[Solved] What role does a MAC address play in local network communication? — Ans: It uniquely identifies a device on the local network segment | Computer Networks

Computer Networks - Physical and Data Link Layer

What role does a MAC address play in local network communication?

AIt routes packets between different networks

BIt assigns IP addresses to devices

CIt encrypts data packets for security

DIt uniquely identifies a device on the local network segment

Step-by-Step Solution

Solution:

Step 1: Understand MAC address function
MAC addresses are hardware identifiers used to uniquely identify devices on the same local network segment.
Step 2: Differentiate from IP addresses
IP addresses handle routing between networks, while MAC addresses operate at the data link layer for local delivery.
Final Answer:
It uniquely identifies a device on the local network segment -> Option D
Quick Check:
MAC = local device ID [OK]

Quick Trick: MAC addresses identify devices locally, not globally [OK]

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What role does a MAC address play in local network communication?