Computer Fundamental Miscellaneous - Study Mode
[#1071] There are historical evidences to prove that abacus was first used in
Correct Answer
(C) China
Explanation
Solution: The abacus is one of many counting devices invented in ancient times to help count large numbers, but it is believed that the abacus was first used by the Babylonians as early as 2,400 BC. The abacus was in use in Europe, China, and Russia, centuries before the adoption of the written Hindu-Arabic numeral system.
[#1072] A class of random access memory that requires periodic servicing in order for the contents to remain valid is
Correct Answer
(B) Dynamic RAM
Explanation
Solution: A class of random access memory that requires periodic servicing in order for the contents to remain valid is Dynamic RAM. Dynamic random-access memory (dynamic RAM or DRAM) is a type of random-access semiconductor memory that stores each bit of data in a memory cell, usually consisting of a tiny capacitor and a transistor, both typically based on metal-oxide-semiconductor (MOS) technology.
[#1073] Computer can not do anything without a
Correct Answer
(D) Program
Explanation
Solution: Programs are a set of instructions or ordered operations for a computer to perform a task. At first, a software program is developed followed by the creation of instructions or code for the program to be executed.
[#1074] The ability of a computer system to remain operational despite various failures is
Correct Answer
(C) Resilience
Explanation
Solution: System resilience is an ability of the system to withstand a major disruption within acceptable degradation parameters and to recover within an acceptable time.
[#1075] Which of the following memories must be refreshed many times per second?
Correct Answer
(B) Dynamic RAM
Explanation
Solution: Dynamic Random Access Memory is the most common type of Random Access Memory for personal computers and workstations. DRAM has to be refreshed many times per second in order to hold its data contents.