1. Which of the following is an input device of a computer ?

Speaker

Printer

Scanner

Monitor

Answer: Scanner

Explanation:

Scanner is an input device.

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2. Transistors belong to which of the following generation of the computers ?

First

Second

Third

Fourth

Answer: Second

Explanation:

First Generation -Vacuum Tubes, Second Generation - Transistors, Third Generation - Integrated Circuits, Fourth Generation - Microprocessors

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3. Trackball is which of the following devices ?

Input device

Touchpad

Output device

Barcode reader

Answer: Input device

Explanation:

A trackball is a pointing input device. It consists of a ball held by a socket containing sensors to detect a rotation of the ball about two axes. The user rolls the ball with the thumb, fingers or the palm of the hand to move a cursor.

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4. Which type of computers is used to control air traffic and radar of national defence ?

Personal computers

Analogue computers

Hybrid computers

Digital computers

Answer: Hybrid computers

Explanation:

Hybrid computers exhibit features of analog computers and digital computers. Hybrid computers are used to control air traffic and radar of national defence.

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5. How many function keys are present on a standard PC keyboard ?

10

9

12

15

Answer: 12

Explanation:

There are 12 function keys on a standard PC keyboard.

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6. A computer on the Internet that uses HTTP protocol is known as: ?

LAN

Web Server

WAP

WLAN

Answer: Web Server

Explanation:

A computer on the Internet that uses HTTP protocol is known as Web Server.

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7. Third generation computers used: ?

vacuum tubes

integrated circuits

Transistors

VLSI technique

Answer: integrated circuits

Explanation:

First generation: Vacuum tube based, Second generation: Transistor based, Third generation: Integrated circuit based, Fourth generation: VLSI microprocessor based, Fifth generation: ULSI microprocessor based.

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8. What is the shortcut key for the central alignment of a line or text in MS Office software ?

Ctrl+E

Ctrl+C

Ctrl+G

Ctrl+A

Answer: Ctrl+E

Explanation:

‘Ctrl+E’ is the shortcut key for the central alignment of a line or text in MS Office software.

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9. ___ is the central server in computer network which lets the concerned user utilise the storage capacity of the server ?

Application Server

File Server

Print Server

Web Server

Answer: File Server

Explanation:

A file server is a central server in a computer network that provides file systems or at least parts of a file system to connected clients. File servers therefore offer users a central storage place for files on internal data media, which is accessible to all authorized clients.

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10. Which of the following is NOT a portable device ?

iPods

Laptops

Desktop computers

Thumb drives

Answer: Desktop computers

Explanation:

A portable device is any device that can be carried easily. Desktop computers are not portable devices.

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