Basic CS-Networks [Honeywell Placement]: Sample Questions 1 - 3 of 4

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Question 1

Networks
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Short Answer▾

Why networks are layered?

Explanation

  • Networks are layered because there are advantages of it.
  • When a system is visualized in layers then u are free to make changes in any one layer and be assured that other layers are not affected.
  • It makes troubleshooting simple.
  • Layered models give a general idea of the functions of the layers giving freedom to vendors to bring in their own innovation otherwise the whole system can be monopolised by a single vendor.

Question 2

Networks
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Short Answer▾

What is the advantage of ring network?

Explanation

  1. This type of network topology is very organized. Each node gets to send the data when it receives an empty token. This helps to reduces chances of collision. Also in ring topology all the traffic flows in only one direction at very high speed. ‎
  2. When the load on network increases, its performance is better than that of Bustopology.
  3. There is no need for network server to control the connectivity between workstations.
  4. Additional components do not affect the performance of network.
  5. Each computer has equal access to resources.

Question 3

Networks
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Short Answer▾

Which protocol is used in Ethernet? Explain it in detail.

Explanation

  • The Ethernet is a local area network (LAN) set of protocols which serves the physical and data link layers. Ethernet utilizes a linear bus or star topology. Ethernet served as the basis for the IEEE 802.3 standard.
  • Ethernet uses CSMA/CD when transmitting packets. The Carrier Sense Multiple Access with Collision Detection (CSMA/CD) is an algorithm, for transmitting and receiving packets over a common network hardware medium, by aiding in avoiding transmission collisions. The network is checked for other transmissions; when the way is clear, the computer transmissions can begin. If a collision is detected the packet is retransmitted later.
  • Address resolution protocol (ARP) is a TCP/IP protocol used to map IP network addresses to a hardware interface physical addresses.
  • Reverse address resolution protocol (RARP) is a TCP/IP protocol used to map hardware interface physical addresses to IP network addresses.

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