Computer Fundamental Miscellaneous - Study Mode

[#826] Which is a swapping device is used to hold the images of pages in main memory.
Correct Answer

(B) Paging drum

Explanation

Solution: Paging drum One form of swapping device used to hold the images of pages no longer held in main memory in a paging virtual management system.

[#827] A section of code that may only be executed by one process at any one time is
Correct Answer

(C) Critical region

Explanation

Solution: A Critical Section is a code segment that accesses shared variables and has to be executed as an atomic action. It means that in a group of cooperating processes, at a given point of time, only one process must be executing its critical section.

[#828] The latest PC keyboards use a circuit that senses the movement by the change in its capacitance. What are these keyboards called?
Correct Answer

(A) Capacitance keyboards

Explanation

Solution: A capacitive keyboard is a type of computer keyboard that uses a change of capacitance on the capacitor pad to detect a pressed key on a keyboard. It provides functionality similar to a standard contact keyboard, but its internal structure is different and is fairly quicker and more reliable.

[#829] A step-by-step procedure used to solve a problem is called
Correct Answer

(B) Algorithm

Explanation

Solution: A step-by-step procedure used to solve a problem is called Algorithm. An algorithm (pronounced AL-go-rith-um) is a procedure or formula for solving a problem, based on conducting a sequence of specified actions.

[#830] Which memory is nonvolatile and may be written only once?
Correct Answer

(C) PROM

Explanation

Solution: PROM memory is non-volatile and may be written only once. A programmable read-only memory (PROM) or field programmable read-only memory (FPROM) or one-time programmable non-volatile memory (OTP NVM) is a form of digital memory where the setting of each bit is locked by a fuse or antifuse.