MCQ Practice

Computer & IT MCQs

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1 nibble equals to ____.

A. 12 bits
B. 16 bits
C. 4 bits
D. 2 bits

Explanation:
One nibble is equal to 4 bits (half a byte).

1 KB (Kilobyte) is equal to ____.

A. 1024 Megabytes
B. 1024 bits
C. 1024 bytes
D. 100 bits

Explanation:
1 KB = 1024 bytes.

1 Gigabyte is equal to ____.

A. 1024 bits
B. 1032 megabytes
C. 1024 kilobytes
D. 1024 megabytes

Explanation:
1 GB = 1024 MB (using binary prefixes).

1 Byte is equal to ____.

A. 8 bits
B. 4 bits
C. 2 bits
D. 9 bits

Explanation:
One byte is the basic unit of digital information and consists of 8 bits.

The first phase of the systems development life cycle is ____.

A. Systems investigation
B. Systems maintenance
C. Systems analysis
D. Systems design

Explanation:
The Systems Development Life Cycle (SDLC) begins with Systems Analysis to understand requirements and problems.

What Cascade Delete option is used for?

A. It is used to delete all the records of all tables in a database
B. It repeats the recent delete operation on all the records of the current table
C. It ensures that all the related records will be deleted automatically when the record from the parent table is deleted
D. None of these

Explanation:
Cascade Delete automatically removes related child records when a parent record is deleted, maintaining referential integrity.

Which function is used to find the string length in “FPSC,” and answers “4”?

A. Len(“FPSC”)
B. Length(“FPSC”)
C. Str(FPSC)
D. None of these

Explanation:
The Len() function returns the number of characters in a string.

In MS Access, in which method do you not need to specify the field type and size when creating a new table?

A. Create a table in Design View
B. Create a table using the wizard
C. Create a table by entering data
D. All of these

Explanation:
“Create Table by Entering data” (Datasheet View) lets Access automatically detect and assign field types.

How can you ensure the security of electronic data in databases?

A. Implementing encryption
B. Using graphic design
C. Regularly updating software
D. Increasing database size

Explanation:
Encryption is the primary method to protect electronic data from unauthorized access.

What is the best way to store electronic record backups?

A. To duplicate the data
B. Paper-based backup
C. Flashing
D. None of these

Explanation:
Duplicating (copying) electronic data to another secure location is the standard and best backup method.

Practice Important Questions

This section provides important MCQs with answers and explanations to help candidates prepare effectively for CSS, PMS, and other competitive exams.

Improve Conceptual Understanding

Each MCQ is designed to strengthen your understanding of key concepts and improve analytical thinking required in exams.

Exam-Oriented Preparation

These MCQs follow actual exam patterns, helping aspirants practice relevant questions and improve performance.

Useful for CSS and PMS Exams

This collection is highly beneficial for CSS, PMS, and other competitive exams, improving accuracy and confidence.