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Cisco Implementing Cisco IP Switched Networks Sample Questions:

Question 1

Refer to the exhibit and the partial configuration on routers R1 and R2.

HSRP is configured on the network to provide network redundancy for the IP traffic. The network administrator noticed that R2 does not become active when the R1 serial0 interface goes down. What should be changed in the configuration to fix the problem?

A. The Serial0 interface on router R1 should be configured with a decrement value of 20.
B. The Serial0 interface on router R2 should be configured with a decrement value of 20.
C. R2 should be configured with a standby priority of 100.
D. R2 should be configured with an HSRP virtual address.

Question 2

CORRECT TEXT
Acme is small export company that has an existing enterprise network comprised of 5 switches; CORE,DSW1,
DSW2,ASW1 and ASW2. The topology diagram indicates their desired pre-VLAN spanning tree mapping.
Previous configuration attempts have resulted in the following issues:
-CORE should be the root bridge for VLAN 20; however, DSW1 is currently the root bridge for VLAN 20.
-
Traffic for VLAN 30 should be forwarding over the gig 1/0/6 trunk port between DSW1 and DSW2.
However VLAN 30 is currently using gig 1/0/5.
-
Traffic for VLAN 40 should be forwarding over the gig 1/0/5 trunk port between DSW1 and DSW2.
However VLAN 40 is currently using gig 1/0/6.
You have been tasked with isolating the cause the these issuer and implementing the appropriate solutions. You task is complicated by the fact that you only have full access to DSW1, with isolating the cause of these issues and implementing the appropriate solutions, Your task is complicated by the fact that you only have full access to DSW1, with the enable secret password cisco. Only limited show command access is provided on CORE, and DSW2 using the enable 2 level with a password of acme. No configuration changes will be possible on these routers. No access is provided to ASW1 or ASW2.

hostname DSW1 ! enable secret 5 $1$wN16$j5RnayatKfxaKxhX30TVo0 ! no aaa new-model switch 1 provision ws-c3750g-24t ip subnet-zero ! ! ! ! ! ! no file verify auto ! spanning-tree mode pvst spanning-tree extend systen-id spanning-tree "vlan 20 priority 28672 spanning-tree vlan 30 priority 24576 ! vlan internal allocation policy ascending ! ! interface GigabitEthernet1/0/1 description trunk line to ASW1 switchport trunk encapsulation dotlq switchport mode trunk switchport nonegotiate speed 100 duplex full ! interface GigabitEthernet1/0/2
shutdown ! interface GigabitEthernet1/0/3 shutdown ! interface GigabitEthernet1/0/4 shutdown ! interface GigabitEthernet1/0/5 description trunk line to DSW 2 switchport trunk encapsulation dotlq switcbport mode trunk switchport nonegotiate speed 100 duplex full ! interface GigabitEthernet1/0/6 description trunk line to DSW 2 switchport trunk encapsulation dotlq
switchport mode trunk switchport nonegotiate speed 100 duplex full ! interface GigabitEthemet1/0/7 shutdown ! interface GigabitEthemet1/0/8 shutdown ! Interface GigabitEthernetl/0/9
description trunk line to CORE switchport trunk encapsulation dotlq
switchport mode trunk ! end
DSW1# Show sp DSW1# Show spanning-tree
VLAN0001 Spanning tree enabled protocol ieee
Root ID Priority 32769 Address 0016. 4658. f300 Cost 19 Port 9 (GigabitEthernet/0/9) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 0016. 46fa. 9b00 Hello Time 2 sec Max Age 20 sec Forward Delay I5 sec Aging Time 300

VLAN0020 Spanning three enabled protocol ieee
Root ID Priority 28692 Address 0016. 46fa. 9b00 This bridge is the root
Bridge ID Priority 28692 (priority 28672 sys-id-ext 20) Address 0016. 46fa. 9b00 Hello Time 2 sec Max Age 20 sec Forward Delay I5 sec Aging Time 300

VLAN0020 Spanning three enabled protocol ieee
Root ID Priority 28692 Address 0016. 46fa. 9b00 This bridge is the root
Bridge ID Priority 28692 (priority 28672 sys-id-ext 20) Address 0016. 46fa. 9b00 Hello Time 2 sec Max Age 20 sec Forward Delay I5 sec Aging Time 300

VLAN0030 Spanning three enabled protocol ieee
Root ID Priority 24606 This bridge is the root
Bridge ID Priority 28692 (priority 28672 sys-id-ext 20) Address 0016. 46fa. 9b00 Hello Time 2 sec Max Age 20 sec Forward Delay I5 sec Aging Time 300

VLAN0040 Spanning three enabled protocol ieee
Root ID Priority 24616 Address 0016. 46fa. 6a00 Cost 19 Port 9 (GigabitEthernet/0/9) Hello Time 2 sec Max Age 20 sec Forward Delay I5 sec
Bridge ID Priority 32808 (priority 32768 sys-id-ext 40) Address 0016. 46fa. 9b00 Hello Time 2 sec Max Age 20 sec Forward Delay I5 sec Aging Time 300 DSW1#

DSW1#

Question 3

Refer to the exhibit.

Assume that Switch_A is active for the standby group and the standby device has only the default HSRP configuration. Which statement is true?

A. If Switch_A had the highest priority number, it would not take over as active router.
B. If port Fa1/1 on Switch_A goes down, the standby device takes over as active.
C. If the current standby device had the higher priority value, it would take over the role of active for the HSRP group.
D. If port Fa1/1 on Switch_A goes down, the new priority value for the switch would be 190.

Question 4

Which command can be issued without interfering with the operation of loop guard?

A. Switch(config-if)#spanning-tree portfast
B. Switch(config-if)#switchport mode trunk
C. Switch(config-if)#switchport mode access
D. Switch(config-if)#spanning-tree guard root

Question 5

Refer to the exhibit.

VLAN 1 and VLAN 2 are configured on the trunked links between Switch A and Switch B.
Port Fa 0/2 on Switch B is currently in a blocking state for both VLANs. What should be done to load balance VLAN traffic between Switch A and Switch B?

A. Make the bridge ID of Switch B lower than the ID of Switch A.
B. Enable HSRP on the access ports.
C. Lower the port priority for VLAN 1 on port 0/1 for Switch
D. Lower the port priority for VLAN 1 on port 0/2 for Switch A.

Solutions: