All Free Computer Science and IT MCQs with Answers

281. What Does SIM Stand for on a Cell Phone?

• A. Subscriber identity module
• B. Subscriber Inline module
• C. Secret Internet module
• D. Subscriber Interface Module

Explanation: SIM means Subscriber Identity Module, the chip that identifies a mobile subscriber and stores related authentication information. The other expansions are not standard telecommunications terms.

282. Which of the following term means to reckon?

• A. putare
• B. com
• C. computa
• D. computar

Explanation: Putare is a Latin verb meaning “to reckon” or “to calculate,” while computare was formed from related Latin roots and gave rise to the word computer.

283. A program that performs a useful task while simultaneously allowing destructive acts is a___________?

• A. Worm.
• B. Trojan horse.
• C. Virus.
• D. Macro virus

Explanation: A Trojan horse appears to perform a useful or legitimate task while secretly carrying out harmful actions. A worm mainly self-replicates, while a virus attaches itself to other files or programs.

284. Where are data and programme stored when the processor uses them?

• A. Main memory
• B. Secondary memory
• C. Disk memory
• D. Programme memory

Explanation: The processor works directly with data and programs held in main memory, or RAM. Secondary and disk memory provide longer-term storage but are not the processor's primary working area.

285. When a file is saved for the first time?

• A. a copy is automatically printed
• B. it must be given a name to identify it
• C. it does not need a name
• D. it only needs a name if it is not going to be printed

Explanation: The first save opens the Save As process, where the file must be given a name and location so it can be identified later. Printing is unrelated to the naming requirement.

286. In database table, what does a column represent?

• A. Attributes
• B. Index
• C. Entity
• D. Relation

Explanation: A column represents an attribute, such as StudentName or DateOfBirth, while a row represents one entity or record. An index is an access structure, and a relation usually refers to the table itself.

287. Data in database at a particular point of time is called as?

• A. Intension
• B. Extension
• C. Back up
• D. Application

Explanation: An extension is the collection of records stored in a database at a particular time, also called the database state or instance. Intension refers to the database schema or structure.

288. A______________is a collection of data organized in a manner that allows access, retrieval and use of that data.

• A. File
• B. Recordset
• C. Database
• D. document

Explanation: A database is an organized collection of related data designed for efficient access, retrieval and use. A file or recordset may hold part of the data, but does not necessarily describe the complete organized collection.

289. SQL stands for ________?

• A. Straight Query Langauge
• B. Structured Query Langauge
• C. Structured Query Laison
• D. Structured Query Linear

Explanation: SQL means Structured Query Language, the standard language used to define, query and manipulate relational databases. The spelling in the options is incorrect, but option b is clearly intended.

290. MS-Access is program for____________?

• A. Presentation
• B. Documentation
• C. Calculation
• D. Data Base

Explanation: MS Access is a relational database management program used to create tables, queries, forms, and reports. Presentation, documentation, and calculation are associated more directly with other Office applications.