Basic CS-Networks [TCS Placement]: Sample Questions 14 - 16 of 133

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Question 14

Networks
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Write in Short

Short Answer▾

Name the factors that affect the reliability of the network

Explanation

The reliability of the network is measured by following factors:

  1. Frequency of Failure: Determines how frequently the network fails.
  2. Recovery Time: It is the time taken by a device or network to recover from the failure.
  3. Catastrophe: Network must be protected from the disasters such as fire, earthquake, and floods.

Question 15

Networks
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Describe in Detail

Essay▾

List the steps involved in creating the checksum.

Explanation

  • Step 1: The unit is divided into k sections, each of n bits.
  • Step 2: All sections are added using one՚s complement to get the sum in such a way that the total is also ‘n’ bits long
  • Step 3: Sum is then complemented.
  • Step 4: If the result is zero, the data is accepted, otherwise it is rejected.
The Checksum

Question 16

Networks
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Describe in Detail

Essay▾

What is a node?

Explanation

  • A network consists of two or more computers directly connected by physical medium such as coaxial cable or optical fiber- physical medium is called links and the devices it connects are called nodes.
  • A node is thus any active, physical, electronic device attached to a network- devices then become capable of sending, receiving, or forwarding information sometimes a combination of the three.
  • Examples of nodes include bridges, switches, hubs, and modems to other computers, printers, and servers.
  • One of the most common forms of a node is a host computer often referred to as an Internet node.
Given the Image is Define the Nodes in Example

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