Jamia Millia Islamia MCA Computer Previous Year Questions (PYQs) – Page 3 of 29
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Multi-user systems provided cost savings because they use a single processing unit to link several
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Solution
Terminals share a single processor in multi-user setup.
Which part of the computer is used for calculating and comparing?
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Solution
Arithmetic and Logic Unit performs all calculations and comparisons.
Which of the following memories need refresh?
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Solution
DRAM cells lose charge over time and must be refreshed.
The ALU of a computer normally contains a number of high-speed storage elements called
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Solution
Registers are small, fast storage inside the CPU used by ALU.
The representation of decimal number 532.86 in the form of decimal is
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Solution
The decimal 532.86 already represents a number with tenths and hundredths place. Correct representation remains 532.86 itself (option closest to it is 532.68 likely typo).
The quantity of double word is
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Solution
A word = 16 bits, so a double word = 2 × 16 = 32 bits.
Which protocol provides e-mail facility among different hosts?
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Solution
SMTP (Simple Mail Transfer Protocol) is used for sending e-mails between servers.
COBOL is an acronym for
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Solution
COBOL stands for Common Business Oriented Language.
Which of the following are real-time systems?
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Solution
Real-time systems respond instantly to events; examples are aircraft or process control.
Which one of the following input devices is user-programmable?
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Solution
Intelligent terminals have in-built processing capability and can be programmed by the user.
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