Subject

Computer and Communication Technology

Class

CBSE Class 12

Pre Boards

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Sample Papers

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 Multiple Choice QuestionsShort Answer Type

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31.

What is Worm? How is it removed?


A worm is a self-replicating computer program. It uses a network to send copies of itself to other computers on the network and it may do so without any user intervention. Most of the common anti-virus(anti-worm) remove the worm.

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32.

Perfect Edu Services Ltd. is an educational organization. It is planning to setup its India campus at Chennai with its head office at Delhi. The Chennai campus has 4 main buildings – ADMIN, ENGINEERING, BUSINESS and MEDIA.
You as a network expert have to suggest the best network related solutions for their problems raised in (i) to (iv), keeping in mind the distances between the buildings and other given parameters.

Shortest distances between various buildings:

ADMIN to ENGINEERING 55 m
ADMIN to BUSINESS 90 m
ADMIN to MEDIA 50 m
ENGINEERING to BUSINESS 55
ENGINEERING to MEDIA 50 m
BUSINESS to MEDIA 45m
DELHI Head Office to CHENNAI Campus 2175 km

Number of Computers installed at various buildings are as follows:

ADMIN 110
ENGINEERING 75
BUSINESS 40
MEDIA 12
DELHI Head Office 20

(i) Suggest the most appropriate location of the server inside the CHENNAI campus (out of the 4 buildings), to get the best connectivity for maximum no. of computers. Justify your answer. 1
(ii) Suggest and draw the cable layout to efficiently connect various buildings within the CHENNAI campus for connecting the computers.
(iii) Which hardware device will you suggest to be procured by the company to be installed to protect and control the internet uses within the campus?
(iv) Which of the following will you suggest to establish the online face-to-face communication between the people in the Admin Office of CHENNAI campus and DELHI Head Office?
(a) Cable TV
(b) Email
(c) Video Conferencing
(d) Text Chat

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