HTML is used to
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.
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Your computer has gradually slowed down. What's the most likely cause?
Answer: C
A computer that has gradually slowed is most likely infected with adware or spyware.
Such software runs continuously in the background, consuming processor time, memory and network bandwidth. A processor does not wear out and produce slower results; it either works or it does not.
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What does AM mean?
Answer: C
AM stands for amplitude modulation.
The amplitude of a carrier wave is varied in step with the signal. It was the first practical method of broadcasting speech and music, and it carries further than FM but is more affected by electrical interference.
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SLIP stands for -
Answer: C
SLIP stands for Serial Line Internet Protocol.
It carried IP packets over a serial link and was the standard way of dialling into the internet before PPP, which added error detection, authentication and dynamic addressing, replaced it.
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Where are saved files stored in computer ?
Answer: A
Saved files are stored on the hard disk.
It is non-volatile, so the data survives when the power is off. RAM and cache lose their contents at once, which is why unsaved work is lost when a machine crashes.
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Which of the following operating systems is produced by IBM?
Answer: A
OS/2 was produced by IBM.
It was developed with Microsoft from 1985 as the successor to DOS, but Microsoft turned to Windows and IBM continued alone. OS/2 was technically strong but never won the market.
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Which among following is odd ?
Answer: B
BIOS is the odd one - it is firmware, not a storage medium.
CDs, DVDs, SD cards and floppy disks are all removable media for storing data. The BIOS is the program held in flash memory on the motherboard that starts the computer.
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The electromagnetic coils on the neck of the picture tube or tubes which pull the electron beam from side to side and up and down are called a...?
Answer: B
The deflection coils on the neck of a picture tube are called the yoke.
They generate magnetic fields that sweep the electron beam horizontally and vertically, scanning it across the screen line by line to build the picture.
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The input used by an antenna or cable to a TV set uses frequencies called:
Answer: B
The signal an antenna or cable feeds to a television is RF - radio frequency.
The tuner converts it to a lower intermediate frequency (IF) for amplification, and the picture and sound are then recovered as video and audio frequency signals.
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How many bits in a byte?
Answer: B
There are 8 bits in a byte.
Eight bits give \( 2^8 = 256 \) combinations, enough for a character set with letters, digits and punctuation, which is why the byte settled at that size and became the unit of memory.
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