chapter 5 quiz/exam

Question 1

Which two pieces of information are used by the OSPF MD5 algorithm to generate a signature?

Answer 1

the secret key and the OSPF message

Question 2

What is a recommended method of authentication for OSPFv3?

Answer 2

ipsec (Ip-secure) secure routing updates. because OSPFv3 does not include authentication capabilities.

Question 3

When OSPFv2 neighbors are establishing adjacencies, in which state do they elect a DR and BDR router

Answer 3

2 way state… On Ethernet links, elect a DR, and a BDR

Question 4

ospfv2 network: 2 routers connected via point to point over WAN are not establishing an adjacency but the routing process, network commands and area id are all correct. what is the problem?

Answer 4

the subnet masks on 2 connected serial interfaces do not match.

Question 5

A network engineer is troubleshooting OSPFv2 routing issues on two connected routers. Which two requirements to form an adjacency need to be verified?

Answer 5

verify that interfaces that connect routers are in the same area and subnet.

Question 6

what does the command do: ip ospf priority ‘number’

Answer 6

sets the priority of the router (0-255) 1 is default. this is how the DR, BDR and DRother are chosen. if same then highest router id is chosen otherwise highest loopback.