Basic CS-Networks [3i Infotech Placement]: Sample Questions 72 - 74 of 90

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Question 72

Networks
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Short Answer▾

In which layer are routers used

Explanation

Router Used in Network Layer
  • A router is a specialized networking device moving data from one network to another operating at the network layer.
  • Router connects networks together but at the same time keeps broadcast traffic under control.

Question 73

Networks
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What is virtual path?

Explanation

  • Virtual path is a virtual channel beam providing semi-permanent connections.
  • It provides a data communication identifier to uniquely identify a network path allowing an asynchronous transfer mode cell packet to reach its destination node.
  • Virtual path identifiers are composed of 8 - 16 bit numeric headers in ATM cell packets.
  • Virtual path connection are concatenation of one or more virtual paths.
  • Virtual path headers tell the switches where to route the packet.

Question 74

Networks
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Short Answer▾

What is mesh network?

Explanation

  • Connects network nodes, computer and other devices directly with each another.
  • In true mesh topology, every node is connected to every other node.
  • Commonly used in wireless networks.
  • Flooding or routing technique is used in mesh topology.

    Advantages:

  • Data can be transmitted from different devices simultaneously.
  • Even if one of the components fails there is an alternative route to get to other computers
  • Expansion and modification in topology can be done without disrupting other nodes.

    Disadvantages:

  • Expensive to provide so much redundancy in network connections.

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