Network Access Flashcards
Based on the network shown in the graphic. Which option contains both the potential networking problem and the protocol or setting that should be used to prevent the problem?
A. routing loops, hold down timers
B. switching loops, split horizon
C. routing loops, split horizon
D. switching loops, VTP
E. routing loops, STP
F. switching loops, STP
Based on the network shown in the graphic. Which option contains both the potential networking problem and the protocol or setting that should be used to prevent the problem?
A. routing loops, hold down timers
B. switching loops, split horizon
C. routing loops, split horizon
D. switching loops, VTP
E. routing loops, STP
F. switching loops, STP
Which command sequence can you enter to create VLAN 20 and assign it to an interface on a switch?
A. Switch( config)# vlan 20
Switch( config)# Interface gig x/ y
Switch( config-if)# switchport access vlan 20
B. Switch( config)# Interface gig x/ y
Switch( config-if)# vlan 20
Switch( config-vlan)# switchport access vlan 20
C. Switch( config)# vlan 20
Switch( config)# Interface vlan 20
Switch( config-if)# switchport trunk native vlan 20
D. Switch( config)# vlan 20
Switch( config)# Interface vlan 20
Switch( config-if)# switchport access vlan 20
E. Switch( config)# vlan 20
Switch( config)# Interface vlan 20
Switch( config-if)# switchport trunk allowed vlan 20
Which command sequence can you enter to create VLAN 20 and assign it to an interface on a switch?
A. Switch( config)# vlan 20
Switch( config)# Interface gig x/ y
Switch( config-if)# switchport access vlan 20
B. Switch( config)# Interface gig x/ y
Switch( config-if)# vlan 20
Switch( config-vlan)# switchport access vlan 20
C. Switch( config)# vlan 20
Switch( config)# Interface vlan 20
Switch( config-if)# switchport trunk native vlan 20
D. Switch( config)# vlan 20
Switch( config)# Interface vlan 20
Switch( config-if)# switchport access vlan 20
E. Switch( config)# vlan 20
Switch( config)# Interface vlan 20
Switch( config-if)# switchport trunk allowed vlan 20
Refer to the exhibit.
Host A can communicate with Host B but not with Hosts C or D. How can the network administrator solve this problem?
A. Configure Hosts C and D with IP addresses in the 192.168.2.0 network
B. Install a router and configure a route to route between VLANs 2 and 3.
C. Install a second switch and put Hosts C and D on that switch while Hosts A and B remain on the original switch. D. Enable the VLAN trunking protocol on the switch.
Refer to the exhibit.
Host A can communicate with Host B but not with Hosts C or D. How can the network administrator solve this problem?
A. Configure Hosts C and D with IP addresses in the 192.168.2.0 network
B. Install a router and configure a route to route between VLANs 2 and 3.
C. Install a second switch and put Hosts C and D on that switch while Hosts A and B remain on the original switch. D. Enable the VLAN trunking protocol on the switch.
Which technology can enable multiple VLANs to communicate with one another?
A. inter-VLAN routing using a Layer 3 switch
B. inter-VLAN routing using a Layer 2 switch
C. intra-VLAN routing using router on a stick
D. intra-VLAN routing using a Layer 3 switch
Which technology can enable multiple VLANs to communicate with one another?
A. inter-VLAN routing using a Layer 3 switch
B. inter-VLAN routing using a Layer 2 switch
C. intra-VLAN routing using router on a stick
D. intra-VLAN routing using a Layer 3 switch
Which command can you enter to view the ports that are assigned to VLAN 20?
A. Switch# show vlan id 20
B. Switch# show ip interface brief
C. Switch# show interface vlan 20
D. Switch# show ip interface vlan 20
Which command can you enter to view the ports that are assigned to VLAN 20?
A. Switch# show vlan id 20
B. Switch# show ip interface brief
C. Switch# show interface vlan 20
D. Switch# show ip interface vlan 20
Refer to the exhibit.
Which two statements are true about interVLAN routing in the topology that is shown in the exhibit? (Choose two).
A. The FastEthernet 0/ 0 interface on Router1 must be configured with subinterfaces.
B. The FastEthernet 0/ 0 interface on Router1 and Switch2 trunk ports must be configured using the same encapsulation type.
C. Router1 and Switch2 should be connected via a crossover cable.
D. Router1 needs more LAN interfaces to accommodate the VLANs that are shown in the exhibit.
E. Router1 will not play a role in communications between host A and host D.
F. Host E and host F use the same IP gateway address.
Refer to the exhibit.
Which two statements are true about interVLAN routing in the topology that is shown in the exhibit? (Choose two).
A. The FastEthernet 0/ 0 interface on Router1 must be configured with subinterfaces.
B. The FastEthernet 0/ 0 interface on Router1 and Switch2 trunk ports must be configured using the same encapsulation type.
C. Router1 and Switch2 should be connected via a crossover cable.
D. Router1 needs more LAN interfaces to accommodate the VLANs that are shown in the exhibit.
E. Router1 will not play a role in communications between host A and host D.
F. Host E and host F use the same IP gateway address.
A department decides to replace its hub with a Catalyst 2950 switch that is no longer needed by another department. To prepare the switch for installation, the network administrator has erased the startup configuration and reloaded the switch. However, PCs that are connected to the switch experience various connectivity problems. What is a possible cause of the problem?
