Ccna certification Practice Tests

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Appendix 

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  Answers to Practice Test Questions

 186.  A.  The command 

show ip ospf will allow you to verify the currently configured router 

ID (RID) or the IP address acting as the router’s RID. The command 

show ip interface 

is incorrect. The command 

show ip ospf rid is incorrect. The command show ip ospf 

neighbor is incorrect.

 187.  C.  The wildcard mask is 0.0.0.15 for a network advertisement of 192.168.1.16/28. 

A wildcard mask is a bitwise calculation that matches the bits that change. The /28 

has subnets with multiples of 16. The easiest way to calculate wildcard masks for 

configuration is to subtract 1 from the subnet you are trying to match; for example, 

matching a subnet of 16 in the fourth octet minus 1 equals 15.

 188.  A.  The command 

show ip ospf neighbor will show all of the adjacencies formed as 

well as the routers discovered. The command 

show router adjacency is incorrect. The 

command 

show ip ospf is incorrect. The command show ip ospf router is incorrect.