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Chapter 14 Networking and Open Source Concepts Solutions

Question - 11 : -
What is the difference between Packet switching and circuit switching techniques ?

Answer - 11 : -

In circuit switching, a dedicated path exists from source to destination while in packet switching, there is no fixed path.

Question - 12 : -
Write two advantages of using an optical fibre cable over an Ethernet cable to connect two service stations, which are 200 m away from each other.

Answer - 12 : -

Advantages of optical fibre :

  1. Faster speed than ethernet
  2. Lower Attenuation

Question - 13 : -
Write one advantage of bus topology of network. Also illustrate how four (4) computers can be connected with each other using bus topology of network.

Answer - 13 : -

Advantage (benefits) of Linear Bus Topology is that the cable length required for this topology is the least compared to the other networks.
Bus Topology of Network:

Question - 14 : -
Write one advantage of star topology of network ? Also, illustrate how five (5) computers can be connected with each other using star topology of network.

Answer - 14 : -

Advantage (benefits) of star toplogy:
Easy to replace, install or remove hosts or other devices.

Question - 15 : -
Identify the type of topology on the basis of the following :
(a) Since every node is directly connected to the server, a large amount of cable is needed which increases the installation cost of the network.
(b) It has a single common data path connecting all the nods.

Answer - 15 : -

(a) Star Topology
(b) Bus Topology

Question - 16 : -
Expand the following :
(a) VOIP
(b) SMTP

Answer - 16 : -

(a) Voice Over Internet Protocol
(b) Simple Mail Transfer Protocol

Question - 17 : -
Daniel has to share the data among various computers of his two offices branches situated in the same city. Name the network (out of LAN, WAN, PAN and MAN) which is being formed in this process.

Answer - 17 : -

MAN

Question - 18 : -
What is Wi-Fi Card ?

Answer - 18 : -

Wi-Fi cards are small and portable cards that allow the computer to connect to the internet through a wireless network. The transmission is through the use of radio waves.

Question - 19 : -
Explain the purpose of a router.

Answer - 19 : -

A router establishes connection between two network and it can handle network with different protocols. Using a routing table, routers make sure that the data packets are travelling through the best possible paths to reach their destination.

Question - 20 : -
Write any 1 advantage and 1 disadvantage of Bus topology.

Answer - 20 : -

Advantage : Since there is a single common data path connecting all the nodes, the bus topology uses a very short cable length which considerably reduces the installation cost. Disadvantage : Fault detection and isolation is difficult. This is because control of the network is not centralized in any particular node. If a node is faulty on the bus, detection of fault may have to be performed at many points on the network. The faulty node has then to be rectified at that connection point.

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