Computer Networks MCQs with Answers
Practice important Computer Networks MCQs with answers and explanations.
Chapter: 36
Q1121:
In TCP, the sequence number is ________ bits long.
A. 32
B. 16
C. 64
D. 8
Correct Answer:
A
Chapter: 36
Q1122:
TCP retransmission is triggered by ________.
A. timeout
B. sequence number checksum
C. window size
D. packet loss
Correct Answer:
A
Chapter: 36
Q1123:
TCP flow control helps to avoid ________.
A. buffer overflow
B. packet loss
C. low throughput
D. packet duplication
Correct Answer:
A
Chapter: 36
Q1124:
The retransmission timer interval is adapted to match ________.
A. network conditions
B. buffer size
C. packet size
D. window advertisement
Correct Answer:
A
Chapter: 36
Q1125:
TCP uses acknowledgements to ensure ________.
A. reliable data delivery
B. faster transmission
C. packet encryption
D. network routing
Correct Answer:
A
Chapter: 36
Q1126:
If the acknowledgement does not arrive in time, TCP ________.
A. retransmits the data
B. terminates the connection
C. ignores the packet
D. drops the connection
Correct Answer:
A
Chapter: 36
Q1127:
TCP connection startup requires exchange of ________.
A. sequence numbers
B. encryption keys
C. buffer sizes
D. window sizes
Correct Answer:
A
Chapter: 36
Q1128:
The window advertisement is sent by the ________.
A. receiver
B. sender
C. router
D. switch
Correct Answer:
B
Chapter: 36
Q1129:
TCP retransmission ensures data is not ________.
A. lost
B. encrypted
C. compressed
D. duplicated
Correct Answer:
A
Chapter: 36
Q1130:
TCP flow control is necessary because of varying ________.
A. buffer sizes
B. application speeds
C. network speeds
D. packet types
Correct Answer:
A
Chapter: 36
Q1131:
The goal of congestion control is to avoid adding ________ to an already congested network.
A. retransmissions
B. delays
C. errors
D. routing loops
Correct Answer:
A
Chapter: 36
Q1132:
Congestion control reduces the ________ quickly in response to lost messages.
A. buffer size
B. window size
C. packet size
D. segment size
Correct Answer:
B
Chapter: 36
Q1133:
In congestion control, it is assumed that packet loss is due to ________.
A. congestion
B. link failure
C. security attack
D. packet corruption
Correct Answer:
A
Chapter: 36
Q1134:
If congestion control is not done carefully, the network may ________.
A. swing wildly between congestion and under utilization
B. remain stable
C. increase speed
D. drop packets only
Correct Answer:
A
Chapter: 36
Q1135:
TCP uses the term ________ to refer to a message sent between machines.
A. packet
B. segment
C. frame
D. datagram
Correct Answer:
B
Chapter: 36
Q1136:
Network Address Translation (NAT) was motivated by the exhaustion of ________.
A. IP address space
B. MAC address space
C. DNS entries
D. IPv6 addresses
Correct Answer:
A
Chapter: 36
Q1137:
NAT allows multiple computers to share a ________ IP address.
A. private
B. unique
C. global
D. subscribed
Correct Answer:
C
Chapter: 36
Q1138:
NAT requires a device that performs ________ translation.
A. packet
B. address
C. port
D. data
Correct Answer:
B
Chapter: 36
Q1139:
Implementations of NAT can be found in ________.
A. stand-alone hardware devices
B. IP routers with NAT embedded
C. firewalls
D. both A and B
Correct Answer:
D
Chapter: 36
Q1140:
A site with more than one computer obtains a single valid ________ address.
A. private
B. global
C. loopback
D. multicast
Correct Answer:
B