QA

Q&A

The questions and scenarios in this book are more difficult than what you should experience on the actual exam. The questions do not attempt to cover more breadth or depth than the exam; however, they are designed to make sure that you know the answer. Rather than allowing you to derive the answers from clues hidden inside the questions themselves, the questions challenge your understanding and recall of the subject. Hopefully, these questions will help limit the number of exam questions on which you narrow your choices to two options and then guess.

You can find the answers to these questions in Appendix A.

1.	A multilayer switch has been configured with the command standby 5 priority 120. What router-redundancy protocol is being used?
2.	What feature can you use to prevent other routers from accidentally participating in an HSRP group?
3.	What command can configure an HSRP group to use a virtual router address of 192.168.222.100?
4.	The show standby vlan 271 command produces the following output: Vlan271 - Group 1 Local state is Active, priority 210, may preempt Hellotime 3 holdtime 40 configured hellotime 3 sec holdtime 40 sec Next hello sent in 00:00:00.594 Virtual IP address is 192.168.111.1 configured Secondary virtual IP address 10.1.111.1 Secondary virtual IP address 172.21.111.1 Active router is local Standby router is unknown expires in 00:00:37 Standby virtual mac address is 0000.0c07.ac01 2 state changes, last state change 5d17h If the local router fails, which router takes over the active role for the virtual router address 192.168.111.1?
5.	What is meant by pre-empting in HSRP?
6.	What protocols discussed in this chapter support interface tracking?
7.	The show standby brief command has been used to check the status of all HSRP groups on the local router. The output from this command is as follows: Switch# show standby brief P indicates configured to preempt. | Interface Grp Prio P State Active addr Standby addr Group addr Vl100 1 210 P Active local 192.168.75.2 192.168.75.1 Vl101 1 210 P Active local 192.168.107.2 192.168.107.1 Vl102 1 210 P Active local 192.168.71.2 192.168.71.1 Each interface is shown to have Group 1. Is this a problem?
8.	How many HSRP groups are needed to load-balance traffic over two routers?
9.	What load-balancing methods can GLBP use?
10.	What command can you use to see the status of the active and standby routers on the VLAN 171 interface?
11.	How many GLBP groups are needed to load-balance traffic over four routers?
12.	To use NSF on a multilayer switch with redundant supervisor modules, what must be configured in addition to the redundancy mode? What else must be present in the network?
13.	How is SSO different from SRM with SSO redundancy mode?
14.	If two Catalyst 6500 power supplies are configured with the power redundancy-mode combined, what will happen if one of them fails?