Technology Questions and Answers

Answer: D

You should protect a computer from viruses, time bombs and worms - all of them.

A virus attaches itself to a program, a worm spreads by itself across a network, and a time bomb lies dormant until a set date. Anti-virus software, prompt patching and backups guard against all three.

Answer: B

HTML is used to author web pages.

HyperText Markup Language marks up text with tags that describe its structure - headings, paragraphs, lists, links - which the browser then renders. Tim Berners-Lee devised it in 1990.

Answer: C

RAM performs both read and write operations.

That is what distinguishes it from ROM, which can only be read. The name random access describes how it is addressed, not what may be done to it - any location is reached in the same time.

Answer: C

The home page of a website is its first page - the one a visitor arrives at by default.

It usually carries the main navigation, from which the rest of the site is reached. It is the file the server returns for the bare domain name.

Answer: D

Screen resolution measures the number of pixels.

It is given as width by height, such as 1920 × 1080. More pixels in the same physical area means finer detail, which is what pixel density in dots per inch expresses.

Answer: B

A GPU is a graphics processing unit.

It has thousands of simple cores designed to perform the same operation on many pixels at once. That massively parallel structure is why GPUs are now used for machine learning as much as for graphics.

Answer: B

A co-processor is relatively easy to support in software.

It handles a specific class of work - floating-point arithmetic in the classic case - and the compiler emits its instructions where they apply, falling back to library routines where the chip is absent. Programs need not be rewritten.

Answer: C

Number cruncher is the informal name for a supercomputer.

The term refers to machines built for sustained heavy arithmetic - weather forecasting, fluid dynamics, nuclear simulation - where the workload is almost entirely floating-point calculation.

Answer: A

A .MPG file is a movie file.

MPEG, the Moving Picture Experts Group, defines the compression standards used for video. MPEG-1 gave the Video CD, MPEG-2 the DVD and digital broadcasting, and MPEG-4 most modern streaming.

Answer: A

Secondary memory is also called auxiliary memory.

It is non-volatile and is reached through the input-output system rather than addressed directly by the processor - hard disks, SSDs, optical discs and tape.