Which was the first computer which was introduced in Nepal?
Answer: B
Correct answer: IBM 1401
Nepal’s first computer was an IBM 1401, brought in by the Central Bureau of Statistics in 1971 to process the national census. The 1401 was IBM’s widely sold transistorised business machine of the early 1960s.
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Which of following allows two or more users to work on same time ?
Answer: B
Correct answer: Multiuser
A multiuser system lets several people work at once, each with a session of their own, the operating system dividing processor time, memory and files between them and keeping one user’s work separate from another’s. Multiprocessing describes several processors in one machine, and multithreading several threads within one program.
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Disk Operating System (DOS) was designed to work with which of the following input device ?
Answer: D
Correct answer: Keyboard
DOS presents a command-line prompt: the user types a command, presses Enter, and reads the reply as text. The whole interface is built around the keyboard; there is no pointer to move, so a mouse was only ever an optional extra used by individual programs.
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A process of preparing a floppy diskette for use is called _______________
Answer: B
Correct answer: formatting
Formatting writes the track and sector structure onto a blank diskette and lays down the directory and allocation table, so the operating system knows where it may put files. Until that is done the surface carries no organisation and nothing can be stored on it.
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RAM is used as a short memory because it is
Answer: A
Correct answer: Volatile
RAM is volatile: its contents last only while power is applied and vanish the moment the machine is switched off. That is why it serves as short-term working memory and why anything to be kept must be written to disk.
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The section of the CPU that selects, interprets and sees to the execution of program instructions
Answer: C
Correct answer: Control unit
The control unit selects the next instruction, decodes it, and issues the signals that make the ALU, registers, memory and input/output units carry it out. The ALU performs the arithmetic it is directed to, and registers and memory simply hold values.
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WWW stands for ?
Answer: B
Correct answer: World Wide Web
WWW stands for the World Wide Web - the system of hyperlinked documents that Tim Berners-Lee proposed in 1989, delivered over the internet by HTTP and addressed by URLs. The web is one service that runs on the internet, not the internet itself.
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The list of coded instructions is called
Answer: A
Correct answer: Computer program
A computer program is the list of coded instructions the machine executes. An algorithm is the method it implements, expressed independently of any language, and a flowchart is a picture of that method - neither can be run.
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CD–ROM is a kind of?
Answer: C
Correct answer: Optical disk
A CD-ROM stores data as pits and lands pressed into a reflective layer and reads them with a laser beam, so it is an optical disk. Magnetic disks record by magnetising a coating and read it with a head, and a magneto-optical disk combines both techniques - a laser to heat the spot, a magnetic field to write it.
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Page stealing
Answer: B
Correct answer: is taking page frames from other working sets
Page stealing is the memory manager taking a frame away from one process’s working set to satisfy another’s page fault. It is a sign that memory is over-committed, not that the system is well tuned, and it leads to thrashing if it goes far enough.
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