A. The “mode” button was not pressed when the switch was reloaded.
B. The switch was not configured with an IP address or a default gateway.
C. The running configuration should have been erased. D. The management VLAN is disabled.
E. The VLAN database was not erased.
A department decides to replace its hub with a Catalyst 2950 switch that is no longer needed by another department. To prepare the switch for installation, the network administrator has erased the startup configuration and reloaded the switch. However, PCs that are connected to the switch experience various connectivity problems. What is a possible cause of the problem?
A. The “mode” button was not pressed when the switch was reloaded.
B. The switch was not configured with an IP address or a default gateway.
C. The running configuration should have been erased. D. The management VLAN is disabled.
E. The VLAN database was not erased.
Refer to the exhibit.
C-router is to be used as a “router-on-a-stick” to route between the VLANs. All the interfaces have been properly configured and IP routing is operational. The hosts in the VLANs have been configured with the appropriate default gateway. What can be said about this configuration?
A. No further routing configuration is required.
B. These commands need to be added to the configuration:
C-router( config)# router rip
C-router( config-router)# network 172.19.0.0
C. These commands need to be added to the configuration:
C-router( config)# router ospf 1
C-router( config-router)# network 172.19.0.0 0.0.3.255 area 0
D. These commands need to be added to the configuration:
C-router( config)# router eigrp 123
C-router( config-router)# network 172.19.0.0
Refer to the exhibit.
C-router is to be used as a “router-on-a-stick” to route between the VLANs. All the interfaces have been properly configured and IP routing is operational. The hosts in the VLANs have been configured with the appropriate default gateway. What can be said about this configuration?
A. No further routing configuration is required.
B. These commands need to be added to the configuration:
C-router( config)# router rip
C-router( config-router)# network 172.19.0.0
C. These commands need to be added to the configuration:
C-router( config)# router ospf 1
C-router( config-router)# network 172.19.0.0 0.0.3.255 area 0
D. These commands need to be added to the configuration:
C-router( config)# router eigrp 123
C-router( config-router)# network 172.19.0.0
A switch is configured with all ports assigned to vlan 2 with full duplex FastEthernet to segment existing departmental traffic. What is the effect of adding switch ports to a new VLAN on the switch?
A. An additional broadcast domain will be created.
B. More collision domains will be created.
C. IP address utilization will be more efficient.
D. More bandwidth will be required than was needed previously.
A switch is configured with all ports assigned to vlan 2 with full duplex FastEthernet to segment existing departmental traffic. What is the effect of adding switch ports to a new VLAN on the switch?
A. An additional broadcast domain will be created.
B. More collision domains will be created.
C. IP address utilization will be more efficient.
D. More bandwidth will be required than was needed previously.
What are three benefits of implementing VLANs? (Choose three).
A. A higher level of network security can be reached by separating sensitive data traffic from other network traffic.
B. Broadcast storms can be mitigated by increasing the number of broadcast domains, thus reducing their size. C. VLANs make it easier for IT staff to configure new logical groups, because the VLANs all belong to the same broadcast domain.
D. A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure.
E. Broadcast storms can be mitigated by decreasing the number of broadcast domains, thus increasing their size. F. A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure.
G. Port-based VLANs increase switch-port use efficiency, thanks to 802.1Q trunks.
What are three benefits of implementing VLANs? (Choose three).
A. A higher level of network security can be reached by separating sensitive data traffic from other network traffic.
B. Broadcast storms can be mitigated by increasing the number of broadcast domains, thus reducing their size. C. VLANs make it easier for IT staff to configure new logical groups, because the VLANs all belong to the same broadcast domain.
D. A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure.
E. Broadcast storms can be mitigated by decreasing the number of broadcast domains, thus increasing their size. **F. A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure. **
G. Port-based VLANs increase switch-port use efficiency, thanks to 802.1Q trunks.
VLAN 3 is not yet configured on your switch. What happens if you set the switchport access vlan 3 command in interface configuration mode?
A. The command is accepted and the respective VLAN is added to vlan.dat.
B. The command is rejected.
C. The port turns amber.
D. The command is accepted and you must configure the VLAN manually.
VLAN 3 is not yet configured on your switch. What happens if you set the switchport access vlan 3 command in interface configuration mode?
A. The command is accepted and the respective VLAN is added to vlan.dat.
B. The command is rejected.
C. The port turns amber.
D. The command is accepted and you must configure the VLAN manually.
A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the local network. How can you accomplish this task, using the fewest physical interfaces and without decreasing network performance?
A. Implement a router-on-a-stick configuration.
B. Use a hub to connect the four VLANS with a Fast Ethernet interface on the router.
C. Add a second router to handle the VLAN traffic.
D. Add two more Fast Ethernet interfaces.
A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the local network. How can you accomplish this task, using the fewest physical interfaces and without decreasing network performance?
A. Implement a router-on-a-stick configuration.
B. Use a hub to connect the four VLANS with a Fast Ethernet interface on the router.
C. Add a second router to handle the VLAN traffic.
D. Add two more Fast Ethernet interfaces.
Which three elements must be used when you configure a router interface for VLAN trunking? (Choose three).
