In statement '100 LET N1 = LEN(AINR )' of BASIC language, built-in function is
Answer: A
Correct answer: LEN
LEN is supplied by the language itself and returns the number of characters in a string, so it is a built-in function. LET is a keyword, not a function, and N1 is the variable receiving the result.
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Which of the following statement is valid?
Answer: B
Correct answer: 1KB = 1024 bytes
The binary prefixes step by 1024, so a kilobyte is 1024 bytes and a megabyte is 1024 kilobytes, or 1,048,576 bytes. The options giving 1000 bytes to the kilobyte and 1024 bytes to the megabyte both break that sequence.
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The words that are set aside by the programming language for its own use is called
Answer: A
Correct answer: Reserved words
Words the language keeps for itself - if, while, return - are called reserved words or keywords, and a program may not use them as names of its own. Control structures are what some of those words build, which is a different thing.
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Which of the following is included in the machine cycle?
Answer: D
Correct answer: All of the above
The machine cycle is precisely the sequence of fetching an instruction from memory, decoding it, and executing it, so all three belong to it. The store or write-back step is sometimes counted as a fourth.
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Loop statement used in program to continue repetition until some condition is met is classified as
Answer: D
Correct answer: REPEAT UNTIL loop
REPEAT … UNTIL goes on repeating until the stated condition becomes true, which is the arrangement the question describes. A WHILE loop is expressed the other way round: it continues while a condition remains true.
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In programming a single instruction is classified as
Answer: A
Correct answer: statement
A single instruction in a program is a statement. Several statements together make a block or a routine, but the unit itself is the statement.
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Language that is developed for business applications is known as
Answer: B
Correct answer: COBOL
COBOL - Common Business Oriented Language - was designed for business data processing, with file handling, report generation and decimal arithmetic. Pascal, C and C++ are general purpose languages.
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In the CPU of a computer, the logical unit is mainly responsible for
Answer: B
Correct answer: Comparing numbers
The logic half of the ALU performs comparisons and Boolean operations - equal, greater than, AND, OR - and it is those comparisons that make branching possible. Arithmetic belongs to the other half, and controlling the flow of information is the control unit's work.
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With the help of microprocessor what can be made?
Answer: D
Correct answer: All of the above
A microprocessor is a general purpose processing element, so it serves wherever computation is needed - in a pocket calculator, in a computer, and in the embedded digital systems inside appliances and instruments.
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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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