'.INI' extension refers usually to what kind of file?
Answer: B
An .INI file is a system configuration file.
It holds settings as plain text in sections with key-value pairs. Windows used INI files extensively before the registry replaced them, and many programs still use the format.
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'.TMP' extension refers usually to what kind of file?
Answer: C
A .TMP file is a temporary file.
Programs create them to hold intermediate data - an unsaved document, an extracted archive, a print spool - and normally delete them on exit. Files left behind by crashes accumulate and can be cleared safely.
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In a color television set using a picture tube a high voltage is used to accelerate electron beams to light the screen. That voltage is about?
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.
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The sampling rate, (how many samples per second are stored) for a CD is...?
Answer: C
A CD samples at 44.1 kHz.
By the Nyquist theorem a sampling rate must be more than twice the highest frequency to be recorded; human hearing reaches about 20 kHz, so 44.1 kHz captures it with a margin for the anti-aliasing filter.
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What does the abbreviation GPS stand for ?
Answer: C
Correct answer: Global Positioning System
GPS determines a receiver’s position by timing signals from several satellites at once, needing at least four for a three-dimensional fix. India operates its own regional system, NavIC, alongside it.
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'.BAT' extension refers usually to what kind of file?
Answer: B
A .BAT file is a system batch file.
It contains a list of commands that the command interpreter runs in sequence, as if typed at the prompt. AUTOEXEC.BAT, which ran at startup, was the best known.
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What does the term PLC stand for?
Answer: C
PLC stands for programmable logic controller.
It is a ruggedised industrial computer that reads sensors and drives motors, valves and relays on a factory floor. It replaced banks of hard-wired relays, and its logic is usually written as a ladder diagram.
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'CD' computer abbreviation usually means ?
Answer: D
CD stands for compact disc.
Philips and Sony developed it jointly and launched it in 1982. A 120 mm disc holds about 700 MB, read by a laser from a spiral of pits five kilometres long.
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Changing computer language of 1's and 0's to characters that a person can understand is:
Answer: C
Turning the computer's ones and zeros into characters a person can read is decoding.
The bits are mapped to characters by a code such as ASCII or Unicode, in which each letter has a numeric value - A is 65 in ASCII.
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Who is credited with inventing the World Wide Web ?
Answer: D
Correct answer: Tim Berners-Lee
Tim Berners-Lee proposed the Web at CERN in 1989 and wrote the first browser and server, defining HTML, HTTP and the URL. Cerf and Kahn had earlier designed TCP/IP, which is the internet the Web runs on rather than the Web itself.
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