This Computer Network-Physical Layer Online Test helps you to Boost your Knowledge in Computer Network. In this test, we will cover the topics in the form of questions.
The physical layer is the important and second layer of the OSI model. It mainly deals with the physical connectivity of two different stations.
This layer defines the hardware parts such as cabling, wiring. The physical layer provides the services to the data link layer and data link layer hands frame to the physical layer and physical layer converts frames into electromagnetic signals.
The physical layer sometimes plays an important role in the effective sharing of available communication resources.
The physical layer provides the services are-
(1). It converts the signal from one form to another form so that it is physically transmitted over the communication medium.
(2). Line coding, which allows data to send by the hardware device.
(3). Bit-by-bit delivery.
(4). Transmission mode control.