Intersection of columns and rows is called a -
Answer: A
The intersection of a row and a column is a cell.
It is addressed by its column letter and row number, as A1 or C7, and holds one value or formula. The cell is the basic unit of a spreadsheet.
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Which device among following is used for sending digital data over a phone line ?
Answer: A
A modem sends digital data over a telephone line.
It modulates the data onto an analogue carrier the line can carry, and demodulates the incoming signal back to data - which is where the name comes from.
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Which among following is secondary storage device ?
Answer: D
The hard disk is a secondary storage device.
Secondary storage is non-volatile and is reached through the input-output system rather than addressed directly by the processor. RAM is primary storage, and a diode and a semiconductor are components rather than storage.
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Where BIOS is stored ?
Answer: A
The BIOS is stored in a flash memory chip on the motherboard.
It must be non-volatile, since it runs before any disk is available, and flash allows the firmware to be updated in place - which older mask-programmed ROMs did not.
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Computer resolution measures -
Answer: D
Screen resolution measures the number of pixels.
It is given as width by height, such as 1920 × 1080. More pixels in the same physical area means finer detail, which is what pixel density in dots per inch expresses.
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What is algorithm ?
Answer: A
An algorithm is a step-by-step procedure for solving a problem or performing a calculation.
It must be unambiguous, finite and effective. The word comes from al-Khwarizmi, the ninth-century Persian mathematician whose book also gave us the word algebra.
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Who invented C++ ?
Answer: B
Bjarne Stroustrup created C++, at Bell Labs from 1979.
He added classes and object-oriented features to C while keeping its efficiency and its access to the machine. It was first called 'C with Classes' and renamed C++ in 1983.
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If CPU executes multiple programs simultaneously, it will be known as ?
Answer: C
A CPU executing several programs apparently at once is multitasking.
The operating system switches between them so rapidly that each appears to run continuously. Multiprocessing means several processors, and multiprogramming keeping several programs in memory ready to run.
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What is full form of CAM ?
Answer: A
CAM stands for computer aided manufacturing.
It uses computers to control machine tools directly, turning a CAD model into the tool paths a milling machine or lathe follows. Together they form CAD/CAM.
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Which is a application software among following ?
Answer: B
Microsoft Office is application software.
It does work for the user - writing, calculating, presenting. An operating system, a compiler and an assembler are all system software, serving the machine or other programs.
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