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Network+ Guide to Networks (MindTa...

8th Edition
Jill West + 2 others
Publisher: Cengage Learning
ISBN: 9781337569330

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Chapter
Section
BuyFindarrow_forward

Network+ Guide to Networks (MindTa...

8th Edition
Jill West + 2 others
Publisher: Cengage Learning
ISBN: 9781337569330
Chapter 3, Problem 1RQ
Textbook Problem
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Which part of a MAC address is unique to each manufacturer?

  1. a. The network identifier
  2. b. The OUI
  3. c. The device identifier
  4. d. The physical address

Program Description Answer

OUI of MAC address is unique.

Hence, the correct answer is option “B”.

Explanation of Solution

The OUI:

  • • OUI in networking stands for Organizationally Unique Identifier.
  • • It is the memory of first 24 bits of a Media Access Control (MAC) address that is used for identifying a vendor uniquely.
  • • It is the first three parts of 8bits each used for data communication in computing.
  • • It is used in finding the Network Interface Controller (NIC) manufacturer.

Explanation for incorrect options:

The network identifier:

The network identifier is used for finding the computers or devices present on any local network or intranet.

Hence, the option “A” is wrong.

The device identifier:

The device identifier is used for categorizing the devices.

Hence, the option “C” is wrong.

The physical address:

A physical address is used for defining and understanding a cell which is related to main memory.

Hence, the option “D” is wrong.

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