How many bits are used to define a single unique physical MAC address etched onto a network interface card (NIC)? MCQ with Answer and Explanation

Question
How many bits are used to define a single unique physical MAC address etched onto a network interface card (NIC)?
A. 64 bits
B. 32 bits
C. 48 bits
D. 128 bits
Answer: Option C
Solution (By JKSSB Mock Tests)
A MAC (Media Access Control) address is a 48-bit (6-byte) permanent hardware identifier represented in hexadecimal notation.
This question belongs to: Computer Computer Networking
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Practice More Computer Networking Questions

Question #1
Which network protocol automatically assigns IP address leases and gateway configuration paths to client devices when they boot up?
A. ARP
B. DHCP
C. ICMP
D. NAT
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Correct Answer: Option B

Explanation:
DHCP dynamically manages network configuration parameters, automatically assigning IP leases to devices when they connect to the network.
This question belongs to: Computer Computer Networking
Question #2
What is the structural network layout where every node is connected to a central cable line, which acts as the shared communication trunk?
A. Star Topology
B. Bus Topology
C. Mesh Topology
D. Ring Topology
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Correct Answer: Option B

Explanation:
Bus topology connects all devices to a single shared central cable, known as the bus or backbone line.
This question belongs to: Computer Computer Networking
Question #3
What structural advantage does a full Mesh Topology layout offer compared to alternative network configurations?
A. It can operate without network interface cards.
B. It minimizes physical cabling costs.
C. It provides maximum fault tolerance and reliability by establishing direct redundant connections between all nodes.
D. It removes the requirement for hardware MAC profiles.
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Correct Answer: Option C

Explanation:
Because a full mesh topology links every device directly to every other device, a failed line can be easily bypassed using alternative redundant paths.
This question belongs to: Computer Computer Networking
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