World Science and Technology – Exercise – 1

36. Which of the following is NOT a type of expansion slot or bus design used in Advanced-Technology class systems?

(a) PCMCIA
(b) ISA
(c) PROM
(d) EISA

Answer
Answer : (c)
Explanation
Explanation : PROM stands for Programmable Read Only Memory and is not a type of expansion slot or bus design. Today, PCI has become the most used expansion slot design in PCs. Older PCs incorporated both PCI and ISA slots for computability with older expanssion devices. Let us discuss.
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37. Which of the following operating systems is produced by IBM?

(a) OS-2
(b) Windows
(c) DOS
(d) UNIX

Answer
Answer : (a)
Explanation
Explanation : IBM also created it’s own version of DOS called PC-DOS.nn Let us discuss.
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38. In which decade was the telegraph invented?

(a) 1810s
(b) 1840s
(c) 1870s
(d) 1890s

Answer
Answer : (b)
Explanation
Explanation : On May 24, 1844, Samuel Morse send his famous message, “What hath God wrought?” Let us discuss.
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39. Blue is what number on the resistor color code?

(a) 1
(b) 4
(c) 2
(d) 6

Answer
Answer : (d)
Explanation
Explanation : No answer description available for this question. Let us discuss.
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40. ‘CD’ computer abbreviation usually means ?

(a) Command Description
(b) Change Data
(c) Copy Density
(d) Compact Disc

Answer
Answer : (d)
Explanation
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