Basic CS [TCS Placement]: Sample Questions 147 - 148 of 196

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Question 147

Basic CS
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Describe in Detail

Essay▾

Name the categories of multiplexing

Explanation

There are three basic forms of multiplexing:

  • Frequency Division Multiplexing (FDM) : In Frequency Division Multiplexing (FDM) multiple data signals are combined for simultaneous transmission via a shared communication medium.
  • Time Division Multiplexing (TDM) : In Time division multiplexing (TDM) two or more streaming digital signals are transmitted over a common channel.
    • Synchronous TDM
    • Asynchronous TDM or Statistical TDM
  • Wave Division Multiplexing (WDM) : In wavelength division multiplexing, (WDM) numerous data streams are modulated, i.e.. optical carrier signals of varying wavelengths (colors) of laser light, onto a single optical fiber.
Types of Multiplexing

Question 148

Basic CS

Describe in Detail

Essay▾

Explain rule

Explanation

  • The rule is a guideline for design of shared Ethernet networks for optimal traffic flow- refers to the number of repeaters and segments present on shared Ethernet backbones for tree topology.
  • It means that between any two points on the network, there can be no more than five network segments or four repeaters, and of those five segments only three of segments can be populated.
  • The rule comes because each repeater and segment adds a delay in the process and Ethernet protocol dictates that packets reach every part on its path toward its destination within a specified length of time.
  • mbps Ethernet could be used on no more than network segments, repeaters, and no more than of the five network segments can be for end users.
Given the Image is Define the Ethernet 5 - 4-3 Rule

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