to be configured for each router interface
Correct Answer: BC
QUESTION 8
What is the benefit of using the Switch 40×0 Family’s Spanning Tree Ignore/Disable feature?
A. Prevents disassociation of Layer 2 traffic from Layer 3 traffic.
B. Enables use of a routing protocol at Layer 2 to make forwarding decisions
C. Enables use of spanning Tree Protocol (STP) at Layer 3 to prevent loops in the network
D. Supports use of routing paths at Layer 3, while Spanning Tree Protocol (STP) manages Layer 2 switched links
Correct Answer: D
QUESTION 9
Which three are security-design features that can be employed in enterprise networks to improve security? (Choose three)
A. Enable IEEE 802 d link aggregation
B. Turn off IGMP snooping on all access-layer switches
C. Provide security for active devices using local or RADIUS authentication
D. Support IEEE 802.1X Network Login for authentication and authorization
E. Provide separate VLANs for management and wireless users with a VLAN-centric design
F. Employee TCP Windowing and or IEEE802.3X Flow Control to minimize effects of network attacks
Correct Answer: CDE
QUESTION 10
Which three are key requirements for the Access Layer (edge) of the network? (Choose three)
A. Multilayer traffic prioritization
B. Multiple priority queues per port
C. Hardware-based Access Control List (ACLs)
D. Rate limiting and remarking for outgoing traffic.
E. MAC address authorization or IEEE 802.1X Network Login
F. Resource Reservation Protocol (RSVP) bandwidth allocation
Correct Answer: ABE
QUESTION 11
Which three are true statements regarding 10 Gigabit technology and/or 3Com products? (Choose three)
A. The 3 Com XFP 10G Fiber Transceivers use LC connects
B. IEEE 802.3X defines the 10GBASE-CX4 standard for Twin axial
C. 3Com supports 10G interface Modules for both the Switch 7700 and Switch 8800
D. The 10GBASE-T standard requires four-pair Category 5 or two-pair Category 6 UTP wiring
Correct Answer: ABC
QUESTION 12
Which three are recommended guidelines for an XRN network? (Choose three)
A. Only enable Rapid Spanning Tree Protocol (RSTP) or Spanning Tree Protocol (STP) on edge switches
B. Do not insert Fabric interconnect Modules into the Super Stack 3 Switch 4900 or Switch 40×0 switches
C. Run the same version of the Gigabit Multilayer Switching (MS) Software (4Xor higher) across the fabric
D. Use fault-tolerant 3Comhardware, i.e the Switch 40×0 family that provides additional levels of hardware fault tolerance
E. The XRN Fabric Modules should be installed while the fabric switch powered on. Hot swapping XRN Fabric Modules is also recommended in the event of a failure
Correct Answer: BCD
QUESTION 13
Which three are benefits/features of the 3Com XRN technology? (Choose three)
A. Ensure continuous network availability
B. Supports enhanced network performance
C. Can be created using any IP-based switch
D. Create a path for future-proofing the network
E. Eliminates the need for hardware redundancy to achieve maximum network resiliency
Correct Answer: ABD
QUESTION 14
Which three components are required to create a local XRN solution (excluding the appropriate 3Com switches? (Choose three)
A. 3Com Network Supervisor
B. XRN Fabric interconnect Modules
C. High-Bandwidth interconnect Cable
D. Gigabit Multilayer Switching Software V3.x
E. Gigabit Ethernet Layer switching modules
Correct Answer: BCD
QUESTION 15
Which three are advantages of using 3Com’s XRN Distribution Resilient Routing (DRR) over Virtual Router Redundancy Protocol (VRRP)? (Choose three)
A. DRR is easy to configure and administer, VRRP is more complex to manage
B. DRR supports both IP unicast and IP multicast traffic, VRRP only supports IP unicast routing C. DRR fast failover is less than five seconds, VRRP fast failover can take as long as 60 seconds
D. DRR distributes routing table updates only, VRRP distributes the entire routing table to update other devices
E. DRR distributes routing across all switches in the XRN Distributed Fabric on the router interfaces, VRRP uses a single Master router for all routing
Correct Answer: ABE
QUESTION 16
Which component of XRN technology is defined as “A set of interconnected switches that support Distributed Device Management (DDM), Distributed Link Aggregation (DLA) and Distributed Resilient Routing (DRR)”?
