Computer Awareness Previous Year Questions (PYQ) with Answers – Page 9

Project Loon used high-altitude balloons to beam internet access to remote areas. Project Loon was developed by X, the research lab of Google's parent company Alphabet, and began trials in New Zealand in 2013.

Read Only Memory is the permanent or non-volatile memory of a computer: its contents are written once and survive when the power is switched off, which is why the BIOS firmware that starts the machine and runs the power-on self-test is stored in it.

An electronic spreadsheet such as Microsoft Excel or LibreOffice Calc can filter, merge and sort data, so all three belong to its work and no single one of them is the answer.

A daisy wheel printer prints by striking the paper, so it is an impact printer. It carries a flat wheel with spokes, each spoke ending in a moulded letter or figure, and the wheel looks like the petals of a daisy, which gives it its name.

In Google Chrome, holding Control and pressing Tab moves to the next open tab on the right, and the pair Control, Shift and Tab moves back to the previous one.

The hexadecimal system has base sixteen, so it needs sixteen symbols for a single place.

A port is the socket on a computer where an external device is plugged in, so that the keyboard, mouse, printer, monitor or pen drive can exchange data with the machine.

In a web address the part before the colon and the two slashes names the protocol, so http, the HyperText Transfer Protocol, is the set of rules by which a browser asks a server for a page and the server answers.

Cache is a small quantity of very fast static RAM placed between the processor and main memory to hold the instructions and data most likely to be needed next, and of the options given it has the shortest access time; only the registers inside the processor itself are faster.

Computer memory is counted in powers of two because a binary machine addresses memory in twos, so each step up the ladder is 1024 of the unit below it, not 1000.

MS Word is a word processor made by Microsoft, and any program written to do a particular job for the user is application software.

A toggle key switches a feature on with one press and off with the next, so it has two states and keeps whichever one you left it in.

Hexadecimal is base sixteen, so the four places of C3B1 carry the weights 4096, 256, 16 and 1 from left to right, and the letters stand for numbers: A is 10, B is 11, C is 12, D is 13, E is 14 and F is 15.

In Boolean algebra a literal is any single appearance of a variable in an expression, whether it appears plain or with a bar over it.