Which one of the following language reflects the way people think mathematically?
Answer: A
Correct answer: Functional
Functional programming is built on the evaluation of functions and avoids changing state, which is how mathematics itself works: f(x) means the same thing wherever it appears. Event-driven and cross-platform describe how a program is organised and where it runs, not how it reasons.
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In BASIC language, '150 LET Area=Width*Length' , optional word is
Answer: A
Correct answer: LET
In BASIC the assignment keyword LET may be written or omitted: 150 LET Area=Width*Length and 150 Area=Width*Length mean the same thing. The variable names are not optional, since without them nothing is assigned.
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The statement that is false regarding FORTRAN is
Answer: D
Correct answer: Excessive internal documentation is required
FORTRAN is the opposite: being terse and mathematical, it is criticised for being hard to read and for encouraging too little documentation, not too much. The other three statements are all true - it was designed for mathematical work, it is problem oriented, and it is the oldest surviving high level language.
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Statement which is treated as choice for a possible actions is classified as
Answer: A
Correct answer: case
A case statement lists several possible values and the action to take for each, so it selects one action out of many. A condition is what a case is tested against, not the statement itself.
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Way data in program is to be set is called its
Answer: C
Correct answer: format
The format of data is the arrangement in which it is laid out - how many digits, where the decimal point falls, how a date is written. Class and group describe kinds of data rather than their arrangement.
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One disadvantage of a direct access file is:
Answer: A
Correct answer: the delay in computing the storage address
Direct access files find a record by computing its address from its key, and that computation - hashing, and the handling of collisions when two keys give the same address - takes time on every access. Unused locations and duplicated addresses are consequences of the same scheme but are not what slows it down.
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In high level programming language Pascal, END statement lasts with the
Answer: B
Correct answer: full stop
A Pascal program ends with END. - the full stop marking the end of the whole program. A semicolon separates statements and appears after every inner END, but the last one takes the period.
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In JMP PRNT command, JMP and PRNT respectively are classified as
Answer: D
Correct answer: mnemonics and symbolic addresses
JMP is the short form of an operation, which makes it a mnemonic; PRNT is a label the programmer has attached to a location, which makes it a symbolic address. Every assembly instruction has this shape: an operation followed by what it operates on.
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Which of the following is not a primary storage device?
Answer: D
Correct answer: All of the above
Primary storage is the memory the processor addresses directly - RAM and ROM. Magnetic tape, magnetic disk and optical disk are all secondary storage: they hold data outside the processor's address space and must be read into memory before use. So none of the three is primary, and the answer covers all of them.
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Which computer language is used on internet?
Answer: D
Correct answer: Java
Java was designed for the network: applets ran in browsers and its bytecode runs on any platform with a virtual machine, which is exactly what a program distributed over the internet needs. BASIC, LOGO and Pascal are all teaching languages of an earlier period.
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