40 Computer Science questions answers

Computer Science Questions and Answers : Computer Science MCQ with detailed explanations for students & freshers preparing for entrance exams .Computer Science always plays an important role in the exam and proves to be effective in getting your good marks. Today in this post we are giving you important questions and their answers of Computer Science Objective GK Questions and Answers.IN this website we provide free and knowledgeable Practice MCQ Questions NCERT, Engineering Technical, Quantitative Aptitude, General knowledge, Reasoning, and Current Affairs for Competitive Exam so please read another article.

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These Computer MCQ most important for many exam like – State TET, UPTET, CTET, MPTET, REET. If you prepare competitive exam you read other article . Computer Science questions and answers with explanations are provided for your competitive exams and entrance tests. Here in this article you read 40 Computer Science Question Answer.

computer science mcq for competitive exams

Computer science mcq for competitive exams

Q. The term “SQL” stands for

  1. Standard query language
  2. Sequential query language
  3. Structured query language
  4. Server-side query language

Answer :- (C)

Explanation: The term “SQL” stands for the structured query language, which is one of the most widely, used programming languages for relational databases.

Q. What is DBMS?

(A) DBMS is a collection of queries
(B) DBMS is a high-level language
(C) DBMS is a programming language
(D) DBMS stores, modifies and retrieves data

Answer: d
Explanation: DBMS is nothing but a storehouse wherein the authorized user can create a database to store, modify or retrieve the organized data in the table. It can be modified or retrieved by users who have access to DBMS only.

Q. Who created the first DBMS?

(A) Edgar Frank Codd
(B) Charles Bachman
(C) Charles Babbage
(D) Sharon B. Codd

Answer: b
Charles Bachman along with his team invented the first DBMS known as Integrated Data Store (IDS.

Q. Which of the following is a function of the DBMS?

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(A) Storing data
(B) Providing molti-users access control
(C) Data Integrity
(D) All of the above

Answer: d

Q. Which of the following is a component of the DBMS?

(A) Data
(B) Data Languages
(C) Data Manager
(D) All of the above

Answer: d

Hardware, Software, Data, Database Access Language, Procedures and Users all together form the components of a DBMS.

Q. What does an RDBMS consist of?

(A) Collection of Records
(B) Collection of Keys
(C) Collection of Tables
(D) Collection of Fields

Answer: c

Q. _______ topology requires a moltipoint connection.

(A) Star
(B) Mesh
(C) Ring
(D) Bus

Answer: d

Q. Users write the programs in which language?

  1. Low-level Language
  2. High-Level Language
  3. Decimal-Format
  4. Middle-Level Language

Answer :- (B). High-Level Language

Q. Which of the following file is an output of the assembler?

  1. Program file
  2. Object file
  3. Data File
  4. Task File

Answer :- (B). Object File

Q. Parsing is categorized into how many types?

  1. three types
  2. four types
  3. two types
  4. five types

Answer :- (C). two types

Q. Which of the following function is called the canonical collection of LR(0 item.

  1. FIRST
  2. GOTO
  3. COMPUTE
  4. FolLOW

Answer :- (B). GOTO

Q. DFA is an abbreviation of.

  1. Non Deterministic Finite set Automata
  2. Deterministic Finite Automata
  3. Non Deterministic Finite Automata
  4. Deterministic Finite set Automata

Answer :- (B). Deterministic Finite Automata

Q. NFA is an abbreviation of.

  1. Non Deterministic Finite set Automata
  2. Deterministic Finite Automata
  3. Non Deterministic Finite Automata
  4. Deterministic Finite set Automata

Answer :- (C). Non Deterministic Finite Automata

Q. The main reason for transition from IPv4 to IPv6 is _________

(A) Huge number of systems on the internet
(B) Very low number of system on the internet
(C) Providing standard address
(D) To provide faster internet

Answer: a

Q. Data communication system spanning states, countries, or the whole world is ________

(A) LAN
(B) WAN
(C) MAN
(D) PAN

Answer: b
Explanation: WAN is the abbreviation for Wide Area Network.

Q. Data communication system within a building or campus is________

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(A) LAN
(B) WAN
(C) MAN
(D) PAN

Answer: a

Q. Which one of the following refers to the total view of the database content?

  1. Conceptual view
  2. Physical view
  3. Internal view
  4. External view

Answer :- (A)

Q. A computer security protocol for logging-in can be considered as the example of the ______ component of an information system.

  1. Data
  2. Software
  3. Procedure
  4. Hardware

Answer :- (C)

Q. A computer security protocol for logging-in can be considered as the example of the ______ component of an information system.

  1. Data
  2. Software
  3. Procedure
  4. Hardware

Answer :- (C)

Q. Which one of the following keyword is used to find out the number of values in a column?

  1. TOTAL
  2. COUNT
  3. SUM
  4. ADD

Answer :- (B)

Explanation: The “COUNT” keyword is used to find the total number of values inside a column. So whenever a user wants to find the total values in a column, he can use the keyword “COUNT”.

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