Computers and IT MCQs
Computer Awareness Questions and Quiz for Banking, IBPS, RRB, RBI, SBI, NABARD examinations of 2024-2025. Computer Awareness MCQs for Competitive Exams. GKToday Computer Awareness for IBPS PO, IBPS Clerk, Bank PO, Bank Clerk and other entrance / competitive examinations.
21. Which of the following terms is used for a software that is built from an existing program?
[A] Brownfield
[B] Greenfield
[C] Pre-existing
[D] None of the Above
Show Answer
Correct Answer: A [Brownfield]
Notes:
Brownfield software development is software that is built from an existing program. It may be contrasted with “Greenfield” development, which involves creating a software program from scratch.
22. Which of the following is true about ADA?
[A] It is a structured & Object Oriented based High level Programming language.
[B] It was designed by Jean Ichbaih of CII Honeywell Bull.
[C] Both a and b
[D] None of the Above
Show Answer
Correct Answer: C [Both a and b]
Notes:
ADA is a structured & Object Oriented based High level Programming language.ADA language was designed for embedded and real time systems.
23. Which of the following is used as an application programming interface with RDBMS?
[A] VB
[B] COBOL
[C] SQL
[D] All of the Above
Show Answer
Correct Answer: C [SQL]
Notes:
With relational DBMSs known as RDBMSs, the Application programming interface is SQL.SQL a standard programming language for defining, protecting and accessing data in a RDBMS.
24. Which among the following are the basic components of a relational database model?
[A] Table
[B] Record
[C] Field
[D] All of the Above
Show Answer
Correct Answer: D [All of the Above]
Notes:
In the relational database model, data is stored in relations, more commonly known as tables. Tables, records (sometimes known as tuples), and fields (sometimes known as attributes) are the basic components of a RDBMS.
25. What is the name given to the view of database that appears to an application program?
[A] Schema
[B] Metadata
[C] Front end
[D] Subschema
Show Answer
Correct Answer: D [Subschema]
Notes:
The subschema is the logical description of that section of the database which is relevant and available to an application. A subschema is a subset of the schema and inherits the same property that a schema has.
26. Data query languages are computer languages used to make queries in databases and information systems.Which among the following are the the Query Languages?
[A] Atomese
[B] Cypher
[C] Datalog
[D] All of the Above
Show Answer
Correct Answer: D [All of the Above]
Notes:
Atomese is the graph query language for the OpenCog graph database.Cypher is a query language for the Neo4j graph database.Datalog is a query language for deductive databases.
27. Which of the following is the final step when it has determined that a transaction has been completed successfully?
[A] Rollback
[B] Commit
[C] Transit
[D] None of the Above
Show Answer
Correct Answer: B [Commit]
Notes:
A commit is the final step in the successful completion of a previously started database change as part of handling a transaction in a computing system.
28. Which one of the following is the first scientist to bring the idea of Personal Area Network?
[A] Nickey Jobs
[B] Hardley Jesley
[C] Thomas Zimmerman
[D] None of the Above
Show Answer
Correct Answer: C [Thomas Zimmerman]
Notes:
Thomas Zimmerman was the first research scientist to bring the idea of the Personal Area Network. Personal Area Network covers an area of 30 feet
29. Which among the following correctly defines a Wide Area Network?
[A] A Wide Area Network is quite bigger network than the LAN.
[B] The internet is one of the biggest WAN in the world.
[C] In a WAN network, messages are transmitted fast.
[D] All of the Above
Show Answer
Correct Answer: D [All of the Above]
Notes:
A Wide Area Network is not limited to a single location, but it spans over a large geographical area through a telephone line, fiber optic cable or satellite links.
30. Which one of the following devices converts digital signal to analog signal and vice versa?
[A] Switch
[B] Router
[C] Modem
[D] Bridge
Show Answer
Correct Answer: C [Modem]
Notes:
Modem is a device that converts digital signal to analog signal as a modulator and analog signal to digital signal as a demodulator. Asynchronous modem uses start and stop bit for synchronization instead of clock.
