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COMPUTER AWARENESS MCQ FOR COMPETITIVE EXAMS

Table of Contents

COMPUTER AWARENESS MCQ FOR COMPETITIVE EXAMS

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21.In a database, a column in the table is also called _______
a) Attribute
b) Relation
c) Key
d) Tuple

ANSWER:A

22.In the E-R Diagram, what does the diamond symbol represent?
a) Link between attributes and entity set
b) Attribute
c) Relation between entity set
d) Entity

ANSWER:C

23.Which term is referred as a blueprint of how the database is constructed?
a) Cardinality
b) Primary Key
c) Schema
d) Tuple

ANSWER:C

24.The properly arranged data is called ___
a) Words
b) Sentence
c) Knowledge
d) Information

ANSWER:D

25.Which language can be used by a user to request for the information from a database?
a) Query
b) Relational
c) Compiler
d) None of these

ANSWER:A

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26.Which of the following is not the type of data model in database?
a) Hierarchical
b) Transition
c) Relational
d) Network

ANSWER:B

27.For each attribute of a relation, there is a set of permitted values called?
a) Entity
b) Schema
c) Relation
d) Domain

ANSWER:D

28.In database “Tuple” is referred to?
a) Row
b) Column
c) Table
d) Field

ANSWER:A

29.Which of the following process in DBMS helps to reduce data redundancy in database?
a) Normalization
b) Relational Table
c) Relational Algebra
d) E-R Diagram

ANSWER:A

30.Which among the following option does DBMS helps to achieve?
a) Centralized manner to control data
b) Data independence
c) More redundancy
d) both (a) and (b)

ANSWER:D

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Q31. In MS-DOS 6.22, which part identifies that product uniquely? (a) MS

(b) DOS

(c) Ms – DOS

(d) 6.22

(e) None of these

ANSWER:D

Q32. Who is the father of computers? 

(a) Ada Byron

(b) Charles Babbage

(c) Blaise Pascal

(d) Herman Hollerith

(e) None of these

ANSWER:B  

Q33. Who is the chief of Microsoft?

(a) Babbage

(b) Bill Gates

(c) Bill Clinton

(d) Bush

(e) None of these

ANSWER:B

Q34. An electronic device, operating under the control of instruction that can accept and process the data, produce output and store the results for future use is called _________.

(a) Input

(b) Computer

(c) Software

(d) Hardware

(e) None of these

ANSWER:B  

Q35. Computer gathers data, which means that they allow users to __________ data.

(a) Present

(b) Input

(c) Output

(d) Delete

(e) None of these

ANSWER:B

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Q36. The smallest unit of information, a computer can understand and process is known as ________.

(a) Digit

(b) Byte

(c) Megabyte

(d) Bit

(e) Hertz

ANSWER:D

Q37. Which of the following is not a type of database?

(a) Hierarchical

(b) Relational

(c) Network

(d) Transition

(e) None of the above

ANSWER:D  

Q38. Which among the following is an organised collection of data about a single entity?

(a) file

(b) excel

(c) dictionary

(d) library

(e) None of these

ANSWER:E

Q39. Which of the following is not a DBMS software?

(a) dBase

(b) FoxPro

(c) Oracle

(d) Sybase

(e) Database2000

ANSWER:E  

Q40. DBMS helps to achieve:

(a) data independence

(b) more redundancy

(c) centralized manner to control of data

(d) Both (a) and (c)

(e) None of the above

ANSWER:D

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