12th CBSE Computer Science Communication Technologies Important Question Paper | QB365

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12th CBSE Computer Science Communication Technologies Important Question Paper

Published on: 30/11/2018

These papers have been created with the sole purpose of helping the students with their preparations. We hope that these sample papers will help you prepare better for your exams and help you fine-tune your strategies for the board exams.

In this question paper, questions are covered from the chapter Communication Technologies and questions are prepared as per NCERT guidelines. Questions are covered from NCERT solutions and NCERT Exemplar.

The latest sample papers have been designed as per the latest blueprints, syllabus and examination trends. Sample papers should be practiced in examination condition at home or school and also show it to your teachers for checking or compare with the answers provided.

Download CBSE Class 12th Standard CBSE Computer Science question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Computer Science

Questions + Answers key

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Std: 12th Standard CBSE - Computer Science

chapter: - Model Question paper

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Questions:

Fill up / 1 Marks

14 x 1 = 14

Give the full form of the following terms:
(i) XML
(ii) FLOSS
(iii) HTTP
(iv) FTP

Name one commonly used open source internet browser and one commonly used open source operating system.

Give one suitable example of each URL and domain name.

What is the difference between domain name and IP address?

What do you mean by spam mails? How can you protect your mailbox from spams?

How is a hacker different from a cracker?

What are cookies?

What is voip?

Which out of the following does not come under cyber crime?

(i) Stealing a mouse from someone's computer.

(ii) Operating someone's internet banking account, without his knowledge.

(iii) Entering in someone's computer remotely and copying data, without seeking his permission.

10.

Which of the following crime(s) is/are covered under cyber crime?

(i) stealing brand new hard disk a shop.

(ii) getting into unknown person's social networking account and start messaging on his behalf .

(iii) Copying some important data from a computer without taking permission from the owner of the data.

11.

Expand the following abbreviations:

(i) HTTP (ii) ARPANET

12.

Name any two components required for networking.

13.

Write one advantage of star topology of network? Also, illustrate how five computers can be connected with each other using star topology of ntework

14.

Which of the network (out of LAN, PAN and MAN) is formed, When you connect two mobiles using Bluetooth to transfer a picture file?

Generic 4

1 x 4 = 4

15.

Trine Tech Corporation (TTC) is a professional consultancy company. the company is planning to set up their offices in India with its hub at Hyderabad. As a network advisor, you have to understand their requirement and suggest them the best available solutions. Their queries are mentioned as (i) to (iv) below.
Block to block distance(in m)

Block (From)	Block(To)	Distance
Human Resource	Conference	110
Human Resource	Finance	40
Conference	Finance	80

Expected number of computers to be in each block

Block	Computers
Human Resource	25
Finance	120
Conference	90

(i) Which will be the most appropriate block, where TTC should plan to install their server?
(ii) Draw a block to block cable layout to connect all the building in the most appropriate manner for efficient communication.
(iii) What will be the best possible connectivity out of the following, you will suggest to connect the new setup of offices in Bangalore with its London based office.

Satellite link
Infrared

(iv) Which of the following device will be suggested by you to connect each computer in each of the buildings?

Switch
Modem
Gateway

Generic 2

1 x 2 = 2

16.

Explain the following terms in short:
(i) DHTML
(ii) ISP

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Answers Key:

Fill up / 1 Marks

14 x 1 = 14

()
(i) XML eXtensible Markup Language'

(ii) FLOSS Free Libre and Open Source Software

(iii) HTTP HyperText Transfer Protocol

(iv) FTP File transfer Protocol.

()
Open source Internet browser - Chromium

Open source operating system - Linux

()
URL http://www.Gabsclasses.com/aboutus

Domain name www.Gabsclasses.com

()
IP address is an identifier for a computer or a device on a TCP/IP network.

e.g. 1.160.10.240 could be an IP address.

A domain name is a name that identifies one or more IP addresses.

e.g. the domain name microsoft.com represents about a dozen IP addresses.

()
Spam mails, also known as junk E-mails, is a subset of spam that involves nearly identical messages sent to numerous recipients by E-mail. We can protect our mailbox from spams by creating appropriate filters.

()
Hacker These are the persons who get unauthorised access to the websites and replace them with other websites unlawful information.

Crackers The person who uses certain software tom trap authenticated information or to crack the security codes such as usernames and password to illegally access the information of computer is called a cracker.

()
cookies are files stored temporarily on www browser's computer, which allow the www server to store persistent information associated with browsing user's system.

()
VoIP (voice over Internet Protocol) is simply the transmission of voice traffic over IP-based networks, VoIP has been around in one form or another, since 1973 when it began as an experiment by US.

()
(i) stealing a mouse from someone's computer.

10.

()
(ii) Getting into unknown person's social networking account and start messaging on his behalf.

11.

()
HTTP HyperText Transfer Protocol.

ARPANET Advanced Research projects Agency Network.

12.

()
Switch/Hub and Repeaters.

13.

()
Advantage of star topology No distribution to the network when connecting or removing devices.

Five computers can be connected with each other using server in the following way:

14.

()
When two mobiles are connected using Bluetooth to transfer a picture file, a PAN(Personal Area Network) is created.

Generic 4

1 x 4 = 4

15.

(i) TTC should install its server in finance block as it is having a maximum number of computers.
(ii) The above layout is based on maximum cable length required, which is 120 meters in the above case.
(iii) Satellite Link
(iv) Switch.

Generic 2

1 x 2 = 2

16.

(i) DHTML DHTML stands for Dynamic HyperText Markup Language. It refers to the web content that changes according to the user request. It will react the user input without sending requests to the web server.

(ii) ISP ISP stands for Internet Service Provider. It refers to the company that provides Internet Services. Some common examples of ISPs are Airtel, BSNL, Tata docomo, etc.