Computer language based on machine code is classified as
Answer: B
Correct answer: low level programming language
A low level language works in the terms of the machine's own instruction set, with one statement corresponding closely to one machine instruction. High level languages deliberately move away from machine code towards the language of the problem.
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Which term is associated with the comparisons of processing speeds of different computer system?
Answer: B
Correct answer: MIPS
MIPS - millions of instructions per second - is the figure quoted when processing speeds are compared. CPS is characters per second, a printer measure, and MPG belongs to motor cars.
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Loop which does not executed at all if it is tested at beginning is classified as
Answer: B
Correct answer: WHILE loop
A WHILE loop tests its condition before entering the body, so if the condition is false at the outset the body never runs at all. A REPEAT loop tests at the end and therefore always runs at least once.
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Which file organization is allowed by a direct access storage device?
Answer: D
Correct answer: sequential, indexed and direct
A direct access device can reach any block without reading what comes before it, so it supports direct organisation; and since it can also read blocks in order, it supports sequential and indexed organisation as well. A sequential device such as tape supports only the first of the three.
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In line '400 IF NAMEINR ="***" THEN Average= Total Mark/N' of BASIC program, AVERAGE is considered as
Answer: A
Correct answer: real numbers
Average = Total Mark / N is a division, and a division of one integer by another rarely comes out whole, so the variable must be able to hold a fractional value. That is what a real type is for.
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Rogue value in statement "140 PRINT "For each one type in name. Type '***,0,0' to finish" is
Answer: A
Correct answer: asterisk
The three asterisks are the value typed to say there are no more names to enter - a value chosen because no real name could look like it. The zeros that follow are the marks entered alongside it and are ignored.
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Statement in Comal language 'IF age >=18 THEN PRINT "Yes" ELSE PRINT "No" is an example of
Answer: D
Correct answer: if then else statement
The statement has all three keywords and both branches: a condition after IF, one action after THEN and another after ELSE. An if then statement would have only the first branch.
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What type of languages can easily interact with the hardware?
Answer: D
Correct answer: Low level languages
A low level language works in the terms the hardware itself uses - registers, addresses, individual instructions - so it can reach the machine directly. That is the whole reason for using one, and it is what higher level languages deliberately hide.
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Names used to identify a specific location and are invented by programmers are called
Answer: B
Correct answer: symbolic addresses
In assembly language a programmer gives a memory location a name of his own choosing - a label - and the assembler works out the actual address. Such names are symbolic addresses. Mnemonics, by contrast, stand for operations rather than for locations.
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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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