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HSRP Questions 5

May 7th, 2014 Go to comments

Here you will find answers to HSRP Questions – Part 5

Question 1

You work as a network technician , study the exhibit carefully. Which two statements are true about the output from the show standby vlan 50 command? (Choose two)

Catalyst_A# show standby vlan 50
VLAN50 – Group 1
Local State is Active, priority 200 may preempt
Hellotime 3 sec, holdtime 10 sec
Next hello sent in 1.302
Virtual IP address is 192.168.1.1 configured
Active router is local
Standby router is 192.186.1.11 expires in 9.443
Virtual MAC address is 0000.0c07.ac01
Authentication text ”AuthenKey”
2 state changes, last state change 00:11:30
IP redundancy name is “hsrp-Vl150-1” (default)VLAN50 -Group 2
Local State is Standby , priority 100
Hellotime 3 sec, holdtime 10 sec
Next hello sent in 0.98
Virtual IP address is 192.186.1.2 configured
Active router is 192.168.1.11 , priority 200 expires in 6.334
Standby router is local
Authentication text “AuthenKey”
3 state changes, last state change 0:09:30
IP redundancy name is “hsrp-Vl150-2” (default)

A. Catalyst_A is load sharing traffic in VLAN 50.
B. Hosts using the default gateway address of 192.168.1.2 will have their traffic sent to Catalyst_A.
C. The command standby 1 preempt was added to Catalyst_A.
D. Hosts using the default gateway address of 192.168.1.1 will have their traffic sent to 192.168.1.11 even after Catalyst _A becomes available again.

 

Answer: A C

Explanation

The output shows that the Catalyst_A switch is the active router for HSRP group 1 and the standby router for HSRP group 2 on interface VLAN 50. This means that another switch is the active router for HSRP group 2 on interface VLAN 50 -> A is correct, Catalyst_A is load sharing traffic in VLAN 50.

B is not correct, only hosts using the default gateway address of 192.168.1.1 will have their traffic sent to Catalyst_A

From the output, we notice that there is a line showing that “Local State is Active, priority 200 may preempt”. This indicates the command “standby 1 preempt” was added to Catalyst_A. If the active router (this router) fails, another router takes over its active role. The original active router is not allowed to resume the active role when it is restored until the new active router fails. Pre-empting allows a higher-priority router to take over the active role immediately.

Question 2

You are a network technician, study the exhibit carefully. Assume that Host PC can ping the Corporate Headquarters and that HSRP is configured on DS1, which is then reloaded. Assume that DS2 is then configured and reloaded. On the basis of this information, what conclusion can be drawn?

HSRP_Reboot

DS1# show running-config
interface Vlan10
ip address 10.10.10.2 255.255.255.0
no ip redirects
standby 60 priority 105
standby 60 ip 10.10.10.1
standby 60 track GigabitEthernet 0/1
———————————————
DS2# show running-config
interface Vlan10
ip address 10.10.10.3 255.255.255.0
no ip redirects
standby 60 priority 150
standby 60 ip 10.10.10.1
standby 60 track GigabitEthernet 0/1

A. DS1 will be the active router because it booted first.
B. DS1 will be the standby router because it has the lower IP address.
C. DS1 will be the active router because it has the lower priority configured.
D. DS2 will be the active router because it booted last.

 

Answer: A

Explanation

The configuration does not have the “standby 60 preempt”command so the first booted router will take the active role with any priority.

Question 3

HSRP is a Cisco-proprietary protocol developed to allow several routers (or multilayer switches) to appear as a single gateway address. Which two statements are true about the Hot Standby Router Protocol (HSRP)? (Choose two)

A – Load sharing with HSRP is achieved by creating multiple subinterfaces on the HSRP routers.
B – Routers configured for HSRP can belong to multiple groups and multiple VLANs.
C – All routers configured for HSRP load balancing must be configured with the same priority.
D – Load sharing with HSRP is achieved by creating HSRP groups on the HSRP routers.

 

Answer: B D

Question 4

You are a network technician, do you know which three statements are correct about a default HSRP configuration? (Choose three)

A – The Standby track interface priority is 10.
B – The Standby priority is 100.
C – The Standby hold time is 10 seconds.
D – Two HSRP groups are configured.

 

Answer: A B C

Question 5

Which three protocols have been developed for IP routing redundancy to protect against first-hop router failure? (Choose three)

A. GLBP
B. ICMP
C. MSTP
D. HSRP
E. VRRP
F. NHRP

 

Answer: A D E

Explanation

All three protocols above are used for IP routing redundancy to protect against first-hop router failure. Some main differences of them are listed below:

HSRP: is a Cisco proprietary protocol.
VRRP: Open standard, created by IETF
GLBP: is a Cisco proprietary protocol. It is the only protocol (in three) supports load-balancing.

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