A. XRN Interconnect
B. XRN Distributed Fabric
C. XRN Interconnect Fabric
D. XRN Distributed Software
Correct Answer: B
QUESTION 17
Which Switch 7700 command would show if Port#4 on Ethernet Module #2 is a member of a Link Aggregation (LA) group and is the “LA Master Port”?
A. display interface Ethernet 2/4
B. display interface Ethernet 2/04
C. display interface Ethernet 4/0/2
D. display link-aggregation Ethernet 2/4
E. display link-aggregation Ethernet 2/0/4
F. display link-aggregation Ethernet 4/0/2
Correct Answer: B
QUESTION 18
Which two should you verify on either the Switch 7700 or the Switch 8800 if the network is experiencing an Open Shortest Path First (OSPF) problem? (Choose two)
A. OSPF is enabled on all switch ports
B. VRRP is properly configured on the switch ports supporting OSPF
C. The Link State Database is the same for all routers in an OSPF area
D. The switch is sending/receiving OSPF Hello packets and Link State updates
Correct Answer: CD
QUESTION 19
Which command shows the Quality of Service (QoS) settings for interface Modules #2 Ethernet port #6 on the Switch 7700?
A. display qos Ethernet 6/2 all
B. display qos Ethernet 2/0/6 all
C. display qos-interface Ethernet 2/0/6 all
D. display qos-interface Ethernet 6/0/2 all
Correct Answer: C
QUESTION 20
Which two should be verified on either the Switch 7700 or the Switch 8800 when the network is experiences a RIP problem? (Choose two)
A. Check if BP is enabled on the switches using RIP
B. Check if the RIP versions are the same on the router interfaces
C. Use the “display RIP-statistics” command to check all RIP routes on the switch
D. Use the “display RIP packet” command to check if the switch is sending/receiving RIP updates
E. Use the “debugging RIP packet” command to check if the switch is sending/receiving RIP updates
Correct Answer: BE QUESTION 21
The Switch 7700 automatically saves the system configuration to its flash memory.
A. True
B. False
Correct Answer: B QUESTION 22
Which Access Control list modes are supported on both the Switch 7700 and the Switch 8800?
A. IP and Link based
B. IP and Port based
C. MAC and Link based
D. Link and Port based
Correct Answer: A QUESTION 23
The 3Com NBX IP Telephony Systems use multicast routing for operations such as conference calls, Music-on-Hold and paging.
A. True
B. False
Correct Answer: A QUESTION 24
Which command displays the system configuration stored in the Switch 7700 flash memory?
A. display flash
B. display configuration
C. display saved-configuration
D. display current-configuration
Correct Answer: C QUESTION 25
Which two procedures should a network administrator implement to assist in identifying the cause of a network incident or problem?(Choose two)
A. Document the existing network configuration
B. Install network sniffer throughout the network
C. Download all router and Layer 3 switch tables
D. Gather appropriate sniffer traces for the problem
E. Dump the pertinent statistics from all affected network devices Correct Answer: DE
QUESTION 26
Which two are Access Control List match order parameters for both the Switch 7700 and the Switch 8800? (Choose two)
A. Null-no match
B. Config – first match
C. All – longest match
D. Exact – identical match
Correct Answer: BD
QUESTION 27
Which two are useful in determining the source of a network broadcast storm? (Choose two)
A. Check all the router tables on the network
B. Check RX broadcast count in port statistics
C. Check TX broadcast count on port statistics
D. Place a network sniffer anywhere on the network
E. Use the “display igmp” command to check VLAN assignment
Correct Answer: BD
QUESTION 28
Which two are traffic prioritization features of the SuperStack 3 Switch 4900 Family? (Choose two)
A. Queues can be manipulated
B. By default, there is a single queue per port
C. Logical queues are classified based on latency
D. Traffic prioritization is based on IEEE 802.1 Q tag information
E. All models support four queues per port, two physical and two loical
Correct Answer: BE
QUESTION 29
Which four are Link Aggregation features/functions of the SuperStak 3 Switch 4900 Family? (Choose four)
A. Supports the IEEE 802.3ad standard
B. Aggregated Links can be of different speeds
C. Aggregated Links participate in Resilient Link pairs
D. Configuration rules are 15 groups of up to four ports each
E. With mixed-speed Aggregated Links, traffic is sent via the hiher-speed links only
F. Resilient Aggregated Links are implemented using Rapid Spanning Tree Protocol (RSTP)
G. Trunk Control Message Protocol (TCMP) must be enabled when connecting to the SuperStak 3 Switch 9300 or Switch 3900
Correct Answer: CDEF
QUESTION 30
Which SuperStake 3 Switch 4900 model can concurrently support Gigabit Ethernet over UTP wiring, multimode fiber, single-mode fiber and long haul cabling without the addition of an expansion module?
