1571. Viruses are called that because
A. They are viruses
B. They can copy themselves and spread.
C. Both A and B
D. None of these
✅ The correct answer is option B.
Computer
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1572. A billionth of a second is defined as a:
A. millisecond
B. microsecond
C. nanosecond
D. picoseconds
✅ The correct answer is option C.
1573. Which is a device that changes information into digital form?
A. Modem
B. Digitizer
C. Mouse
D. Light pen
✅ The correct answer is option B.
1574. The most important advantage of a video disk is
A. Compactness
B. Potential capacity
C. Durability
D. Cost effectiveness
✅ The correct answer is option B.
1575. A compiler means
A. A person who compiles source programs
B. The same thing as a programmer
C. Keypunch operator
D. A program which translates source program into object program
✅ The correct answer is option D.
1576. Which of the following is required when more than one person uses a central computer at the same time?
A. terminal
B. light pen
C. digitizer
D. mouse
✅ The correct answer is option A.
1577. What is the name of an application program that gathers user information and sends it to someone through the Internet?
A. A virus
B. Spybot
C. Logic bomb
D. Security patch
✅ The correct answer is option B.
1578. IBM 7000 digital computer
A. belongs to second generation
B. uses VLSI
C. employs semi conductor memory
D. has modular construction
✅ The correct answer is option D.
1579. The OR, XOR & AND functions can be performed by _____ of the computer in a CPU.
A. ALU
B. CU
C. Memory
D. Register
✅ The correct answer is option A.
1580. Hardware includes ……….
A. all devices used to input data into a computer.
B. sets of instructions that a computer runs or executes.
C. the computer and all the devices connected to it that are used to input and output data.
D. all devices involved in processing information including the central processing unit, memory and storage.
✅ The correct answer is option D.