A. One IP network or subnetwork for each subinterface. B. Subinterface encapsulation identifiers that match VLAN tags.
C. One physical interface for each subinterface.
D. Subinterface numbering that matches VLAN tags.
E. A management domain for each subinterface.
F. one subinterface per VLAN
Which three elements must be used when you configure a router interface for VLAN trunking? (Choose three).
A. One IP network or subnetwork for each subinterface.
B. Subinterface encapsulation identifiers that match VLAN tags.
C. One physical interface for each subinterface.
D. Subinterface numbering that matches VLAN tags.
E. A management domain for each subinterface.
F. one subinterface per VLAN
Two switches are connected through a trunk link. Which two commands show that there is a native VLAN mismatch on that link? (Choose two).
A. show interface trunk
B. show vlan brief
C. show interface switchport
D. show interface interface
E. show switchport trunk
F. show interface vlan
Two switches are connected through a trunk link. Which two commands show that there is a native VLAN mismatch on that link? (Choose two).
A. show interface trunk
B. show vlan brief
C. show interface switchport
D. show interface interface
E. show switchport trunk
F. show interface vlan
Refer to the exhibit.
A technician has configured the FastEthernet 0/ 1 interface on Sw11 as an access link in VLAN 1. Based on the output from the show vlan brief command issued on Sw12, what will be the result of making this change on Sw11?
A. Only the hosts in VLAN 10 and VLAN 15 on the two switches will be able to communicate with each other.
B. Only the hosts in VLAN 1 on the two switches will be able to communicate with each other.
C. The hosts in all VLANs on the two switches will be able to communicate with each other.
D. Hosts will not be able to communicate between the two switches.
Refer to the exhibit.
A technician has configured the FastEthernet 0/ 1 interface on Sw11 as an access link in VLAN 1. Based on the output from the show vlan brief command issued on Sw12, what will be the result of making this change on Sw11?
A. Only the hosts in VLAN 10 and VLAN 15 on the two switches will be able to communicate with each other.
B. Only the hosts in VLAN 1 on the two switches will be able to communicate with each other.
C. The hosts in all VLANs on the two switches will be able to communicate with each other.
D. Hosts will not be able to communicate between the two switches.
Refer to the exhibit. What commands must be configured on the 2950 switch and the router to allow communication between host 1 and host 2? (Choose two).
A. Switch1 (config)# interface fastethernet 0/ 1
Switch1 (config-if)# switchport mode trunk
B. Switch1 (config)# interface vlan 1
Switch1 (config-if)# ip default-gateway 192.168.1.1
C. Router( config)# interface fastethernet 0/ 0
Router( config-if)# no shut down
Router( config)# interface fastethernet 0/ 0.1
Router( config-subif)# encapsulation dot1q 10
Router( config-subif)# ip address 192.168.10.1 255.255.255.0
Router( config)# interface fastethernet 0/ 0.2
Router( config-subif)# encapsulation dot1q 20
Router( config-subif)# ip address 192.168.20.1 255.255.255.0
D. Router( config)# interface fastethernet 0/ 0
Router( config-if)# ip address 192.168.1.1 255.255.255.0 Router( config-if)# no shut down
E. Switch1( config)# vlan database
Switch1( config-vlan)# vtp domain XYZ
Switch1( config-vlan)# vtp server
F. Router( config)# router eigrp 100
Router( config-router)# network 192.168.10.0
Router( config-router)# network 192.168.20.0
Refer to the exhibit. What commands must be configured on the 2950 switch and the router to allow communication between host 1 and host 2? (Choose two).
A. Switch1 (config)# interface fastethernet 0/ 1
Switch1 (config-if)# switchport mode trunk
B. Switch1 (config)# interface vlan 1
Switch1 (config-if)# ip default-gateway 192.168.1.1
C. Router( config)# interface fastethernet 0/ 0
Router( config-if)# no shut down
Router( config)# interface fastethernet 0/ 0.1
Router( config-subif)# encapsulation dot1q 10
Router( config-subif)# ip address 192.168.10.1 255.255.255.0
Router( config)# interface fastethernet 0/ 0.2
Router( config-subif)# encapsulation dot1q 20
Router( config-subif)# ip address 192.168.20.1 255.255.255.0
D. Router( config)# interface fastethernet 0/ 0
Router( config-if)# ip address 192.168.1.1 255.255.255.0 Router( config-if)# no shut down
E. Switch1( config)# vlan database
Switch1( config-vlan)# vtp domain XYZ
Switch1( config-vlan)# vtp server
F. Router( config)# router eigrp 100
Router( config-router)# network 192.168.10.0
Router( config-router)# network 192.168.20.0
Which three of these statements regarding 802.1Q trunking are correct? (Choose three).
A. 802.1Q trunks require full-duplex, point-to-point connectivity.
B. 802.1Q trunks can use 10 Mb/ s Ethernet interfaces. C. 802.1Q trunking ports can also be secure ports.
D. 802.1Q native VLAN frames are untagged by default. E. 802.1Q trunks should have native VLANs that are the same at both ends.
Which three of these statements regarding 802.1Q trunking are correct? (Choose three).
A. 802.1Q trunks require full-duplex, point-to-point connectivity.
B. 802.1Q trunks can use 10 Mb/ s Ethernet interfaces. C. 802.1Q trunking ports can also be secure ports.
D. 802.1Q native VLAN frames are untagged by default.
E. 802.1Q trunks should have native VLANs that are the same at both ends.
Refer to the exhibit.
