Computer Networks MCQs with Answers
Practice important Computer Networks MCQs with answers and explanations.
Chapter: 10
Q361:
What does IEEE 802.2 LLC add to Ethernet frames?
A. Logical Link Control and SNAP headers
B. Error checking
C. Encryption
D. Compression
Correct Answer:
A
Chapter: 10
Q362:
What does SNAP stand for?
A. Subnetwork Access Protocol
B. Subnetwork Attachment Point
C. Secure Network Access
D. Standard Network Addressing
Correct Answer:
B
Chapter: 10
Q363:
When a frame type is unknown to the receiver, it:
A. Processes the frame
B. Discards the frame
C. Forwards the frame
D. Requests retransmission
Correct Answer:
B
Chapter: 10
Q364:
A network analyzer is used to:
A. Debug network performance
B. Send broadcast frames
C. Encrypt frames
D. Increase CPU efficiency
Correct Answer:
A
Chapter: 10
Q365:
Network interface cards in promiscuous mode:
A. Receive only their own frames
B. Receive all frames on the LAN
C. Discard unknown frames
D. Encrypt traffic
Correct Answer:
B
Chapter: 10
Q366:
Network analyzers can filter captured frames based on:
A. Source or destination address
B. Frame size
C. Type of frame
D. All of the above
Correct Answer:
D
Chapter: 10
Q367:
Multicasting reduces CPU usage by:
A. Forwarding frames to all devices
B. Restricting frames to selected addresses
C. Not forwarding any frames
D. Increasing network traffic
Correct Answer:
B
Chapter: 10
Q368:
The broadcast address in Ethernet frames is used to:
A. Send frames to all nodes
B. Send frames to one node
C. Send error messages
D. Send acknowledgements
Correct Answer:
A
Chapter: 10
Q369:
Which of the following is NOT accepted by multicast programmed interface hardware?
A. Multicast frames
B. Broadcast frames
C. Frames destined to the station itself
D. Frames destined to unrelated stations
Correct Answer:
D
Chapter: 10
Q370:
The source address field in Ethernet frames contains:
A. The sender's hardware address
B. The intended receiver's address
C. The type of data
D. The CRC code
Correct Answer:
A
Chapter: 10
Q371:
What does the frame type field indicate?
A. Type of data carried
B. Length of payload
C. Source address
D. Destination address
Correct Answer:
A
Chapter: 10
Q372:
In a network, what happens to frames with unknown types?
A. They are discarded
B. They are processed
C. They are forwarded
D. They are logged for later
Correct Answer:
A
Chapter: 10
Q373:
Why encode data type in the data area for LANs without a type field?
A. To support only one data format
B. To support multiple data formats
C. To increase frame size
D. To reduce error rates
Correct Answer:
B
Chapter: 10
Q374:
Which protocol is widely used for logical link control in Ethernet?
A. IEEE 802.2 LLC
B. IEEE 802.3
C. TCP
D. IP
Correct Answer:
A
Chapter: 11
Q375:
LAN data transmission speeds are typically ______ relative to CPU speeds.
A. slow
B. fast
C. the same
D. unknown
Correct Answer:
B
Chapter: 11
Q376:
LAN speeds are defined independent of specific ______ speeds.
A. CPU
B. network
C. software
D. memory
Correct Answer:
A
Chapter: 11
Q377:
Which hardware component connects a computer system to a network?
A. Network Interface Card
B. CPU
C. Hard Drive
D. RAM
Correct Answer:
A
Chapter: 11
Q378:
The connector on the Network Interface Card (NIC) accepts the ______ to the physical network.
A. power cable
B. data cable
C. network cable
D. USB cable
Correct Answer:
C
Chapter: 11
Q379:
NIC stands for:
A. Network Interface Card
B. Network Internet Connector
C. Network Internal Chip
D. Network Input Control
Correct Answer:
A
Chapter: 11
Q380:
Can an Ethernet NIC be used with a token ring network?
A. Yes
B. No
C. Only with adapter
D. Only if software supports
Correct Answer:
B