CBSE Guess > Papers > Important Questions > Class XII > 2013 > Computer Science > Computer Science - by Mr. Sandip Kumar Srivastava

CBSE CLASS XII

Computer Science (C++ and Data Structure)

66.

1. Define the term Bandwidth. Give any one unit of Bandwidth.
2. Which of the following is not a Client Side script:
   i. VB Script
   ii. Java Script
   iii. ASP
   iv. PHP
3. What is a topology?  Write short note on Bus topology.
4. Expand the following terms with respect to Networking:
   (i) PPP (ii) GSM   (iii) HTTP (iv) XML
5. Knowledge Supplement Organization has set up its new center at Mangalore for its office and web based activities. It has 4 blocks of buildings as shown in the diagram below:

Center to center distances between various blocks

Number of Computers

1. Suggest a cable layout of connections between the blocks.
2. Suggest the most suitable place (i.e. block) to house the server of this organization with a suitable reason.
3. Suggest the placement of the following devices with justification
   a. Repeater
   b. Hub/Switch
   
4. The organization is planning to link its front office situated in the city in a hilly region where cable connection is not feasible, suggest an economic way to connect it with reasonably high speed?

67.

1. Write one advantage and disadvantage of Bus Topology.
2. Expand the following terms with respect to Networking.
   i. WLL
   ii. PHP
3. Differentiate between Freeware and shareware?
4. What are Cookies?
5. Differentiate between Hackers and Crackers?
6. What is FTP?
7. “Kanganalay Cosmetics” is planning to start their offices in four major cities in Uttar Pradesh to provide cosmetic product support in its retail fields. The company has planned to set up their offices in Lucknow at three different locations and have named them as “Head office”, “Sales office”, & “Prod office”. The company’s regional offices are located at Varanasi, Kanpur & Saharanpur. A rough layout of the same is as follows:
   
   An approximate distance between these offices as per network survey team is as follows:

Number of computers:

1. Suggest the placement of the repeater with justification.
2. Name the branch where the server should be installed. Justify your answer.
3. Suggest the device to be procured by the company for connecting all the computers within each of its offices out of the following devices
   a. Modem
   b. Telephone
   c. Switch/Hub
4. The company is planning to link its head office situated in Lucknow with the office at Saharanpur. Suggest an economic way to connect it; the company is ready to compromise on the speed of connectivity. Justify your answer.

68.

1. Write two application of Cyber Law.
2. Write the following abbreviations in their full form:
   FTP, WWW
3. Name the device used to connect a computer to an analog telephone line.
4. Mention any two advantages of Open Source Software over Proprietary Software.
5. ABC SWITCHGEARS LTD. In Srinagar is setting up the network between its different departments located in different wings. There are 4 wings named as Manufacturing(M), Research(R), Administration (A) and Personnel (P).

Distance between various wings are given below:

Number of computers

1. Suggest a suitable topology for networking the computers of all wings.
2. Name the wing where the server is to be installed. Justify your answer.
3. Suggest the placement of Hub/Switch in the network.
4. Mention the economic technology to provide accessibility to all wings.
5. What do you mean by Firewall?
   

Submitted By : Mr. Sandip Kumar Srivastava
Email : [email protected]