Computer — All MCQs

4795 questions available

Showing 2121–2140 of 4795

Q2121.Which of the following is a type of non-volatile storage device that is used to store data permanently, even when the power is turned off?

Easy
A ROM
B RAM
C CPU
D None of these
Computer Basics PPSC

Correct Answer: A

ROM (Read Only Memory) is a non-volatile memory that retains its contents permanently without power.

Q2122.Who is considered the world's first programmer?

Easy
A Steve Wozniak
B Alan Turing
C Ada Lovelace
D None of these
Computer Networks PPSC

Correct Answer: C

Ada Lovelace wrote the first algorithm intended for execution by Babbage's Analytical Engine.

Q2123.In SQL, which command is used to remove a table?

Easy
A DELETE
B DROP TABLE
C REMOVE TABLE
D None of these
Computer Terminology PPSC

Correct Answer: B

DROP TABLE permanently deletes a table structure and all its data from the database.

Q2124.Which of the following storage devices has no moving (rotating) parts and is known for its shock resistance?

Easy
A Magnetic Tape
B Hard Drive
C Optical Drive
D Solid-State Drive (SSD)
General MCQs PPSC

Correct Answer: D

Solid-State Drives (SSDs) use flash memory and have no moving parts, providing shock resistance.

Q2125.What does the term HTTPS mean?

Easy
A Hyper Text Transfer Protocol Secure
B Hyper Text Translation Protocol Service
C Hyper Text Translation Protocol Secure
D Hyper Text Transfer Protocol Service
Internet & Web PPSC

Correct Answer: A

HTTPS stands for Hyper Text Transfer Protocol Secure, which encrypts communications via SSL/TLS.

Q2126.Which testing does NOT affect or “hurt” previous coding, design, and other elements of a software?

Easy
A Regression Testing
B Unit Testing
C Alpha Testing
D None of these
General MCQs PPSC

Correct Answer: A

Regression testing ensures that new updates or bug fixes do not disrupt existing functionality.

Q2127.Which sorting algorithm is the fastest in the average case?

Easy
A Quick Sort
B Merge Sort
C Bubble Sort
D None of these
Computer Terminology PPSC

Correct Answer: A

Quick Sort is highly efficient in practice with an average-case complexity of O(n log n).

Q2128.What is the effect of data compression?

Easy
A Deletes data permanently
B Increases file size
C Decreases file size
D None of these
General MCQs PPSC

Correct Answer: C

Data compression reduces redundant data, thereby decreasing file size.

Q2129.Which one of the following is NOT a characteristic of cloud computing?

Easy
A On-demand self-service
B Broad network access
C Resource pooling
D Manual data processing
Internet & Web PPSC

Correct Answer: D

Manual data processing is not a cloud characteristic; cloud computing is automated.

Q2130.In a Database table, a single row will be called?

Easy
A Field
B Record
C Data type
D None of these
Computer Terminology PPSC

Correct Answer: B

A single row in a database table is called a Record, representing one entity instance.

Q2131.Which testing method is used for combining old and new systems?

Easy
A Unit Testing
B Integration Testing
C System Testing
D None of these
General MCQs PPSC

Correct Answer: B

Integration testing combines and tests different modules or systems to ensure they work together.

Q2132.What is the Turing Test?

Easy
A A test to determine if a machine can show human-like intelligence
B A test to measure computer speed
C A test to check internet security
D None of these
Internet & Web PPSC

Correct Answer: A

The Turing Test measures whether a machine can exhibit behavior indistinguishable from a human.

Q2133.Which protocol deals with resolving domain names?

Easy
A HTTP
B FTP
C DNS
D None of these
Internet & Web PPSC

Correct Answer: C

DNS (Domain Name System) translates human-readable domain names into numerical IP addresses.

Q2134.The authority associated with assigning IP addresses globally is?

Easy
A ICANN
B IANA
C IEEE
D None of these
Computer Networks PPSC

Correct Answer: B

IANA (Internet Assigned Numbers Authority) manages global IP address allocation.

Q2135.Which type of bus provides a path to transfer data between CPU and memory?

Easy
A Data Bus
B Control Bus
C Address Bus
D None of these
Computer Basics PPSC

Correct Answer: A

The Data Bus transfers actual data (operands, values) between the CPU and memory.

Q2136.Ransomware attack is an attack which performs?

Easy
A Deletes all hardware components
B Encrypts data and demands ransom for access
C Improves system speed
D None of these
Computer Security PPSC

Correct Answer: B

Ransomware is malicious software that encrypts user files and demands payment to decrypt them.

Q2137.Database normalization reduces?

Easy
A Tables
B Data redundancy
C Data size
D None of these
Computer Terminology PPSC

Correct Answer: B

Normalization organizes database schemas to minimize duplicate data and data redundancy.

Q2138.Who is the father of personal computer?

Easy
A Charles Babbage
B Edward Roberts
C Alan Turing
D None of these
Computer Networks PPSC

Correct Answer: B

Edward Roberts is widely recognized as the father of the Personal Computer.

Q2139.Which of the following is an online cloud service?

Easy
A MS Word
B OneDrive
C Notepad
D Paint
MS Word PPSC

Correct Answer: B

OneDrive is Microsoft's cloud-based storage service for saving and sharing files online.

Q2140.Which is NOT a type of testing?

Easy
A Unit Testing
B Integration Testing
C System Testing
D Compilation Testing
General MCQs PPSC

Correct Answer: D

Compilation is a code translation process, not a valid software testing level.