A. SuperStake 3 Switch 4900
B. SuperStake 3 Switch 4900 SX
C. SuperStake 3 Switch 4924
D. SuperStake 3 Switch 4950
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QUESTION 1
The Switch 7700 or Switch 8800 can be used as the primary authentication service or as a backup if the RADIUS server group is unavailable.
A. True
B. False
Correct Answer: A
QUESTION 2
Which four are Switching Fabric features/Functions on the Switch 8800? (Choose four)
A. Each Switch Fabric has a data channel to every module
B. Supports a hot-swappable, load-balancing Switch Fabric.
C. There is a data channel between the two Switch Fabrics.
D. Each Switch Fabric has a management channel to every module
E. Supports a hot-standby, hot-swappable redundant Switch Fabric
F. The master Switch Fabric is always set to slot #1 unless the fabric in slot #1 fails
G. The master Switch Fabric provides route calculation and management for the entire chassis
Correct Answer: ABCE
QUESTION 3
What is the maximum number of Linux Aggregation load-balancing groups supported on the Switch 7700?
A. 4 groups
B. 13 groups
C. 24 groups
D. 64 groups
E. 128 groups
Correct Answer: D
QUESTION 4
Which three are Quality of Service (QoS) features/functions on the Switch 8800? (Choose three)
A. Has eight output queues per port
B. Supports Differentiated Services (DiffServ)prioritization
C. Uses a Randam Early Detection (RED) queue prioritization
D. Uses a Weihted Random Early Detection (WRED) queue prioritization
E. Can configure the priority queues “globally” across all I/O interfaces on a switch
F. Uses Resource Reservation Protocol (RSVP) to allocate bandwidth for high-priority applications
Correct Answer: ABD
QUESTION 5
Which two rules must be followed when configuring Link Aggregation groups on the Switch 7700 1000BASE-T and 1000BASE-X modules? (Chosse two)
A. The Linux Aggregation group can start on any port.
B. All the ports in a Link Aggregation group must be consecutive
C. A single Link Aggregation group can span multiple Interface Modules
D. A maximum of eight ports can belong to a single Link Aggregation group
E. A maximum of twelve ports can belong to a single Link Aggregation roup
Correct Answer: AB
QUESTION 6
Exhibit:
Which three Ethernet modes are supported on the Switch 7700 8-port 1000BASE-T(3c16859)Interface
Module? (Choose three)
A. 10 Mbps in full duplex only
B. 10 Mbps in half/full duplex mode
C. 100 Mbps in full duplex mode only
D. 100 Mbps in half/full duplex mode
E. 1000 Mbps in full duplex mode only
F. 1000 Mbps in half/full duplex mode
Correct Answer: BDE
QUESTION 7
Which two are functions of Switch 40×0 Family Multinetting? (Choose two)
A. Automatically assigns multiple VLANs on each router interface
B. Floods traffic from different subnets on the same broadcast domain
C. Enables configuration of multiple router interfaces for each VLan/broadcast domain
D. Enables multiple VLANs/broadcast domains to be configured for each router interface
Correct Answer: BC
QUESTION 8
What is the benefit of using the Switch 40×0 Family’s Spanning Tree Ignore/Disable feature?
