单项选择题

Routers R1 and R2 are configured for HSRP as shown below:  
Router R1:  
interface ethernet 0  
ip address 20.6.2.1 255.255.255.0  
standby 35 ip 20.6.2.21  
standby 35 priority 100  
interface ethernet 1  
ip address 20.6.1.1.2 255.255.255.0  
standby 34 ip 20.6.1.21   
Router R2:  
interface ethernet 0  
ip address 20.6.2.2 255.255.255.0  
standby 35 ip 20.6.2.21  
interface ethernet 1  
ip address 20.6.1.1.1 255.255.255.0  
standby 34 ip 20.6.1.21 
standby 34 priority 100  
You have configured the routers R1 & R2 with HSRP. While debugging router R2 you notice very  
frequent HSRP group state transitions. 
What is the most likely cause of this? ()

A. physical layer issues
B. no spanning tree loops
C. use of non-default HSRP timers
D. failure to set the command standby 35 preempt


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1.单项选择题

Exhibit 

Which command will ensure that Company2 will be the primary router for traffic using the gateway  address of 172.16.15.20? ()

A. On R2 add the command standby 1 priority 80
B. On R1 add the command standby 1 priority 110
C. On R1 add the command standby 1 priority 80
D. On R2 remove the command standby 1 preempt

2.单项选择题

Refer to the exhibit. What statement is true based upon the configuration of router R1 and router  R2?()

A. Router R2 will become the master for Virtual Router 1, and router R1 will become the backup  for Virtual Router 2.
B. Router R1 will become the master for Virtual Router 1, and router R2 will become the backup  for Virtual Router 2.
C. Router R1 will become the active virtual gateway.
D. Router R2 will become the active virtual gateway.
E. The hello and hold timers are incompatible with OSPF type 5 LSAs.
F. The hello and hold timers are incompatible with multi-homed BGP.

3.单项选择题

.Refer to the exhibit and the partial configuration on routers R1 and R2. Hot Standby Routing  Protocol (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 R2 should be configured with a decrement value of 20.
B. The Serial0 interface on router R1 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 a HSRP virtual address.

4.单项选择题

Refer to the exhibit. Based on the debug standby output in the exhibit, which HSRP statement is true? ()

A. DSW111 is the active router because it is the only HRSP-enabled router on that segment.
B. DSW111 is the active router because the standby timer has been incorrectly configured.
C. DSW111 is the active router because it has a lower priority on that VLAN.
D. DSW111 is the active router because it has a lower IP address than the tying priority router on  that VLAN.
E. DSW111 is the active router and is advertising the virtual IP address 10.10.10.111 on VLAN 11.

5.单项选择题

Refer to the exhibit. Based on the debug standby output in the exhibit,
 which HSRP statement is  true?()

A. DSW111 is the active router because it is the only HRSP-enabled router on that segment.
B. DSW111 is the active router because the standby timer has been incorrectly configured.
C. DSW111 is the active router because it has a lower priority on that VLAN.
D. DSW111 is the active router because it has a lower IP address than the tying priority router on  that VLAN.
E. DSW111 is the active router and is advertising the virtual IP address 10.10.10.111 on VLAN 11.

6.单项选择题

Refer to the exhibit. Assume that Host A can ping the corporate headquarters and that HSRP is  configured on DSw1, which is then reloaded. Assume that DSw2 is then configured and reloaded.  On the basis of this information, 
what conclusion can be drawn? ()

A. DSw1 will be the active router because it has the lower priority configured.
B. DSw1 will be the standby router because it has the lower IP address.
C. DSw2 will be the active router because it booted last.
D. DSw1 will be the active router because it booted first.
E. DSw2 will be the active router because it has the higher priority that is configured.
F. DSw2 will be the standby router because it has the higher IP address.

7.多项选择题Which three of the following network features are methods used to achieve high availability? ()

A. Spanning Tree Protocol (STP)
B. Delay reduction
C. Hot Standby Routing Protocol (HSRP)
D. Dynamic routing protocols
E. Quality of Service (QoS)
F. Jitter management

8.单项选择题

What can be determined about the HSRP relationship from the displayed debug output? ()

A. Router 172.16.11.112 will be the active router because its HSRP priority is preferred over router  172.16.11.111.
B. Router 172.16.11.111 will be the active router because its HSRP priority is preferred over router  172.16.11.112.
C. The IP address 172.16.11.111 is the virtual HSRP router IP address.
D. The IP address 172.16.11.112 is the virtual HSRP router IP address.
E. The nonpreempt feature is enabled on the 172.16.11.112 router.
F. The preempt feature is not enabled on the 172.16.11.111 router.

9.多项选择题

Examine the router output above. 
Which two items are correct? ()

A. The local IP address of Router A is 10.1.0.6.
B. The local IP address of Router A is 10.1.0.20.
C. If Ethernet 0/2 goesdown, the standby router will take over.
D. When Ethernet 0/3 of RouterA comes back up, the priority will become 105.
E. Router A will assume the active state if its priority is the highest.

10.多项选择题

Refer to the exhibit. Based upon the debug output that is shown, 
which three statements about  HSRP are true?()

A. The router with IP address 172.16.11.111 haspreempt configured.  
B. The final active router is the router with IP address 172.16.11.111.
C. The router with IP address 172.16.11.112 has nonpreempt configured.
D. The priority of the router with IP address 172.16.11.112 is preferred over the router with IP  address 172.16.11.111.
E. The router with IP address 172.16.11.112 is using default HSRP priority.
F. The IP address 172.16.11.115 is the virtual HSRP IP address.

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