Computer Awareness Previous Year Questions (PYQ) with Answers

It is the batch file that MS-DOS runs automatically, line by line, every time the computer starts. A batch file is a plain text file of DOS commands with the.BAT extension.

SGML was designed to be independent of both hardware and software, so saying it depends on a computer's hardware is false.

Joining a program to the library routines it calls is the job of a linker, a separate system utility, not of the operating system.

TELNET is an application-layer protocol that lets a user log in to a remote computer and work on it through a text terminal.

ONDC lets a buyer on one app buy from a seller listed on any other app on the network.

In dropshipping the seller runs the shop and sets the price, while a supplier holds the stock and ships each order straight to the buyer.

CDMA is a channel access method that lets many mobile users share the same radio frequency band at the same time.

At the common MP3 bit rate of 128 kilobits per second, one hour of music takes roughly 55 to 60 megabytes, so about 50 MB is the closest figure.

UNIX was designed from the start as a time-sharing system, so this statement is false. UNIX was developed at Bell Labs from 1969 by Ken Thompson and Dennis Ritchie.

Flash memory is erased electrically, not by ultraviolet light, so this is not one of its features. Flash memory is a type of EEPROM (electrically erasable programmable read-only memory) that can erase and rewrite whole blocks at a time, which makes it fast.

x86 and MIPS assembly are low-level languages written for particular processor families, while Python and Java are high-level languages. An assembly language uses short mnemonics such as MOV, ADD and JMP that stand directly for a processor's machine instructions, so each family of processors has its own.

Fourth-generation computers, from about 1971, were built around the microprocessor, a whole CPU on a single chip. Computer generations are named after the main switching technology of the time.

HTTP, the HyperText Transfer Protocol, is the application-layer protocol a browser uses to ask a web server for a page and to receive the HTML, images and scripts that make it up.

Assembly language replaces the binary machine codes of a processor with short symbols called mnemonics, such as MOV, ADD and JMP.

Artificial Intelligence is the ability of a machine to perform tasks that normally need human intelligence, such as reasoning, learning and taking decisions.

Multimedia means using several forms of media, such as text, graphics, audio, video, images and animation, together, often in a way the user can interact with.

A Trojan is a program that looks useful or harmless but secretly carries harmful code, so it is a piece of malicious software, or malware.

A linker is system software, a programming tool that joins compiled pieces of code into one program that can run; it does not do a task for the end user.

A firewall stands between a computer or private network and the outside world and blocks traffic that is not allowed.

A firewall inspects incoming traffic, keeps out unauthorised users and blocks suspicious activity, but it has nothing to do with connecting telephones.