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SSC > Computer and IT

Explore popular questions from Computer and IT for SSC. This collection covers Computer and IT previous year SSC questions hand picked by experienced teachers.

Q 1.

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Which of the following is not an operating system ?

Multi user-Single tasking

B

Single user- Single tasking

C

Single user-Multitasking

D

Multi user-Multitasking

Explanation

A multi-user operating system allows multiple users to access a computer system at the same time. Although frequently associated with multiprogramming, multiuser operating system does not imply multiprogramming or multitasking.

Q 2.

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When a group of computers is connected together in a small area without the help of telephone lines, it is called :

A

Remote Communication Net-work (RCN)

Local Area Network (LAN)

C

Wide Area Network (WAN)

D

Value Added Network (VAN)

Explanation

A local area network (LAN) is a computer network that interconnects computers in a limited area such as a home, school, computer laboratory, or office building using network media. The defining characteristics of LANs, in contrast to wide area networks (WANs), include their usually higher data-transfer rates, smaller geographic area, and lack of a need for leased telecommunication lines.

Q 3.

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WLL stands for

A

Walking Land Line

B

Walking Loop Line

C

Wireless Land Line

Wireless in Local Loop

Explanation

WLL stands for Wireless in local loop, is a term for the use of a wireless communications link as the "last mile / first mile" connection for delivering plain old telephone service (POTS) and/or broadband Internet to telecommunications customers.

Q 4.

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Where is the National Institute of Excellence in the field of Information Technology and Allied Sciences proposed to be set up?

A

Bangalore

B

Hyderabad

C

Pune

Allahabad

Explanation

The Indian Institute of Information Technology Allahabad (IIIT-A) was established in 1999, as a center of excellence in Information Technology and allied areas. The mission of IIIT, Allahabad is to be a unique and world class nucleating "Apex Center of Excellence" in the area of Information Technology and Allied Sciences, so as to enhance India's Technological strength in IT and for become a pace-setting institution for other similar institutes to be established in the future. IIIT seeks to derive its strength from a linkage with sound Indian traditions of centuries past, and sets out to create knowledge-based resources in regional languages.

Q 5.

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Where is the proposed Microsoft Software Development Centre in India to come up?

A

Bangalore

B

New Delhi

Hyderabad

D

Pune

Explanation

Located in Hyderabad, the Microsoft India Development Center (MSIDC) is Microsoft's largest software development center outside of their headquarters in Redmond, Washington. The MSIDC teams focus on strategic and IP sensitive software product development.

Q 6.

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Where was India's first computer installed ?

A

Indian Institute of Technology, Delhi

B

Indian Institute of Science, Bangalore

C

Indian Iron'& Steel Co. Ltd., Bumpur

Indian Statistical Institute, Calcutta

Explanation

First Computer came in India in 1956, in Calcutta now Kolkata In Indian statistical institute Kolkata under doctors Dutta, Majumdar and Roy .It was not only the first computer of India but also Asia's first computer outside Japan.

Q 7.

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Who introduced "MMX" technology?

A

IBM

B

Apple

C

Microsoft

Intel

Explanation

MMX is a single instruction, multiple data (SIMD) instruction set designed by Intel, introduced in 1996 with their P5-based Pentium line of microprocessors, designated as "Pentium with MMX Technology". It developed out of a similar unit introduced on the Intel i860, and earlier the Intel i750 video pixel processor.

Q 8.

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Which of the following is not a role assigned to Science and Technology Entrepreneurship Parks ?

A

Training

B

Testing and Calibration

C

Technology development

Raising funds for entrepreneurs

Explanation

The Science and Technology Entrepreneurs' Park (STEP) was established at IIT Kharagpur in Dec. 1986 with financial support from DST New Delhi, DST West Bengal, IDBI, IFCI, ICICI. Approval was accorded by DST on Aug.14, 1987.the role of training, Testing and Calibration and Technology development has been assigned to it.

Q 9.

