CBSE Class 12 Informatics Practices Question Paper 2011 (Set 2)

Solve 2011 CBSE : Informatics Practices question paper Set 2

1. (a) Ms. Taufiq Ahmed wants to prevent unauthorized access to/from his company's local area network. Write the name of a system (software/hardware), which he should install to do the same. 1

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(b) Beauty Lines Fashion Inc. is a fashion company with design unit and market unit 135 meters away from each other. The company recently conneted their LANs, they are not able to share the information due to loss of signal in between. Which device out of the following should you suggest to be installed for a smooth communication ? 1

(i) UPS

(ii) Modem

(iii) Repeater

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(c) Which of the following is not a feature of networking ? 1

(i) Resource sharing

(ii) Uninterrrupted power supply

(iii) Reduced cost

(iv) Reliability

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(d) Name any two Indian scripts included in Unicode. 1

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(e) Mr. Jayanto Das is confused between Shareware and Open source software. Mention at least two points of differences to help her understand the same. 2

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(f) Identify the type of Topology from the following : 2

(i) If each node is conneted with the help of independent. cable with the help of a central switching (communication controller)

(ii) If each node is connected with the help of a single co-axial cable.

(g) Define the following with reference to Threats to Network Security. 2

(i) Trojan Horse

(ii) Worm

CBSE Class 12 Informatics Practices Question Paper 2011 (Set 2)