A frame on VLAN 1 on switch S1 is sent to switch S2 where the frame is received on VLAN 2. What causes this behavior?
A. VLANs that do not correspond to a unique IP subnet B. allowing only VLAN 2 on the destination
C. native VLAN mismatches
D. trunk mode mismatches
Refer to the exhibit.
A frame on VLAN 1 on switch S1 is sent to switch S2 where the frame is received on VLAN 2. What causes this behavior?
A. VLANs that do not correspond to a unique IP subnet B. allowing only VLAN 2 on the destination
C. native VLAN mismatches
D. trunk mode mismatches
Assuming the default switch configuration, which VLAN range can be added, modified, and removed on a Cisco switch?
A. 2 through 1001
B. 2 through 1005
C. 1 through 1002
D. 1 through 1001
Assuming the default switch configuration, which VLAN range can be added, modified, and removed on a Cisco switch?
A. 2 through 1001
B. 2 through 1005
C. 1 through 1002
D. 1 through 1001
What is the purpose of frame tagging in virtual LAN (VLAN) configurations?
A. Inter-VLAN routing
B. Encryption of network packets
C. Frame identification over trunk links
D. Frame identification over access links
What is the purpose of frame tagging in virtual LAN (VLAN) configurations?
A. Inter-VLAN routing
B. Encryption of network packets
C. Frame identification over trunk links
D. Frame identification over access links
In a switched environment, what does the IEEE 802.1Q standard describe?
A. The operation of VTP.
B. A method of VLAN trunking.
C. An approach to wireless LAN communication.
D. The process for root bridge selection.
E. VLAN pruning.
In a switched environment, what does the IEEE 802.1Q standard describe?
A. The operation of VTP.
B. A method of VLAN trunking.
C. An approach to wireless LAN communication.
D. The process for root bridge selection.
E. VLAN pruning.
What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch?
A. It creates a VLAN 999 interface.
B. It designates VLAN 999 for untagged traffic.
C. It blocks VLAN 999 traffic from passing on the trunk. D. It designates VLAN 999 as the default for all unknown tagged traffic.
What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch?
A. It creates a VLAN 999 interface.
B. It designates VLAN 999 for untagged traffic.
C. It blocks VLAN 999 traffic from passing on the trunk. D. It designates VLAN 999 as the default for all unknown tagged traffic.
Which of the following are benefits of VLANs? (Choose three).
A. They increase the size of collision domains.
B. They allow logical grouping of users by function.
C. They can enhance network security.
D. They increase the size of broadcast domains while decreasing the number of collision domains.
E. They increase the number of broadcast domains while decreasing the size of the broadcast domains.
F. They simplify switch administration.
Which of the following are benefits of VLANs? (Choose three).
A. They increase the size of collision domains.
B. They allow logical grouping of users by function.
C. They can enhance network security.
D. They increase the size of broadcast domains while decreasing the number of collision domains.
E. They increase the number of broadcast domains while decreasing the size of the broadcast domains.
F. They simplify switch administration.
Refer to the exhibit.
All switch ports are assigned to the correct VLANs, but none of the hosts connected to SwitchA can communicate with hosts in the same VLAN connected to SwitchB. Based on the output shown, what is the most likely problem?
A. The access link needs to be configured in multiple VLANs.
B. The link between the switches is configured in the wrong VLAN.
C. The link between the switches needs to be configured as a trunk.
D. VTP is not configured to carry VLAN information between the switches.
E. Switch IP addresses must be configured in order for traffic to be forwarded between the switches.
Refer to the exhibit.
All switch ports are assigned to the correct VLANs, but none of the hosts connected to SwitchA can communicate with hosts in the same VLAN connected to SwitchB. Based on the output shown, what is the most likely problem?
A. The access link needs to be configured in multiple VLANs.
B. The link between the switches is configured in the wrong VLAN.
C. The link between the switches needs to be configured as a trunk.
D. VTP is not configured to carry VLAN information between the switches.
E. Switch IP addresses must be configured in order for traffic to be forwarded between the switches.
Which two link protocols are used to carry multiple VLANs over a single link? (Choose two).
A. VTP
B. 802.1q
C. IGP
D. ISL
E. 802.3u
Which two link protocols are used to carry multiple VLANs over a single link? (Choose two).
A. VTP
B. 802.1q
C. IGP
D. ISL
E. 802.3u
Which statement about VLAN operation on Cisco Catalyst switches is true?
A. When a packet is received from an 802.1Q trunk, the VLAN ID can be determined from the source MAC address and the MAC address table.
B. Unknown unicast frames are retransmitted only to the ports that belong to the same VLAN.
C. Broadcast and multicast frames are retransmitted to ports that are configured on different VLAN.
D. Ports between switches should be configured in access mode so that VLANs can span across the ports.
Which statement about VLAN operation on Cisco Catalyst switches is true?
A. When a packet is received from an 802.1Q trunk, the VLAN ID can be determined from the source MAC address and the MAC address table.
B. Unknown unicast frames are retransmitted only to the ports that belong to the same VLAN.
C. Broadcast and multicast frames are retransmitted to ports that are configured on different VLAN.
D. Ports between switches should be configured in access mode so that VLANs can span across the ports.
Which two benefits are provided by creating VLANs? (Choose two).
