Case Based MCQ Questions

Computer Science - Class 12
Chapter 10 - Computer Networks

## (D) Any of these

The server should be installed in the building which has the highest number of computers as it will decrease the cabling cost for most of the computers as well as increase the efficiency of the maximum computers in the network.

Checking the options

• (A) Human resource - Number of computers is 25
• (B) Finance - Number of computers is 120
• (C) Conference - Number of computers is 90
• (D) Any of these

The finance block has the highest number of computers in the network.

So, the correct answer is (B)

## (D) Mesh topology

The star topology network is easy to install, cost effective and failure of any node on the network will not affect the remaining nodes in the network.

So, star topology is best suited for the above given network.

So, the correct answer is (B)

## (D) Wi fi

Checking the options

• (A) Satellite Link - Best suitable for very long distance communication
• (B) Infrared - Best suitable for short distance communication
• (C) Ethernet Cable - Best suitable for short distance communication
• (D) Wifi - Best suitable for long distance communication but shorter distances than satellite media

Since communication between Chennai and London is a very long distance communication, Satellite link will be used for connecting the offices in both locations.

So, the correct answer is (A)

## (D) Hub

Checking the options

• (A) Switch -  It plays a central role in a Local Area Network. It is used to connect multiple computers or communicating devices.
• (B) Modem - It is a device used for conversion between analog signals and digital bits.
• (C) Gateway -  It is a key access point that acts as a “gate” between an organisation's network and the outside world of the Internet.
• (D) Hub -  It is a network device used to connect different devices through wires.The limitation of Hub is that if data from two devices come at the same time, they will collide.

Since switch is used to connect multiple computers.

So, the correct answer is (A)

## (C) Telephone line

Checking the options

• (A) Satellite - High speed but very expensive
• (B) Lease line -  High speed but expensive
• (C) Telephone line - low speed and cost effective
• (D) Broadband - High speed and cost effective

On comparing all the 4 options, Broadband provides high-speed internet accessibility and is cost-effective.

So, the correct answer is (D)

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### Transcript

ABC is professional consultancy company. The company is planning to set up their new offices in India with its hub at Bengaluru. As a network adviser, you have to understand their requirements and suggest them the best available solutions. Their queries are mentioned as (i) to (v) below: Physical Location of the blocks of ABC. Human Resource Conference Finance Answer: The server should be installed in the building which has the highest number of computers as it will decrease the cabling cost for most of the computers as well as increase the efficiency of the maximum computers in the network. Checking the options (A) Human resource - Number of computers is 25 (B) Finance - Number of computers is 120 (C) Conference - Number of computers is 90 (D) Any of these The finance block has the highest number of computers in the network. So, the correct answer is (B)