COMPUTER NETWORKING

PHYSICAL LAYER AND TRANSMISSION MEDIA

INTRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are TRUE about the Physical Layer?Select 3 from the options.
A
Accepts frame from the Data Link layer and encodes it as a series of signals to transmit
B
Transports bits across the network media
C
It is the 2nd layer in the OSI reference model
D
It is the 1st layer in the OSI reference model
Explanation: 

Detailed explanation-1: -The physical layer is the first and lowest layer of the Open System Interconnection Model (OSI Model.) The physical layer (also known as layer 1) deals with bit-level transmission between different devices and supports electrical or mechanical interfaces connecting to the physical medium for synchronized communication.

Detailed explanation-2: -Physical Layer It defines the connector, the electrical cable or wireless technology connecting the devices, and is responsible for transmission of the raw data, which is simply a series of 0s and 1s, while taking care of bit rate control.

There is 1 question to complete.