A. Added security
B. Dedicated bandwidth
C. Provides segmentation
D. Allows switches to route traffic between subinterfaces E. Contains collisions
Which two benefits are provided by creating VLANs? (Choose two).
A. Added security
B. Dedicated bandwidth
C. Provides segmentation
D. Allows switches to route traffic between subinterfaces E. Contains collisions
What are three advantages of VLANs? (Choose three).
A. VLANs establish broadcast domains in switched networks.
B. VLANs utilize packet filtering to enhance network security.
C. VLANs provide a method of conserving IP addresses in large networks.
D. VLANs provide a low-latency internetworking alternative to routed networks.
E. VLANs allow access to network services based on department, not physical location.
F. VLANs can greatly simplify adding, moving, or changing hosts on the network.
What are three advantages of VLANs? (Choose three).
A. VLANs establish broadcast domains in switched networks.
B. VLANs utilize packet filtering to enhance network security.
C. VLANs provide a method of conserving IP addresses in large networks.
D. VLANs provide a low-latency internetworking alternative to routed networks.
E. VLANs allow access to network services based on department, not physical location.
F. VLANs can greatly simplify adding, moving, or changing hosts on the network.
On a corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?
A. A router with subinterfaces configured on the physical interface that is connected to the switch.
B. A router with an IP address on the physical interface connected to the switch.
C. A switch with an access link that is configured between the switches.
D. A switch with a trunk link that is configured between the switches.
On a corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?
A. A router with subinterfaces configured on the physical interface that is connected to the switch.
B. A router with an IP address on the physical interface connected to the switch.
C. A switch with an access link that is configured between the switches.
D. A switch with a trunk link that is configured between the switches.
Refer to the exhibit.
Why has this switch not been elected the root bridge for VLAN1?
A. It has more than one interface that is connected to the root network segment.
B. It is running RSTP while the elected root bridge is running 802.1d spanning tree.
C. It has a higher MAC address than the elected root bridge.
D. It has a higher bridge ID than the elected root bridge.
Refer to the exhibit.
Why has this switch not been elected the root bridge for VLAN1?
A. It has more than one interface that is connected to the root network segment.
B. It is running RSTP while the elected root bridge is running 802.1d spanning tree.
C. It has a higher MAC address than the elected root bridge.
D. It has a higher bridge ID than the elected root bridge.
When a switch receives a BPDU, it first compares Switch priority, the lowest priority number wins the root election. In the event of a tie. it compares the MAC address, the smaller one wins. The Switch has a 32769 priority, which is greater than 20481, so this Switch will not elect the root bridge. Another Switch has a lower priority, and won the election for VLAN 1.
Refer to the exhibit.
Four Cisco 2950 switches are set to their default priority settings. During the spanning-tree process, which switch will be elected as the root bridge?
A. Switch 3
B. Switch 4
C. Switch 2
D. Switch 1
Refer to the exhibit.
Four Cisco 2950 switches are set to their default priority settings. During the spanning-tree process, which switch will be elected as the root bridge?
A. Switch 3
B. Switch 4
C. Switch 2
D. Switch 1
In spanning-tree. a bridge with the lowest priority and mac address wins the election to become the root bridge. If the bridge priority is the same across all Switches, the lowest mac address wins the election.
Refer to the exhibit.
Each of these four switches has been configured with a hostname. as well as being configured to run RSTP. No other configuration changes have been made. Which three of these show the correct RSTP port roles for the indicated switches and interfaces? (Choose three).
A. SwitchA, Fa0/ 2, designated
B. SwitchA, Fa0/ 1, root
C. SwitchB, Gi0/ 2, root
D. SwitchB, Gi0/ 1, designated
E. SwitchC, Fa0/ 2, root
F. SwitchD, Gi0/ 2, root
Refer to the exhibit.
Each of these four switches has been configured with a hostname. as well as being configured to run RSTP. No other configuration changes have been made. Which three of these show the correct RSTP port roles for the indicated switches and interfaces? (Choose three).
A. SwitchA, Fa0/ 2, designated
B. SwitchA, Fa0/ 1, root
C. SwitchB, Gi0/ 2, root
D. SwitchB, Gi0/ 1, designated
E. SwitchC, Fa0/ 2, root
F. SwitchD, Gi0/ 2, root
Refer to the exhibit.
A network administrator is configuring an EtherChannel between SW1 and SW2. The SW1 configuration is shown. What is the correct configuration for SW2?
A. interface FastEthernet 0/ 1
channel-group 1 mode active
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/ 2
channel-group 1 mode active
switchport trunk encapsulation dot1q
switchport mode trunk
B. interface FastEthernet 0/ 1
channel-group 2 mode auto
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/ 2
channel-group 2 mode auto
switchport trunk encapsulation dot1q
switchport mode trunk
C. interface FastEthernet 0/ 1
channel-group 1 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/ 2
channel-group 1 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
D. interface FastEthernet 0/ 1
channel-group 1 mode passive
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/ 2 channel-group 1 mode passive
switchport trunk encapsulation dot1q
switchport mode trunk
Refer to the exhibit.
A network administrator is configuring an EtherChannel between SW1 and SW2. The SW1 configuration is shown. What is the correct configuration for SW2?
