Which of the following is not a class based on size?
Answer: D
Correct answer: Digital Computer
Mainframe, mini and micro are the classes defined by size and capacity. Digital describes how a computer represents data - as against analogue - and says nothing about how big it is.
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The number of records contained within a block of data on magnetic tape is defined by the
Answer: C
Correct answer: Blocking factor
The blocking factor is the number of logical records grouped into one physical block on tape. Blocking reduces the number of inter-block gaps and so uses the tape more efficiently; the other three names are not standard terms.
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Second Generation computers were developed during
Answer: B
Correct answer: 1956 to 1965
The transistor generation runs from about 1956 to 1965. The years to 1955 belong to the vacuum tube machines, and integrated circuits take over from about 1965.
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The primary purpose of software is to turn data into _____
Answer: B
Correct answer: Information
Data are raw facts; software organises, selects and presents them so that they mean something, and that is what turns data into information. Programs are the software itself rather than its product.
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General purpose computers are those that can be adopted to countless uses simply by changing its
Answer: C
Correct answer: Program
What makes a computer general purpose is that the same hardware performs a different task when given different instructions. Changing the devices attached to it or the processor inside it does not alter what job it can be put to.
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Super computers are mainly useful for
Answer: A
Correct answer: Mathematical intensive scientific applications
Supercomputers are built for problems that need vast numbers of arithmetic operations - weather modelling, molecular simulation, nuclear physics. Data retrieval and heavy input-output are the work of mainframes, which are designed for throughput of transactions rather than for raw floating-point speed.
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A collection of 8 bits is called
Answer: A
Correct answer: Byte
Eight bits make a byte. Four bits make a nibble, and a word is whatever width the particular processor handles at once - 16, 32 or 64 bits on modern machines.
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Fifth generation computers are based on
Answer: A
Correct answer: Artificial Intelligence
The fifth generation is defined by the goal rather than by a single component: machines able to reason, understand natural language and learn. VLSI belongs to the fourth generation, and the other two options are not established terms.
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First generation computers used
Answer: C
Correct answer: Vacuum tube processors
The vacuum tube was the switching device of the first generation. Transistors, integrated circuits and microprocessors define the second, third and fourth.
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Which among the following is not a third generation computer?
Answer: B
Correct answer: IBM 1401
The IBM 1401 is a transistor machine of the second generation. The IBM 360, PDP-8 and HP 2115 all use integrated circuits and belong to the third.
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