A. Prevents disassociation of Layer 2 traffic from Layer 3 traffic.
B. Enables use of a routing protocol at Layer 2 to make forwarding decisions
C. Enables use of spanning Tree Protocol (STP) at Layer 3 to prevent loops in the network
D. Supports use of routing paths at Layer 3, while Spanning Tree Protocol (STP) manages Layer 2 switched links
Correct Answer: D
QUESTION 9
Which three are security-design features that can be employed in enterprise networks to improve security? (Choose three)
A. Enable IEEE 802 d link aggregation
B. Turn off IGMP snooping on all access-layer switches
C. Provide security for active devices using local or RADIUS authentication
D. Support IEEE 802.1X Network Login for authentication and authorization
E. Provide separate VLANs for management and wireless users with a VLAN-centric design
F. Employee TCP Windowing and or IEEE802.3X Flow Control to minimize effects of network attacks
Correct Answer: CDE
QUESTION 10
Which three are key requirements for the Access Layer (edge) of the network? (Choose three)
A. Multilayer traffic prioritization
B. Multiple priority queues per port
C. Hardware-based Access Control List (ACLs)
D. Rate limiting and remarking for outgoing traffic.
E. MAC address authorization or IEEE 802.1X Network Login
F. Resource Reservation Protocol (RSVP) bandwidth allocation
Correct Answer: ABE
QUESTION 11
Which three are true statements regarding 10 Gigabit technology and/or 3Com products? (Choose three)
A. The 3 Com XFP 10G Fiber Transceivers use LC connects
B. IEEE 802.3X defines the 10GBASE-CX4 standard for Twin axial
C. 3Com supports 10G interface Modules for both the Switch 7700 and Switch 8800
D. The 10GBASE-T standard requires four-pair Category 5 or two-pair Category 6 UTP wiring
Correct Answer: ABC
QUESTION 12
Which three are recommended guidelines for an XRN network? (Choose three)
A. Only enable Rapid Spanning Tree Protocol (RSTP) or Spanning Tree Protocol (STP) on edge switches
B. Do not insert Fabric interconnect Modules into the Super Stack 3 Switch 4900 or Switch 40×0 switches
C. Run the same version of the Gigabit Multilayer Switching (MS) Software (4Xor higher) across the fabric
D. Use fault-tolerant 3Comhardware, i.e the Switch 40×0 family that provides additional levels of hardware fault tolerance
E. The XRN Fabric Modules should be installed while the fabric switch powered on. Hot swapping XRN Fabric Modules is also recommended in the event of a failure
Correct Answer: BCD
QUESTION 13
Which three are benefits/features of the 3Com XRN technology? (Choose three)
A. Ensure continuous network availability
B. Supports enhanced network performance
C. Can be created using any IP-based switch
D. Create a path for future-proofing the network
E. Eliminates the need for hardware redundancy to achieve maximum network resiliency
Correct Answer: ABD
QUESTION 14
Which three components are required to create a local XRN solution (excluding the appropriate 3Com switches? (Choose three)
A. 3Com Network Supervisor
B. XRN Fabric interconnect Modules
C. High-Bandwidth interconnect Cable
D. Gigabit Multilayer Switching Software V3.x
E. Gigabit Ethernet Layer switching modules
Correct Answer: BCD
QUESTION 15
Which three are advantages of using 3Com’s XRN Distribution Resilient Routing (DRR) over Virtual Router Redundancy Protocol (VRRP)? (Choose three)
A. DRR is easy to configure and administer, VRRP is more complex to manage
B. DRR supports both IP unicast and IP multicast traffic, VRRP only supports IP unicast routing C. DRR fast failover is less than five seconds, VRRP fast failover can take as long as 60 seconds
D. DRR distributes routing table updates only, VRRP distributes the entire routing table to update other devices
E. DRR distributes routing across all switches in the XRN Distributed Fabric on the router interfaces, VRRP uses a single Master router for all routing
Correct Answer: ABE
QUESTION 16
Which component of XRN technology is defined as “A set of interconnected switches that support Distributed Device Management (DDM), Distributed Link Aggregation (DLA) and Distributed Resilient Routing (DRR)”?
A. XRN Interconnect
B. XRN Distributed Fabric
C. XRN Interconnect Fabric
D. XRN Distributed Software
Correct Answer: B
QUESTION 17
Which Switch 7700 command would show if Port#4 on Ethernet Module #2 is a member of a Link Aggregation (LA) group and is the “LA Master Port”?