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The first computer language developed was

A

COBOL

B

BASIC

FORTRAN

D

PASCAL

Explanation

The first programming languages predate the modern computer. At first, the languages were codes. The first modern programming language was FORTRAN (1955), the "FORMULA TRANSLATOR", invented by John Backus, then COBOL,(1959) the Common Business Oriented Language, was used. Then PASCAL and BASIC came into existence.

Q 10.

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The 'NOSHADE' attribute in HTML

A

defines the thickness of the line

displays the line in red

C

displays the line in dark grey

D

displays the example in red

Explanation

The 'NOSHADE' attribute in HTML specifies that a horizontal line should render in one solid color (no shaded), instead of a shaded color. So, it displays the line in red.

Q 11.

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Processor's speed of a computer is measured in

A

BPS

MIPS

C

Baud

D

Hertz

Explanation

million instructions per second (MIPS) is a measure of a computer's processor speed. Many reported IPS values have represented "peak" execution rates on artificial instruction sequences with few branches, whereas realistic workloads typically lead to significantly lower IPS values.

Q 12.

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What is the size of Floppy Diskette which is used normally ?

{tex}3 \frac{1}{2} ^ \mathrm{\prime\prime} {/tex}

B

{tex}5 ^ {\prime\prime}{/tex}

C

{tex}4 ^ {\prime\prime}{/tex}

D

{tex}3 ^ {\prime\prime}{/tex}

Explanation

A floppy disk is a thin magnetic-coated disk contained in a flexible or semi-rigid protective jacket. Data is stored in tracks and sectors. The floppy disks are usually 3.5" in size. However, older floppy disks may be in use; these would be 5.25" in size. Double sided high density 3.5" disks can hold 1.44 Mb of data.

Q 13.

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The basic application of an 'AND' gate in computers is for:

A

addition

B

subtraction

multiplication

D

division

Explanation

The 'AND' gate in computers has basic application of multiplication. It has two or more inputs and one output. An 'AND' gate produces an output of 1 if all the inputs are 1 if any of the inputs is zero then it produces an output of zero.

Q 14.

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'C' language is a

A

Low level language

High level language

C

Machine level language

D

Assembly level language

Explanation

C is a high level language. In computing is a general-purpose programming language initially developed by Dennis Ritchie between 1969 and 1973 at Bell Labs. C is one of the most widely used programming languages of all time, Many later languages have borrowed directly or indirectly from C, including C#, D, Go, Java, JavaScript, Limbo, LPC, Perl, PHP, Python, and Unix's C shell.

Q 15.

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What is clickjacking ?

Malicious technique of tricking Web user into revealing confidential information

B

A device that sends and receives data in a bit second

C

A form of Computer Engineering

D

A digital process that is used to display an image on monitor

Explanation

Clickjacking is a malicious technique of tricking a Web user into clicking on something different to what the user perceives they are clicking on, thus potentially revealing confidential information or taking control of their computer while clicking on seemingly innocuous web pages. It is a browser security issue that is vulnerability across a variety of browsers and platforms. A clickjack takes the form of embedded code or a script that can execute without the user's knowledge, such as clicking on a button that appears to perform another function. The term "clickjacking" was coined by Jeremiah Grossman and Robert Hansen in 2008.

Q 16.

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A compact disc (CD) is a data storage system of the type :

A

Magnetic

Optical

C

Electrical

D

Electromechanical

Explanation

The Compact Disc, or CD for short, is an optical disc used to store digital data. It was originally developed to store and play back sound recordings only, but the format was later adapted for storage of data (CD-ROM). Standard CDs have a diameter of 12 mm (4.7 in) and can hold up to 80 minutes of uncompressed audio or 700 MB{tex}(700{/tex} x {tex}10^6){/tex} bytes) of data. The encoding material sits atop a thicker substrate (usually polycarbonate) which makes up the bulk of the disc and forms a dust defocusing layer. The encoding pattern follows a continuous, spiral path covering the entire disc surface and extending from the innermost track to the outermost track. The data is stored on the disc with a laser or stamping machine.

