Computer Awareness Previous Year Questions (PYQ) with Answers – Page 4

The Post Office Protocol, best known in its third version POP3, lets a mail client download messages from a mail server, and it works in two modes.

With a word or a phrase selected, Ctrl + K opens the Insert Hyperlink dialog box, where the selected text can be linked to a web address, to another file, to a place inside the same document such as a heading or a bookmark, or to an email address.

A memory card keeps data in flash memory, a semiconductor chip with no moving parts, so it is solid-state storage and not magnetic.

A data warehouse is exactly that, a central store into which data from many operational systems is extracted, cleaned and loaded so that it can be analysed for decision making.

In an auction the price is not fixed by the seller but is discovered from what buyers are willing to bid, and this way of trading appears at two levels.

In frequency division multiplexing each channel is given its own slice of the frequency band, and a small unused strip called a guard band is left between two neighbouring channels so that one does not spill into the next.

In the consumer-to-business model the consumer names the price or the terms and the business then accepts or declines the offer, so the usual direction of an offer is reversed.

A microprocessor is named after the width of its data bus, that is, the number of bits it can carry in and out in a single operation.

Octal has base 8, and because 2 raised to the power 3 equals 8, every octal digit expands into exactly three binary bits.

HTTP stands for HyperText Transfer Protocol and it is the set of rules by which a browser asks a web server for a page and the server sends it back, which is how data on the World Wide Web is reached.

In MS-Word 2016 the button marked 'Aa' in the Font group of the Home tab opens the Change Case menu, which rewrites the selected text without retyping it.

On-Line Transaction Processing is the mode in which a bank counter, a railway booking window or a payment gateway works: each transaction is processed the moment it is entered, so the response to the user is immediate, and every committed transaction is written at once, so the database always reflects…

A code walk-through is an informal review technique: a few team members read a module line by line, mentally execute it on sample data and note the defects they find, without the checklists, metrics and formal records of an inspection.

If one module must know the internal data or logic of another to work, the two are tightly coupled, and a change in one forces a change in the other.

The Waterfall model is called the linear sequential model because the project flows in one direction through requirement analysis, design, coding, testing, deployment and maintenance, with each phase completed and signed off before the next begins and no overlap between them.

It is a shorthand property, which means it sets several related properties in a single declaration: the type of the marker, its position and an image to use as the marker, in any order and with the omitted ones falling back to their default values.

Read the table row by row. The output is 0 only when both inputs are 0, and it is 1 in the other three rows, including the row where both inputs are 1.

A byte is made up of eight bits, so half a byte is four bits, and four bits together are called a nibble.

The generations of computers are named for the switching device they use, and the second generation, running from the late 1950s into the early 1960s, replaced the bulky vacuum tube with the transistor, which had been invented at Bell Laboratories in 1947.

In the binary system every place stands for a power of two, and 257 is 256 plus 1, that is two raised to the eighth plus two raised to the zero.