Computer Networks Online Quiz Online Exam Quiz
Computer Networks Online Quiz GK Quiz. Question and Answers related to Computer Networks Online Quiz. MCQ (Multiple Choice Questions with answers about Computer Networks Online Quiz
Which two commands are required for basic OSPF configuration?
Options
A : “[Network mask] area [area-id]” and “Router ospf [process-id]”
B : “[Wildcard-mask] area [area-id]” and “[Network mask] area [area-id]”
C : Only “Router ospf [process-id]”
D : “[Wildcard-mask] area [area-id]” and “Router ospf [process-id]”
At which interval does OSPF refresh LSAs?
Options
A : 10 seconds
B : 30 seconds
C : 30 minutes
D : 1 hour
Which multicast address does the OSPF Hello protocol use?
Options
A : 224.0.0.5
B : 224.0.0.6
C : 224.0.0.7
D : 224.0.0.8
Each LSA has its own age timer. By default, how long does an LSA wait before requiring an update?
Options
A : 30 seconds
B : 1 minute
C : 30 minutes
D : 1 hour
What is the IP protocol number for OSPF packets?
Options
A : 89
B : 86
C : 20
D : 76
DBD packets are involved during which two states?
Options
A : Exstart and exchange
B : Loading and Two-way
C : Init and Full
D : Down and Loading
An OSPF router receives an LSA, the router checks its sequence number, and this number matches the sequence number of the LSA that the receiving router already has. What does the receiving router do with the LSA?
Options
A : Ignores the LSA
B : Adds it to the database
C : Sends newer LSU update to source router
D : Floods the LSA to the other routers
An OSPF router receives an LSA. The router checks its sequence number and finds that this number is higher than the sequence number it already has. Which two tasks does the router perform with the LSA?
Options
A : Ignores the LSA
B : Adds it to the database
C : Sends newer LSU update to source router
D : Floods the LSA to the other routers
An OSPF router receives an LSA. The router checks its sequence number and finds that this number is lower than the sequence number it already has. What does the router do with the LSA?
Options
A : ignores the LSA
B : adds it to the database
C : sends newer LSU update to source router
D : floods the LSA to the other routers
Which packet is NOT an OSPF packet type?
Options
A : LSU
B : LSR
C : DBD
D : Query
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