Probable Q/As for Computer Science

Long Questions

‡  . Explain the various types of computers on the basis of size.

The digital computers that are available nowadays vary in their sizes and types. The computers are broadly classified into four categories based on their size and type

Microcomputers

Microcomputers are small, low‐cost and single‐user digital computer. They consist of CPU, input unit, output unit, storage unit and the software. Although microcomputers are stand‐alone machines, they can be connected together to create a network of computers that can serve more than one user. IBM PC based on Pentium microprocessor and Apple Macintosh are some examples of microcomputers. Microcomputers include desktop computers, notebook computers or laptop, tablet computer, handheld computer, smart phones and notebook.

Some Important Differences of Computer Science of Grade XI

Analog Computer & Digital Computer

Analog Computer	Digital Computer
The computer which is based on continuous data is known as analog computer.	The computer which is based on discrete data is known as digital computer.
It measures only physical or natural quantities such as water flow, current and voltage.	It is based on digits that are 0 and 1 or OFF and ON state.
It is used for specific purposes.	It is used for general purposes.
These computers are suited for physics and engineering.	These computers are suited for graphical works, documentation, business and industrial processes.
Has no storage or memory capacity.	Has high storage or memory capacity.
Cost is low compared to digital computers.	Cost is high compared to analog computers.
E.g.: Thermometer, Speedometer etc.	E.g.: IBM PC, MAC Book etc.

Primary & Secondary Memory

Primary Memory	Secondary Memory
Low storage capacity.	High storage capacity.
Used for short term basis.	Used for long term basis.
Also called Main memory.	Also called Auxiliary memory.
Faster than Secondary memory.	Slower than Primary memory.
It is temporary / permanent memory.	It is permanent memory.
Expensive than Secondary memory.	Cheaper than Primary memory.
E.g.: RAM, ROM etc.	E.g.: Magnetic drums, tapes, disks etc.

Computer Virus

Introduction

Computer virus is a kind of program that destroys the functioning power of computer smoothly. Viruses have many purposes-some are designed to play annoying tricks, whereas others have destructive intent.

Symptoms of Virus

Chapter Internet and Email Notes (Computer Science)

Internet and Email

Webpage

A web page is a Document commonly written in HTML that is accessible through the    internet or other network using a browser. A web page    is accessed by a URL address and many contain text, Graphic, hyperlink etc are linked to other page.

OR,

A web page is a web document that is suitable for the world-wide-web.   

Website

A website is a set of related webpages typically served from a single web domain

HSEB Question Model For Physics | Grade XI

Time : 3 hrs | Full Marks : 75 | Pass marks : 27

Group ‘A’

1. Answer in brief, any SIX questions. [2 X 6 = 12]

        (a) What is the difference between accurate and precise measurement ?

        (b) A ball having a momentum P hits a bat and its momentum becomes –P. What is the change in the       momentum of the ball ?

        (c) State the condition of equilibrium of a system of co-planer forces.

HSEB Model Question Of Chemistry | Grade XI

Time: 3 hrs | Full Marks: 75 | Pass Marks: 27

Group ‘A’

Attempt any 15 questions  : [15 X 2 = 30]

1. State Law of reciprocal proportion.

2. The oxide of an element contains 67.67 % of oxygen and V.D. of its volatile chloride is 79

3. Define surface tension of Liquid.

Question Paper of Computer Science | Grade XI 2070

Candidates are required to give their answer in their own words as far as practicable. The Figures in the margin indicates full marks.

Time: 3 hrs | Full Marks: 75 | Pass Marks: 27

Group ‘A’ – Long Answer Questions

Attempt any three questions. [3 X 10 = 30]

1. Explain different types of programming languages with their merits and demerits. [10]
2. What is logic gate? Describe any four logic gates with truth table and gate symbol. [2 + 8]
3. What is computer architecture and computer organization? Describe the different units of computer system. [2 + 8]

Question Paper of Chemistry | Grade XI 2071

Candidates are required to give their answer in their own words as far as practicable. The figures in the margin indicates full marks.

Time: 3 hrs | Full Marks: 75 | Pass Marks: 27

Group ‘A’

Attempt any fifteen questions. [15 X 2 = 30]

1. 12gm of carbon react with 4gm of hydrogen to produce 16gm of methane. Which chemical law do these data illustrate. State the law. [1 + 1]
2. How many number of gold atoms are present in 0.6gm of 18 carat gold. The 24 carat gold is taken as 100% pure gold. (atomic mass of gold = 197). [2]

Question Paper of Computer Science | Grade XI 2071

Candidates are required to give their answer in their own words as far as practicable. The figure in the margin indicate full marks.

 

Time: 3 hrs | Full Marks: 75 | pass Marks: 27 

Group ‘A’ – Long Answer questions

Attempt any three questions [3x10=30]

1. What is an operating system? Describe the types of operating system. [2+8=10]
2. What is logic gate? Describe any four types of logic gate with truth table. [2+8=10]