Basic CS-Networks [3i Infotech Placement]: Sample Questions 21 - 22 of 90

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Question 21

Networks
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Describe in Detail

Essay▾

What are the two types of transmission technology available?

Explanation

Bellow the two types of transmission technology:

  1. Broadcast network
  2. Point to point network
Two Types of Transmission Technology

Broadcast network:

  • Single communication channel is shared or used by all the machines on the network.
  • Short messages called packets sent by any machine are received by all the others.
  • Broadcast systems also support transmission to a subset of the machines known as multicasting.
  • Upon receiving a packet, a machine checks the address field.
  • If the packet is addressed to it than the packet is processed, otherwise the packet is ignored.

Point to point network:

  • Such networks consist of many connections between individual pairs of machines.
  • Packets on these networks traverse all intermediate computers before they reach the desired computer.
  • Packets can take different routes if a particular route is congested.
  • Packets can follow multiple routes of different lengths.
  • Routing algorithms are very important in the point to point networks.

Question 22

Networks
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Describe in Detail

Essay▾

What is traffic shaping?

Explanation

Define Traffic Shapping
  • Also known as packet shaping.
  • The practice of regulating network data transfer to assure a certain level of performance, quality of service or return on investment.
  • Attempts to normalize traffic peaks and bursts to prioritize certain flows over others.
  • Tries to get around physical limitation on amount of data which can be buffered by prioritizing traffic.
  • Prioritizes traffic whose potential loss is less disadvantageous- by user ID, IP, host name, or application
  • Prioritization of business over non-critical traffic and the certain of tiered service level.
  • Applied both at the network level and the application level.

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