Which of the following is called low level languages?
Answer: C
Correct answer: Both of the above
Machine language and assembly language are the two low level languages: both work in the processor's own instruction set, one in binary and the other in mnemonics that map to it one for one.
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The language which is CPU dependent is
Answer: C
Correct answer: Assembly
Assembly language is written in the mnemonics of one particular instruction set, so a program written for one processor family will not assemble for another. C is compiled and can be recompiled for any target, and Java runs on a virtual machine, which is what makes it independent.
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When data to be input is numeric in nature, data type in program is classified as
Answer: A
Correct answer: real integers
Numeric input must be held in a numeric type, so that arithmetic can be done with it. A string type would store the digits as characters, and adding two such values would join them rather than sum them - which is exactly the mistake this question is guarding against.
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Types of computer language translator are
Answer: D
Correct answer: all of these
All three translate one form of code into another: a compiler converts a whole high level program at once, an interpreter converts and executes it statement by statement, and an assembler converts assembly mnemonics into machine code.
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In line "400 INPUT NUM: PRINT 5.6*NUM+10" of a BASIC program, 'NUM is
Answer: B
Correct answer: variable
NUM receives whatever the INPUT statement reads, so its value changes from one run to the next. That is what makes it a variable; the numbers 5.6 and 10 written into the same line are the constants.
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The statement which is not the characteristic of COBOL is
Answer: B
Correct answer: It is very efficient in coding and execution
COBOL was designed for readability and portability in business data processing, and it achieves both: its English-like statements are easy to follow and the language is standardised. The cost is verbosity and slow execution, so efficiency is precisely what it is not known for.
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What is the use of control unit of a microprocessor?
Answer: B
Correct answer: To decode instructions and generate control signals
The control unit fetches each instruction, decodes it, and issues the timing and enable signals that make the other units carry it out. Arithmetic and logic are performed by the ALU, storage by memory, and input by the input devices - the control unit directs them all without doing any of their work itself.
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Programming language 'COMAL' stand for
Answer: A
Correct answer: Common Algorithmic Language
COMAL stands for COMmon ALgorithmic Language. It was devised in Denmark to combine the accessibility of BASIC with the structure of Pascal.
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The command of a computer is mainly executed by
Answer: A
Correct answer: Arithmetic and logical unit
Executing a command means actually performing the operation it specifies, and that is the ALU's work. The control unit decides what shall be executed and when, but the execution itself happens in the ALU.
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Loop which is tested at least once in case condition does not fulfilled is classified as
Answer: D
Correct answer: REPEAT UNTIL loop
REPEAT … UNTIL tests its condition at the end of the body, so the body always runs at least once, even if the condition is already satisfied. A WHILE loop tests first and so may run no times at all.
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