Computer Networks MCQs with Answers
Practice important Computer Networks MCQs with answers and explanations.
Chapter: 15
Q521:
Each WAN packet consists of __________.
A. Header only
B. Address only
C. Payload only
D. Header and payload
Correct Answer:
D
Chapter: 15
Q522:
Packet switches can be connected in __________ topologies.
A. Symmetric only
B. Star only
C. Mesh, star, or any irregular
D. Bus only
Correct Answer:
C
Chapter: 15
Q523:
The function of packet switch memory is to __________.
A. Store software
B. Save files
C. Buffer packets
D. Encrypt data
Correct Answer:
C
Chapter: 15
Q524:
Switches used in LAN provide __________ communication.
A. Sequential
B. Simultaneous
C. Broadcast
D. Non-reliable
Correct Answer:
B
Chapter: 16
Q525:
What is the main benefit of source independence in routing?
A. It allows faster data transfer
B. Packet switch stores more data
C. It uses a static route
D. It notifies all nodes on the network
Correct Answer:
A
Chapter: 16
Q526:
What is meant by source independence in routing?
A. Routing depends on the source
B. Routing depends on the final address
C. Routing decision is made at source
D. Routing path is independent of source
Correct Answer:
D
Chapter: 16
Q527:
Why is source independence useful in a network?
A. It requires less routing information
B. It makes routing slow
C. It overloads the network
D. It increases data loss
Correct Answer:
A
Chapter: 16
Q528:
In source-independent routing, what does a packet switch need to know?
A. Only the source address
B. Complete route to the destination
C. Only the destination's next hop
D. The final router only
Correct Answer:
C
Chapter: 16
Q529:
Routing tables store information about ______.
A. network topology
B. next hop to destinations
C. full messages
D. IP packets
Correct Answer:
B
Chapter: 16
Q530:
What can be done to collapse routing tables?
A. Merge all routes
B. Use same next hop for similar destinations
C. Remove all destinations
D. Use random paths
Correct Answer:
B
Chapter: 16
Q531:
When all destinations on the same switch share a next hop, routing table entries can be ______.
A. increased
B. collapsed
C. duplicated
D. randomized
Correct Answer:
B
Chapter: 16
Q532:
How can we increase WAN capacity?
A. Add more computers
B. Add more cables
C. Add more switches and links
D. Remove switches
Correct Answer:
C
Chapter: 16
Q533:
The switch without any attached computers is called ______.
A. core switch
B. external switch
C. interior switch
D. hub
Correct Answer:
C
Chapter: 16
Q534:
The switch that has computers attached to it is called ______.
A. core switch
B. interior switch
C. packet switch
D. exterior switch
Correct Answer:
D
Chapter: 16
Q535:
Interior and exterior switches both require ______.
A. packet headers
B. computer ports
C. network cables
D. routing tables
Correct Answer:
D
Chapter: 16
Q536:
Universal routing requires a routing table to have ______.
A. destination names
B. all node addresses
C. next hop for each destination
D. full path to each node
Correct Answer:
C
Chapter: 16
Q537:
Optimal routing ensures that the next hop is ______.
A. least expensive
B. closer in topology
C. on the shortest path
D. random
Correct Answer:
D
Chapter: 16
Q538:
How is a WAN modeled for routing computation?
A. As a table
B. As a tree
C. As a queue
D. As a graph
Correct Answer:
D
Chapter: 16
Q539:
In WAN modeling, what do nodes represent?
A. packets
B. switches
C. routes
D. computers
Correct Answer:
B
Chapter: 16
Q540:
In WAN modeling, what do edges represent?
A. packet flows
B. computer connections
C. switch links
D. packet headers
Correct Answer:
C