Paper 1 · Teaching Aptitude
UGC NET December 2023 (11.12.2023) Shift-I
A Media Access Control (MAC) address refers to a number that uniquely identifies a device on a network and is usually made up of ______ bits.
A16
B32
C48 ✓ Correct
D128
Correct answer: (C) 48 — A MAC address is made up of 48 bits, so the answer is 48.
Explanation
★A MAC address is made up of 48 bits, so the answer is 48.
★A MAC address uniquely identifies a device on a network.
★It is assigned to the network interface card by the manufacturer.
★It is a 12 character hexadecimal identifier.
★Each hex character stands for 4 bits, so 12 characters make 48 bits.
★So a MAC address is a 48 bit address.
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