A. display interface Ethernet 2/4
B. display interface Ethernet 2/04
C. display interface Ethernet 4/0/2
D. display link-aggregation Ethernet 2/4
E. display link-aggregation Ethernet 2/0/4
F. display link-aggregation Ethernet 4/0/2
Correct Answer: B
QUESTION 18
Which two should you verify on either the Switch 7700 or the Switch 8800 if the network is experiencing an Open Shortest Path First (OSPF) problem? (Choose two)
A. OSPF is enabled on all switch ports
B. VRRP is properly configured on the switch ports supporting OSPF
C. The Link State Database is the same for all routers in an OSPF area
D. The switch is sending/receiving OSPF Hello packets and Link State updates
Correct Answer: CD
QUESTION 19
Which command shows the Quality of Service (QoS) settings for interface Modules #2 Ethernet port #6 on the Switch 7700?
A. display qos Ethernet 6/2 all
B. display qos Ethernet 2/0/6 all
C. display qos-interface Ethernet 2/0/6 all
D. display qos-interface Ethernet 6/0/2 all
Correct Answer: C
QUESTION 20
Which two should be verified on either the Switch 7700 or the Switch 8800 when the network is experiences a RIP problem? (Choose two)
A. Check if BP is enabled on the switches using RIP
B. Check if the RIP versions are the same on the router interfaces
C. Use the “display RIP-statistics” command to check all RIP routes on the switch
D. Use the “display RIP packet” command to check if the switch is sending/receiving RIP updates
E. Use the “debugging RIP packet” command to check if the switch is sending/receiving RIP updates
Correct Answer: BE QUESTION 21
The Switch 7700 automatically saves the system configuration to its flash memory.
A. True
B. False
Correct Answer: B QUESTION 22
Which Access Control list modes are supported on both the Switch 7700 and the Switch 8800?
A. IP and Link based
B. IP and Port based
C. MAC and Link based
D. Link and Port based
Correct Answer: A QUESTION 23
The 3Com NBX IP Telephony Systems use multicast routing for operations such as conference calls, Music-on-Hold and paging.
A. True
B. False
Correct Answer: A QUESTION 24
Which command displays the system configuration stored in the Switch 7700 flash memory?
A. display flash
B. display configuration
C. display saved-configuration
D. display current-configuration
Correct Answer: C QUESTION 25
Which two procedures should a network administrator implement to assist in identifying the cause of a network incident or problem?(Choose two)
A. Document the existing network configuration
B. Install network sniffer throughout the network
C. Download all router and Layer 3 switch tables
D. Gather appropriate sniffer traces for the problem
E. Dump the pertinent statistics from all affected network devices Correct Answer: DE
QUESTION 26
Which two are Access Control List match order parameters for both the Switch 7700 and the Switch 8800? (Choose two)
A. Null-no match
B. Config – first match
C. All – longest match
D. Exact – identical match
Correct Answer: BD
QUESTION 27
Which two are useful in determining the source of a network broadcast storm? (Choose two)
A. Check all the router tables on the network
B. Check RX broadcast count in port statistics
C. Check TX broadcast count on port statistics
D. Place a network sniffer anywhere on the network
E. Use the “display igmp” command to check VLAN assignment
Correct Answer: BD
QUESTION 28
Which two are traffic prioritization features of the SuperStack 3 Switch 4900 Family? (Choose two)
A. Queues can be manipulated
B. By default, there is a single queue per port
C. Logical queues are classified based on latency
D. Traffic prioritization is based on IEEE 802.1 Q tag information
E. All models support four queues per port, two physical and two loical
Correct Answer: BE
QUESTION 29
Which four are Link Aggregation features/functions of the SuperStak 3 Switch 4900 Family? (Choose four)
A. Supports the IEEE 802.3ad standard
B. Aggregated Links can be of different speeds
C. Aggregated Links participate in Resilient Link pairs
D. Configuration rules are 15 groups of up to four ports each
E. With mixed-speed Aggregated Links, traffic is sent via the hiher-speed links only
F. Resilient Aggregated Links are implemented using Rapid Spanning Tree Protocol (RSTP)
G. Trunk Control Message Protocol (TCMP) must be enabled when connecting to the SuperStak 3 Switch 9300 or Switch 3900
Correct Answer: CDEF
QUESTION 30
Which SuperStake 3 Switch 4900 model can concurrently support Gigabit Ethernet over UTP wiring, multimode fiber, single-mode fiber and long haul cabling without the addition of an expansion module?
A. SuperStake 3 Switch 4900
B. SuperStake 3 Switch 4900 SX
C. SuperStake 3 Switch 4924
D. SuperStake 3 Switch 4950
Correct Answer: D
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