Computer Networking MCQs

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Computer Networking MCQs

Practice Computer Networking MCQs covering LAN, MAN, WAN, PAN, topology, modem, router, hub, switch and IP address concepts.

325
Total Questions

Practice Questions

Page 17 of 17
Question #321
What layer of the OSI model does a network Router operate within to make forwarding choices based on logical destination IP addresses?
A. Transport Layer (Layer 4)
B. Physical Layer (Layer 1)
C. Network Layer (Layer 3)
D. Data Link Layer (Layer 2)

Correct Answer: Option C


Explanation:
Routers operate at the Network Layer (Layer 3), analyzing logical IP addresses to forward data packets across separate networks.

This question belongs to: Computer Computer Networking
Question #322
Which networking utility uses ICMP packets to verify if a remote destination host is online and record round-trip latency metrics?
A. IPCONFIG
B. TRACERT
C. PING
D. NSLOOKUP

Correct Answer: Option C


Explanation:
The ping command uses ICMP Echo Request and Echo Reply packets to test basic network connectivity and measure latency.

This question belongs to: Computer Computer Networking
Question #323
What condition happens on a shared network segment if multiple stations transmit electrical signals simultaneously, causing data frames to collide and warp?
A. Data Collision
B. Automatic loopback routing
C. Signal termination bypass
D. MAC address duplication

Correct Answer: Option A


Explanation:
Data collisions occur when multiple devices transmit signals over a shared medium simultaneously, garbling the data frames.

This question belongs to: Computer Computer Networking
Question #324
Which address space can be used by any network client to check the internal functionality of its own local TCP/IP network software stack?
A. 0.0.0.0
B. 192.168.1.1
C. 127.0.0.1
D. 255.255.255.255

Correct Answer: Option C


Explanation:
127.0.0.1 is the standard loopback address. It lets a device route diagnostic traffic back through its internal software layer without hitting physical network lines.

This question belongs to: Computer Computer Networking
Question #325
What happens on a shared data network using a Bus Topology layout if a data frame reaches either extreme physical endpoint without encountering a terminator component?
A. The data frame is safely archived on the primary server.
B. The signal transforms into an analog wave profile.
C. The data frame loops back through the local host interface automatically.
D. The signal bounces back along the cable, creating interference that corrupts ongoing network traffic.

Correct Answer: Option D


Explanation:
Without a terminator to absorb signals at the endpoints of a bus network, signal bounce creates interference that corrupts data traffic.

This question belongs to: Computer Computer Networking