A. interface FastEthernet 0/ 1
channel-group 1 mode active
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/ 2
channel-group 1 mode active
switchport trunk encapsulation dot1q
switchport mode trunk
B. interface FastEthernet 0/ 1
channel-group 2 mode auto
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/ 2
channel-group 2 mode auto
switchport trunk encapsulation dot1q
switchport mode trunk
C. interface FastEthernet 0/ 1
channel-group 1 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/ 2
channel-group 1 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
D. interface FastEthernet 0/ 1
channel-group 1 mode passive
switchport trunk encapsulation dot1q
switchport mode trunk
interface FastEthernet 0/ 2 channel-group 1 mode passive
switchport trunk encapsulation dot1q
switchport mode trunk
If the etherchannel was configured with mode “auto”, it was using PagP, so, we need to configure the other switch with “desirable” mode. Etherchannel modes are PagP and LACP. PagP modes are auto and Desirable; LACP modes are active and passive.
Refer to the exhibit.
What set of commands was configured on interface Fa0/ 3 to produce the given output?
A. interface FastEthernet 0/ 3
channel-group 1 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
B. interface FastEthernet 0/ 3
channel-group 2 mode passive
switchport trunk encapsulation dot1q
switchport mode trunk
C. interface FastEthernet 0/ 3
channel-group 2 mode active
switchport trunk encapsulation dot1q
switchport mode trunk
D. interface FastEthernet 0/ 3
channel-group 2 mode on
switchport trunk encapsulation dot1q
switchport mode trunk
Refer to the exhibit.
What set of commands was configured on interface Fa0/ 3 to produce the given output?
A. interface FastEthernet 0/ 3
channel-group 1 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
B. interface FastEthernet 0/ 3
channel-group 2 mode passive
switchport trunk encapsulation dot1q
switchport mode trunk
C. interface FastEthernet 0/ 3
channel-group 2 mode active
switchport trunk encapsulation dot1q
switchport mode trunk
D. interface FastEthernet 0/ 3
channel-group 2 mode on
switchport trunk encapsulation dot1q
switchport mode trunk
Refer to the exhibit.
If the devices produced the given output, what is the cause of the EtherChannel problem?
A. SW1’ s Fa0/ 1 interface is administratively shut down. B. There is an encapsulation mismatch between SW1’ s Fa0/ 1 and SW2’ s Fa0/ 1 interfaces.
C. There is an MTU mismatch between SW1’ s Fa0/ 1 and SW2’ s Fa0/ 1 interfaces.
D. There is a speed mismatch between SW1’ s Fa0/ 1 and SW2’ s Fa0/ 1 interfaces.
Refer to the exhibit.
If the devices produced the given output, what is the cause of the EtherChannel problem?
A. SW1’ s Fa0/ 1 interface is administratively shut down. B. There is an encapsulation mismatch between SW1’ s Fa0/ 1 and SW2’ s Fa0/ 1 interfaces.
C. There is an MTU mismatch between SW1’ s Fa0/ 1 and SW2’ s Fa0/ 1 interfaces.
D. There is a speed mismatch between SW1’ s Fa0/ 1 and SW2’ s Fa0/ 1 interfaces.
Refer to the exhibit.
Which switch provides the spanning-tree designated port role for the network segment that services the printers?
A. Switch1
B. Switch2
C. Switch3
D. Switch4
Refer to the exhibit.
Which switch provides the spanning-tree designated port role for the network segment that services the printers?
A. Switch1
B. Switch2
C. Switch3
D. Switch4
Refer to the exhibit.
At the end of an RSTP election process, which access layer switch port will assume the discarding role?
A. Switch3, port fa0/ 1
B. Switch3, port fa0/ 12
C. Switch4, port fa0/ 11
D. Switch4, port fa0/ 2
E. Switch3, port Gi0/ 1
F. Switch3, port Gi0/ 2
Refer to the exhibit.
At the end of an RSTP election process, which access layer switch port will assume the discarding role?
A. Switch3, port fa0/ 1
B. Switch3, port fa0/ 12
C. Switch4, port fa0/ 11
D. Switch4, port fa0/ 2
E. Switch3, port Gi0/ 1
F. Switch3, port Gi0/ 2
Switch 3 has a lower bridge ID than Switch 4, so both ports of Switch3 will be in forwarding state. The alternative port will belong to Switch4. Switch4 will need to block one of its ports to avoid a bridging loop between the two switches.
Refer to the exhibit.
Given the output shown from this Cisco Catalyst 2950, what is the reason that interface FastEthernet 0/ 10 is not the root port for VLAN 2?
A. This switch has more than one interface connected to the root network segment in VLAN 2.
B. This switch is running RSTP while the elected designated switch is running 802.1d Spanning Tree.
C. This switch interface has a higher path cost to the root bridge than another in the topology.
D. This switch has a lower bridge ID for VLAN 2 than the elected designated switch.
Refer to the exhibit.
Given the output shown from this Cisco Catalyst 2950, what is the reason that interface FastEthernet 0/ 10 is not the root port for VLAN 2?
A. This switch has more than one interface connected to the root network segment in VLAN 2.
B. This switch is running RSTP while the elected designated switch is running 802.1d Spanning Tree.
C. This switch interface has a higher path cost to the root bridge than another in the topology.
D. This switch has a lower bridge ID for VLAN 2 than the elected designated switch.
Refer to the exhibit.
The output that is shown is generated at a switch. Which three statements are true? (Choose three).
