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CBSE AISSCE 2016-2017 Marking Scheme for Computer Science
(Sub Code: 083 Paper Code 91 Outside Delhi)

Shortest distances between various blocks/locations:

Admin Block to Account Block 300 Metres
Accounts Block to Training Block 150 Metres
Admin Block to Training Block 200 Metres
MUMBAI Head Office to CHENNAI Office 1300 KM
Number of computers installed at various blocks are as follows:
Training Block 150
Accounts Block 30
Admin Block 40

(i) Suggest the most appropriate block/​location to house the SERVER in the CHENNAI 1
Office (out of the 3 blocks) to get the best and effective connectivity. Justify
your answer.

Ans Training Block - Because it has maximum number of computers.

(½ Mark for correct Block/location)
(½ Mark for valid justification)

(ii) Suggest the best wired medium and draw the cable layout (Block to Block) to 1
efficiently connect various blocks within the CHENNAI office compound.

Ans Best wired medium: Optical Fibre OR CAT5 OR CAT6 OR CAT7 OR CAT8
OR Ethernet Cable

(½ Mark for writing best wired medium)
(½ Mark for drawing the layout correctly)

(iii) Suggest a device/software and its placement that would provide data 1
security for the entire network of the CHENNAI office.

Ans Firewall - Placed with the server at the Training Block
OR
Any other valid device/software name

(½ Mark for writing device/software name correctly)
(½ Mark for writing correct placement)

(iv) Suggest a device and the protocol that shall be needed to provide wireless 1
Internet access to all smartphone/laptop users in the CHENNAI office

Ans Device Name: WiFi Router OR WiMax OR RF Router OR Wireless Modem OR RF
Transmitter

Protocol : ​ WAP OR 802.16 OR TCP/IP OR VOIP OR MACP OR 802.11

(Full 1 Mark for either writing correct writing device name OR writing correct
protocol )

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