Neco 2017 Computer Studies Question 7

Practice essay / theory question 7 from the 2017 Neco Computer Studies examination. This question covers Network Topologies, Internet, Subnetting .

Neco 2017 Computer Studies Essay / Theory
Topics: Network Topologies Internet Subnetting
Question 7 NECO • 2017 • COMPUTER_STUDIES • essay

A secondary school is planning to set up a computer network to connect its computer laboratory, administrative office, and library. The school wants to use a topology that minimises cable length while allowing any single computer to communicate with any other without interruption if one link fails.

Question Parts

( a )
Identify the most suitable network topology for the school and give two reasons to support your choice.
( b )
The laboratory contains 20 computers, the office 5 computers and the library 8 computers. Assuming the Star topology is adopted and a single central switch is used, state the minimum number of cable segments required to interconnect all computers to the switch.
( c )
The school has been allocated the IPv4 block 192.168.10.0/24. Propose a subnetting scheme that gives a separate subnet for each department (lab, office, library) using the smallest possible subnets that can accommodate the required number of hosts. For each subnet, state the network address, broadcast address and the range of usable host addresses.
( d )
Explain how the chosen Star topology together with the above subnetting scheme helps to isolate broadcast traffic and improve overall network performance.

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About This Question

This is Neco 2017 Computer Studies Question 7. It is one of the essay questions from the 2017 Neco Computer Studies examination.

The question covers Network Topologies, Internet, Subnetting .

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