Which program is used for business applications?
Answer: B
Correct answer: COBOL
COBOL - Common Business Oriented Language - was designed for exactly this: file handling, record processing and report generation, with decimal arithmetic suited to money. FORTRAN is for scientific work and C++ for systems and applications programming.
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What is the combination with which central processing unit is made?
Answer: A
Correct answer: Arithmetic logic and control unit
The CPU is made up of the arithmetic logic unit and the control unit. Storage and output are separate parts of the machine, which is why the options pairing them with control are wrong.
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In line "200 INPUT NUM: PRINT 5.8*NUM+5" of a BASIC program, 'PRINT 5.8*NUM+5" ' is
Answer: A
Correct answer: statement
PRINT 5.8*NUM+5 is a complete instruction: a command and what it operates on. That is a statement. The expression inside it is only one part of it.
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The program which is computed by all computers is
Answer: B
Correct answer: Machine language program
Every computer can execute machine code, since that is what its processor is built to do. A source program in COBOL or BASIC must first be translated, and whether it can be translated at all depends on what compiler is available.
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In programming language COMAL, symbol of '//' is used instead of
Answer: A
Correct answer: remarks
In COMAL the double slash introduces a remark - a note for the reader that the compiler ignores - in place of the REM statement used by BASIC. C++ and Java later adopted the same marker.
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LDA is used instead of LOAD ACCUMULATOR and can be classified as
Answer: B
Correct answer: mnemonics
LDA is a short, memorable code standing for the operation load accumulator. Such abbreviations are mnemonics - the word means an aid to memory - and they are what assembly language substitutes for binary operation codes.
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Which one of the following statement is true for the machine language?
Answer: D
Correct answer: All of the above
All three are true of machine language: the earliest programs were written in it directly, it is the only thing a processor executes, and because it is defined by a particular instruction set it differs from one machine to another.
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First component in algorithms is
Answer: C
Correct answer: sequence
Every algorithm is built from three constructs, and sequence - one step after another - is the first and simplest. Selection and repetition are added to it to give choice and looping.
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For scientific calculations which language is used?
Answer: D
Correct answer: FORTRAN
FORTRAN - Formula Translation - was written for numerical and scientific computation, and its array handling and floating-point support are still used in high-performance scientific code. SQL is a query language and is not for calculation at all.
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Type of subroutines which are available to users of computer as default part of software is classified as
Answer: C
Correct answer: library subroutine
Routines supplied with the language or the system, ready for any program to call - square root, string comparison, sorting - are held in a library. A local subroutine is written for one program only.
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