A. All ports will be in a state of discarding, learning, or forwarding.
B. Thirty VLANs have been configured on this switch.
C. The bridge priority is lower than the default value for spanning tree.
D. All interfaces that are shown are on shared media.
E. All designated ports are in a forwarding state.
F. This switch must be the root bridge for all VLANs on this switch.
Refer to the exhibit.
The output that is shown is generated at a switch. Which three statements are true? (Choose three).
A. All ports will be in a state of discarding, learning, or forwarding.
B. Thirty VLANs have been configured on this switch.
C. The bridge priority is lower than the default value for spanning tree.
D. All interfaces that are shown are on shared media.
E. All designated ports are in a forwarding state.
F. This switch must be the root bridge for all VLANs on this switch.
Refer to the exhibit.
Switch port FastEthernet 0/ 24 on ALSwitch1 will be used to create an IEEE 802.1Q-compliant trunk to another switch. Based on the output shown, what is the reason the trunk does not form, even though the proper cabling has been attached?
A. VLANs have not been created yet.
B. An IP address must be configured for the port.
C. The port is currently configured for access mode.
D. The correct encapsulation type has not been configured.
E. The “no shutdown” command has not been entered for the port.
Refer to the exhibit.
Switch port FastEthernet 0/ 24 on ALSwitch1 will be used to create an IEEE 802.1Q-compliant trunk to another switch. Based on the output shown, what is the reason the trunk does not form, even though the proper cabling has been attached?
A. VLANs have not been created yet.
B. An IP address must be configured for the port.
C. The port is currently configured for access mode.
D. The correct encapsulation type has not been configured.
E. The “no shutdown” command has not been entered for the port.
Refer to the exhibit.
Which ports will be STP designated ports if all the links are operating at the same bandwidth? (Choose three).
A. Switch A - Fa0/ 0
B. Switch A - Fa0/ 1
C. Switch B - Fa0/ 0
D. Switch B - Fa0/ 1
E. Switch C - Fa0/ 0
F. Switch C - Fa0/ 1
Refer to the exhibit.
Which ports will be STP designated ports if all the links are operating at the same bandwidth? (Choose three).
A. Switch A - Fa0/ 0
B. Switch A - Fa0/ 1
C. Switch B - Fa0/ 0
D. Switch B - Fa0/ 1
E. Switch C - Fa0/ 0
F. Switch C - Fa0/ 1
This question is to check the spanning tree election problem. Find the root bridge. which can be accomplished by comparing the bridge ID, the smallest will be selected. Bridge-id = bridge priority + MAC address. The three switches in the figure all have the default priority, so we should compare the MAC address, it is easy to find that SwitchB is the root bridge. Find the root port on the non-root bridge. which can be completed through comparing root path cost. The smallest will be selected as the root port. Next, find the Designated Port by comparing the path cost. If the costs happen to be the same. then compare the BID. The smallest will be selected. Each link has a DP. Based on the exhibit above. we can find DP on each link. The DP on the link between SwitchA and SwitchC is SwitchA’Fa0/ 1, because it has the smallest MAC address.
Refer to the exhibit.
How should the FastEthernet0/ 1 ports on the 2950 model switches that are shown in the exhibit be configured to allow connectivity between all devices?
A. The ports only need to be connected by a crossover cable.
B. SwitchX( config)# interface fastethernet 0/ 1
SwitchX( config-if)# switchport mode trunk
C. SwitchX( config)# interface fastethernet 0/ 1
SwitchX( config-if)# switchport mode access
SwitchX( config-if)# switchport access vlan 1
D. SwitchX( config)# interface fastethernet 0/ 1
SwitchX( config-if)# switchport mode trunk
SwitchX( config-if)# switchport trunk vlan 1
SwitchX( config-if)# switchport trunk vlan 10
SwitchX( config-if)# switchport trunk vlan 20
Refer to the exhibit.
How should the FastEthernet0/ 1 ports on the 2950 model switches that are shown in the exhibit be configured to allow connectivity between all devices?
A. The ports only need to be connected by a crossover cable.
B. SwitchX( config)# interface fastethernet 0/ 1
SwitchX( config-if)# switchport mode trunk
C. SwitchX( config)# interface fastethernet 0/ 1
SwitchX( config-if)# switchport mode access
SwitchX( config-if)# switchport access vlan 1
D. SwitchX( config)# interface fastethernet 0/ 1
SwitchX( config-if)# switchport mode trunk
SwitchX( config-if)# switchport trunk vlan 1
SwitchX( config-if)# switchport trunk vlan 10
SwitchX( config-if)# switchport trunk vlan 20
Refer to the exhibit.
Which statement is true?
A. The Fa0/ 11 role confirms that SwitchA is the root bridge for VLAN 20.
B. VLAN 20 is running the Per VLAN Spanning Tree Protocol.
C. The MAC address of the root bridge is 0017.596d. 1580.
D. SwitchA is not the root bridge. because not all of the interface roles are designated.
Refer to the exhibit.
Which statement is true?
A. The Fa0/ 11 role confirms that SwitchA is the root bridge for VLAN 20.
B. VLAN 20 is running the Per VLAN Spanning Tree Protocol.
C. The MAC address of the root bridge is 0017.596d. 1580.
D. SwitchA is not the root bridge. because not all of the interface roles are designated.
Refer to the exhibit.