Q 17.

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A parallel port is most often used by a

Printer

B

Monitor

C

Mouse

D

External storage device

Explanation

A parallel port can be used to connect a large number of devices. The most common usage was for printers, although scanners, external disk drives, and network adapters also used this port. With a special cable, two computers could also be connected directly for sharing files.

Q 18.

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What is an organisation's introductory web page called?

A

Portal

B

Vortal

C

Homepage

Web site

Explanation

The introductory web page of an organisation is called website. A website (also called an Internet site) is a group of HTML files connected by hypertext links and stored on a web server, i.e. a computer that hosts webpages and is permanently connected to the Internet.

Q 19.

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Who among the following developed World Wide Web (WWW), which gave a new type of information exhibition ?

A

Bob Cohen

Tim Berners-Lee

C

Robert Morris Jr.

D

Michel Derstuses

Explanation

The World Wide Web (abbreviated as WWW or W3, commonly known as the Web), is a system of interlinked hypertext documents accessed via the Internet. Using concepts from his earlier hypertext systems like ENQUIRE, British engineer, computer scientist and at that time employee of CERN, Sir Tim Berners-Lee, now Director of the World Wide Web Consortium (W3C), wrote a proposal in March 1989 for what would eventually become the World Wide Web.

Q 20.

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Which among the following is a distinctive feature by which a CD ROM drive is classified in a personal computer ?

A

Software bundle

Data transfer rate

C

Memory capacity

D

Storage period

Explanation

a CD-ROM drive, a device that can read information from a CD-ROM. CD-ROM players can be either internal, or external. There are a number of features that distinguish CD-ROM players, the most important of which is probably their speed or data transfer rate. CD-ROM players are generally classified as single-speed or some multiple of single-speed.

Q 21.

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Which one of the following companies announced sometime back the launch of India's first personal computer with one terabyte hard drive capacity?

A

Infosys Technologies

B

Wipro

HCL Infosystems

D

IBM

Explanation

On 15th July, 2007, HCL InfoSystem Ltd. India's premier information and the country's largest PC manufacturer announced the launch of India's first personal computer with one terabyte hard drive capacity in the market.

Q 22.

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A Group Ware is a

A

Hardware

B

Network

Software

D

Firmware

Explanation

Collaborative software or groupware is computer software designed to help people involved in a common task achieve goals. The design intent of collaborative software is to transform the way documents and rich media are shared to enable more effective team collaboration. Collaboration requires individuals working together in a coordinated fashion, towards a common goal. Accomplishing the goal is the primary purpose for bringing the team together.

Q 23.

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Which of the following circuit is used as 'Memory device' in computers ?

A

Rectifier

Flip-Flop

C

Comparator

D

Attenuator

Explanation

A flip-flop is a circuit that has two stable states and can be used to store state information. The circuit can be made to change state by signals applied to one or more control inputs and will have one or two outputs. It is the basic storage element in sequential logic. Flip-flops and latches are a fundamental building block of digital electronics systems used in computers, communications, and many other types of systems.

Q 24.

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Who developed the concept of e-mail ?

A

Bill Gates

B

Arthur C. Clark

Ray Tomlinson

D

Sabir Bhatia

Explanation

Ray Tomlinson is credited with developing the first viable e-mail program in 1971 for use on the ARPANET. Although text messages were occasionally sent over the network, Tomlinson created the first program. It is a method of exchanging digital messages from an author to one or more recipients. Modern email operates across the Internet or other computer networks. Some early email systems required that the author and the recipient both be online at the same time, in common with instant messaging. Today's email systems are based on a store-and-for-ward model.

Q 25.

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The symbols used in an assembly language are

A

Codes

Mnemonics

C

Assembler

D

Machine codes

Explanation

Assembly language uses a mnemonics to represent each low-level machine operation or opcode. Some opcodes require one or more operands as part of the instruction, and most assemblers can take labels and symbols as operands to represent addresses and constants, instead of hard coding them into the program.