Find the odd man out.
Answer: B
Correct answer: Microwaves
Coaxial cable, twisted pair and optical fibre are all guided media - the signal travels inside a physical conductor or fibre laid between the two ends. Microwaves travel through open space between antennas, so they are the unguided, wireless medium in the list.
Please log in or register to report this question.
Find the odd one out?
Answer: B
Correct answer: Printer
A touch screen, a mouse and a keyboard all carry information into the computer, so they are input devices. A printer takes results out of the machine and puts them on paper, which makes it the output device in the list.
Please log in or register to report this question.
A prescribed set of well-defined instructions for solving mathematical problems is called _______
Answer: D
Correct answer: an algorithm
An algorithm is a finite, ordered set of unambiguous steps that solves a problem or computes a result, each step being effective and the whole terminating. It is written before any code and can be expressed in words or a flowchart; a compiler is the program that translates the code that later implements it.
Please log in or register to report this question.
Which is a single integrated circuit?
Answer: A
Correct answer: Chip
A chip is a single integrated circuit - one piece of silicon carrying a complete circuit of transistors, sealed in a package. A gate is one logic element within such a circuit, while a CPU may span several chips and a motherboard is a board carrying many of them.
Please log in or register to report this question.
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.
Please log in or register to report this question.
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.
Please log in or register to report this question.
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.
Please log in or register to report this question.
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.
Please log in or register to report this question.
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.
Please log in or register to report this question.
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.
Please log in or register to report this question.
