Technology Questions and Answers

Answer: C

A colour picture tube uses about 25,000 volts to accelerate the electron beams.

The flyback transformer generates it. At that energy the electrons excite the phosphors brightly enough to be seen in daylight, and the tube also emits some X-rays, which the leaded glass absorbs.

Answer: C

Interpreter is a term from programming languages.

It executes source code directly, statement by statement, without producing a separate executable. That makes development quicker but execution slower. Python, Ruby and JavaScript are usually interpreted.

Answer: B

Christopher Latham Sholes invented the typewriter keyboard.

He patented the first practical typewriter in 1868 and devised the QWERTY layout, arranging common letter pairs apart so the typebars would not jam. The layout outlived the mechanism entirely.

Answer: B

Windows NT is not application software - it is an operating system.

Photoshop, Word and PageMaker are applications: programs that do a job for the user. The operating system manages the hardware and provides the services the applications run on.

Answer: C

The bootstrap loader finds and loads the operating system into RAM.

The BIOS reads it from the boot sector and hands over control; it then locates the kernel and loads it. The name comes from the idea of pulling oneself up by one's own bootstraps.

Answer: A

The CRT is associated with a monitor.

A cathode ray tube fires electrons at a phosphor screen, deflected by coils to scan out the picture. CU and ALU are parts of the processor.

Answer: A

ECP stands for Extended Capabilities Port.

It is a fast bidirectional mode of the PC parallel port, developed by Microsoft and Hewlett-Packard, using DMA to move data far faster than the original unidirectional printer port.

Answer: D

A compiler belongs to programming languages.

It translates source code written in a high-level language into machine code, checking the syntax and optimising as it goes, and produces an executable that runs without the compiler present.

Answer: C

A colour picture tube uses about 25,000 volts to accelerate the electron beams.

The flyback transformer generates it. At that energy the electrons excite the phosphors brightly enough to be seen in daylight, and the tube also emits some X-rays, which the leaded glass absorbs.

Answer: B

The range of frequencies available for data transmission is the bandwidth.

Strictly it is the width of the frequency band in hertz, but the word is also used for the resulting data rate. The two are linked: Shannon's theorem sets the maximum rate a channel of given bandwidth and noise can carry.