DATA LINK LAYER WIRED NETWORKS
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Asynchronous
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Synchronous
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Both
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none
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Detailed explanation-1: -There are only two types of modems on the basis of transmission mode, and they are Synchronous and Asynchronous modems. Synchronous modem: Synchronous communications work by using a protocol to regulate the data.
Detailed explanation-2: -A modem is a device or program that enables a computer to transmit data over, for example, telephone or cable lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves.
Detailed explanation-3: -DSL are used for transmission of the digital data over telephone lines. These modems offer high-speed internet connection through telephone lines. Two types of DSL modem include asymmetric and symmetric DSL that use existing telephone wiring within your home wiring.