COMPUTER NETWORKING

INTRODUCTION

PROTOCOL LAYERING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Hub, Modem are devices for which layer?
A
responsible for final transmission of digital data bits from the Physical layer of the sending (source) device over network communications media to the Physical layer of the receiving (destination) device.
B
checks for physical transmission errors and packages bits into data “frames".
C
support routing
D
manages the sequence and flow
Explanation: 

Detailed explanation-1: -The physical layer is responsible for encoding bits onto a transmission medium. The data link layer is responsible for delivery of information across a single link. The network layer is responsible for delivery of information between different machines on the internet.

Detailed explanation-2: -1) Physical layer The main functionality of the physical layer is to transmit the individual bits from one node to another node.

Detailed explanation-3: -The transport layer Layer 4 is responsible for end-to-end communication between the two devices.

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