Network+ Guide to Networks (MindTap Course List)
8th Edition
ISBN: 9781337569330
Author: Jill West, Tamara Dean, Jean Andrews
Publisher: Cengage Learning
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Expert Solution & Answer
Chapter 6, Problem 1RQ
<PROGRAM-DESCRIPTION-ANSWER>
Wired and wireless transmission shares the same protocol in the network layer of OSI model.
Hence, the correct answer is option “B”.
</PROGRAM-DESCRIPTION-ANSWER>
Explanation of Solution
Layer 3: Network layer
- It is the third level of the Open System Interconnection Model (OSI Model).
- Network layer performs the routing of packet from source to destination.
- For routing, it converts the data into packets, and after reaching the destination, it converts back to the data.
- The primary responsibilities of this layer are to set up a logical connection, data forwarding, routing, and error reporting.
Explanation for incorrect options:
Layer 4: Transport layer
- Its purpose is to provide the reliable transfer of data between two processes in the computer.
- This layer ensures the error-free delivery, no loss of data, and duplication.
Hence, option “A” is wrong.
Layer 2: Data link layer
- It makes the transmission of data reliable, which is provided by the physical layer.
- For reliable transfer, it divides the data into data frames and transmits through the communication channel.
- At the destination, it checks for the transmission error and sends the acknowledgement to the source.
Hence, option “C” is wrong.
Layer 1: Physical layer
- It is concerned with how raw data bits are transmitted from one system to another over a physical communication line.
- It describes the physical and electrical specifications for device.
Hence, option “D” is wrong.
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Chapter 6 Solutions
Network+ Guide to Networks (MindTap Course List)
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