Computer Fundamental Miscellaneous - Study Mode

[#786] Which of the following is required when more than one person uses a central computer at the same time?
Correct Answer

(A) terminal

Explanation

Solution: Centralized computing is computing done at a central location, using terminals that are attached to a central computer. The terminals may be text terminals or thin clients, for example. It offers greater security over decentralized systems because all of the processing is controlled in a central location.

[#787] Which is not necessary when using bar codes in supermarkets?
Correct Answer

(C) Price on the shelf

Explanation

Solution: Price on the shelf is not necessary when using bar codes in supermarkets. It also contains a check digit, so that the computer can validate that the data has been read in correctly. The barcode does not contain price. The price is held in the database instead. This makes it easy to change if there are special offers or prices go up.

[#788] The language that the computer can understand and execute is called
Correct Answer

(A) Machine language

Explanation

Solution: The only language that the computer can process or execute is called machine language. It consists of only 0s and 1s in binary that a computer can understand. In short, the computer only understands binary code, i.e. 0s and 1s.

[#789] Design qualifications do not normally include
Correct Answer

(D) Blueprints

Explanation

Solution: Design qualifications in computer systems and software refer to the set of specifications that outline how a system should function and what requirements it must fulfill. They normally include: ✔ Output requirements: Specifications of what the system must produce as output. ✔ Input and storage requirements: Details of data inputs and how the system will store them. ✔ Control provisions: Mechanisms for ensuring correct operations, security, and error handling. However, blueprints are physical or architectural drawings used in civil or mechanical engineering, not typically part of system design qualifications in computer fundamentals. Therefore, blueprints are not normally included in design qualifications.

[#790] Which of the following is form of semi conductor memory in which it is possible to change the contents of selected memory locations by applying suitable electrical signals.
Correct Answer

(C) EAROM

Explanation

Solution: EAROM Acronym for electrically alterable read-only memory. A form of semiconductor memory in which it is possible to change the contents of selected memory locations by applying suitable electric signals.