Which two statements are true of the interfaces on Switch1? (Choose two).
A. Multiple devices are connected directly to FastEthernet0/ 1.
B. A hub is connected directly to FastEthernet0/ 5.
C. FastEthernet0/ 1 is connected to a host with multiple network interface cards.
D. FastEthernet0/ 5 has statically assigned MAC addresses.
E. FastEthernet0/ 1 is configured as a trunk link. F. Interface FastEthernet0/ 2 has been disabled.
Refer to the exhibit.
Which two statements are true of the interfaces on Switch1? (Choose two).
A. Multiple devices are connected directly to FastEthernet0/ 1.
B. A hub is connected directly to FastEthernet0/ 5.
C. FastEthernet0/ 1 is connected to a host with multiple network interface cards.
D. FastEthernet0/ 5 has statically assigned MAC addresses.
E. FastEthernet0/ 1 is configured as a trunk link. F. Interface FastEthernet0/ 2 has been disabled.
Refer to the exhibit.
The two exhibited devices are the only Cisco devices on the network. The serial network between the two devices has a mask of 255.255.255.252. Given the output that is shown, what three statements are true of these devices? (Choose three).
A. The Manchester serial address is 10.1.1.1.
B. The Manchester serial address is 10.1.1.2.
C. The London router is a Cisco 2610.
D. The Manchester router is a Cisco 2610.
E. The CDP information was received on port Serial0/ 0 of the Manchester router.
F. The CDP information was sent by port Serial0/ 0 of the London router.
Refer to the exhibit.
The two exhibited devices are the only Cisco devices on the network. The serial network between the two devices has a mask of 255.255.255.252. Given the output that is shown, what three statements are true of these devices? (Choose three).
A. The Manchester serial address is 10.1.1.1.
B. The Manchester serial address is 10.1.1.2.
C. The London router is a Cisco 2610.
D. The Manchester router is a Cisco 2610.
E. The CDP information was received on port Serial0/ 0 of the Manchester router.
F. The CDP information was sent by port Serial0/ 0 of the London router.
Refer to the exhibit.
For security reasons, information about RTA, including platform and IP addresses, should not be accessible from the Internet. This information should, however, be accessible to devices on the internal networks of RTA. Which command or series of commands will accomplish these objectives?
When CDP is enabled globally using the cdp run command, it is enabled by default on all supported interfaces to send and receive CDP information. You can disable CDP on an interface that supports CDP with the no cdp enable command.
A. RTA( config)# no cdp run
B. RTA( config)# no cdp enable
C. RTA( config)# interface s0/ 0 RTA( config-if)# no cdp run
D. RTA( config)# interface s0/ 0 RTA( config-if)# no cdp enable
Refer to the exhibit.
For security reasons, information about RTA, including platform and IP addresses, should not be accessible from the Internet. This information should, however, be accessible to devices on the internal networks of RTA. Which command or series of commands will accomplish these objectives?
When CDP is enabled globally using the cdp run command, it is enabled by default on all supported interfaces to send and receive CDP information. You can disable CDP on an interface that supports CDP with the no cdp enable command.
A. RTA( config)# no cdp run
B. RTA( config)# no cdp enable
C. RTA( config)# interface s0/ 0 RTA( config-if)# no cdp run
D. RTA( config)# interface s0/ 0 RTA( config-if)# no cdp enable
Refer to the exhibit.
If CDP is enabled on all devices and interfaces, which devices will appear in the output of a show cdp neighbors command issued from R2?
A Cisco device enabled with CDP sends out periodic interface updates to a multicast address in order to make itself known to neighbors. Since it is a layer two protocol, these packets are not routed. The devices detected would be immediately connected neighbors.
A. R2 and R3
B. R1 and R3
C. R3 and S2
D. R1, S1, S2, and R3
E. R1, S1, S2, R3, and S3
Refer to the exhibit.
If CDP is enabled on all devices and interfaces, which devices will appear in the output of a show cdp neighbors command issued from R2?
A Cisco device enabled with CDP sends out periodic interface updates to a multicast address in order to make itself known to neighbors. Since it is a layer two protocol, these packets are not routed. The devices detected would be immediately connected neighbors.
A. R2 and R3
B. R1 and R3
C. R3 and S2
D. R1, S1, S2, and R3
E. R1, S1, S2, R3, and S3
Refer to the exhibit.
A problem with network connectivity has been observed. It is suspected that the cable connected to switch port Fa0/ 9 on Switch1 is disconnected. What would be an effect of this cable being disconnected?
A. Host B would not be able to access the server in VLAN9 until the cable is reconnected.
B. Communication between VLAN3 and the other VLANs would be disabled.
C. The transfer of files from Host B to the server in VLAN9 would be significantly slower.
D. For less than a minute, Host B would not be able to access the server in VLAN9. Then normal network function would resume.
Refer to the exhibit.
A problem with network connectivity has been observed. It is suspected that the cable connected to switch port Fa0/ 9 on Switch1 is disconnected. What would be an effect of this cable being disconnected?
A. Host B would not be able to access the server in VLAN9 until the cable is reconnected.
B. Communication between VLAN3 and the other VLANs would be disabled.
C. The transfer of files from Host B to the server in VLAN9 would be significantly slower.
D. For less than a minute, Host B would not be able to access the server in VLAN9. Then normal network function would resume.
