Computer Network Mcqs

Page No. 59

Which OSPF show command describes a list of OSPF adjacencies?


aShow ip ospf interface


b Show ip ospf


c Show ip route


d Show ip ospf neighbor



Which two commands are required for basic OSPF configuration?


a“[Network mask] area [area-id]” and “Router ospf [process-id]”


b“[Wildcard-mask] area [area-id]” and “[Network mask] area [area-id]”


cOnly “Router ospf [process-id]”


d) “[Wildcard-mask] area [area-id]” and “Router ospf [process-id]”



Which field is NOT a field within an OSPF packet header?


aPacket length


bRouter ID


cAuthentication type


dMaxage time


View Answer Maxage time

At which interval does OSPF refresh LSAs?


a10 seconds


b30 seconds


c30 minutes


d 1 hour


View Answer 1 hour

DBD packets are involved during which two states?


aExstart and exchange


bLoading and Two-way


cInit and Full


dDown and Loading


View Answer Exstart and exchange

The Hello protocol sends periodic updates to ensure that a neighbor relationship is maintained between adjacent routers.


aTrue


bFalse


cA & B


d None of the above


View Answer True

Which multicast address does the OSPF Hello protocol use?


a 224.0.0.5


b224.0.0.6


c 224.0.0.7


d224.0.0.8


View Answer 224.0.0.5

Which packet is NOT an OSPF packet type?


a LSU


b LSR


cDBD


dQuery


View Answer Query

What is the IP protocol number for OSPF packets?


a 89


b 86


c20


d76


View Answer 89

The outcome of Dijkstra’s calculation is used to populate the __________


aTopology table


bRouting table


cNeighbor table


dAdjacency table


View Answer Routing table

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