General MCQs

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Q1341.A twisted wire pair (UTP/STP) is most commonly used in the construction of which cabling standard?

Easy
A Optical fiber cable
B Ethernet cable
C Wireless communication
D Coaxial cable
Other PPSC

Correct Answer: B

Ethernet cables (like Cat5e or Cat6) use twisted pairs of copper wires to transmit networking signals and reduce electromagnetic interference.

Q1342.For high-speed data transfer between computer peripherals, which connection standard offers the best performance among these options?

Easy
A USB 2.0
B USB 3.0
C HDMI
D Ethernet
Other PPSC

Correct Answer: B

USB 3.0 is a high-speed peripheral interface standard capable of transfer rates up to 5 Gbps, significantly faster than USB 2.0 (480 Mbps).

Q1343.In word processing and typography, font size is standardly measured in which unit?

Easy
A Pixels
B Points
C Inches
D Centimeters
Other PPSC

Correct Answer: B

Font size is measured in points (pt), where 1 point is equal to 1/72 of an inch.

Q1344.Which of the following is widely recognized as the industry-standard software for professional raster graphics editing and photo manipulation?

Easy
A Adobe Photoshop
B Adobe Illustrator
C Corel Draw
D SketchUp
Other PPSC

Correct Answer: A

Adobe Photoshop is the most widely used software for professional photo editing, image manipulation, and digital painting.

Q1345.Which technology is utilized by optical disk drives (such as CD and DVD players) to read and write digital data?

Easy
A Laser
B Mechanical
C Electrical
D Electro Magnetic
Other PPSC

Correct Answer: A

Compact Discs (CDs) use low-power laser beams in optical drives to detect microscopic pits and lands on the reflective disc surface.

Q1346.In an intrinsic (pure) semiconductor at thermal equilibrium, how does the number of free electrons compare to the number of holes?

Easy
A Equals the number of holes
B Is less than the number of holes
C Is greater than the number of holes
D It depends on the temperature
Other PPSC

Correct Answer: A

In pure (intrinsic) semiconductors, free electrons are generated only by thermal excitation of valence electrons, leaving behind an equal number of holes.

Q1347.Every time a computer boots under MS-DOS, it checks which of the following set of system control files?

Easy
A Command.com, io.sys
B Command.com, date.com, dir.com
C Chkdsk.exe, autoexec.bat
D Command.com, io.sys, msdos.sys
Other PPSC

Correct Answer: D

The three core system files required for an MS-DOS boot sequence are the command interpreter (command.com), the I/O handler (io.sys), and the system kernel (msdos.sys).

Q1348.What rule defines a proper vertex coloring of a graph in computer science?

Easy
A Any two vertices sharing a common edge must NOT have the same color
B Any two vertices sharing a common edge must ALWAYS have the same color
C Every vertex in the graph must have a completely unique and different color
D All vertices in the graph must be colored using a single uniform color
Other PPSC

Correct Answer: A

A proper vertex coloring requires that no two adjacent vertices (connected by an edge) are assigned the same color.

Q1349.We can simulate a non-deterministic Turing machine using a deterministic Turing machine without requiring extra ______?

Easy
A Time
B Space
C Both time and space
D None of the above
Other PPSC

Correct Answer: B

Savitch's theorem implies that a deterministic Turing machine can simulate non-deterministic machines, but doing so without extra space often increases execution time exponentially.

Q1350.What type of control is utilized within a SCADA (Supervisory Control and Data Acquisition) system architecture?

Easy
A Online control
B Direct control
C Supervisory control
D Automatic control
Other PPSC

Correct Answer: C

SCADA systems are designed for high-level supervisory control over distributed industrial systems and automated machinery.

Q1351.Which of the following actions is a Business Intelligence (BI) reporting system unable to perform?

Easy
A Filter data based on criteria
B Group and aggregate data
C Modify or update the underlying source data
D Both filter and group data
Other PPSC

Correct Answer: C

BI reporting systems are designed to retrieve, aggregate, and present data for analysis, but they do not write back or modify the raw source databases.

Q1352.What is the standard administrative distance of the OSPF routing protocol?

Easy
A 90
B 100
C 110
D 120
Other PPSC

Correct Answer: C

OSPF has a default Administrative Distance (AD) of 110. (In comparison, EIGRP is 90, RIP is 120, and static routes have an AD of 1).

Q1353.Which evaluation metric represents the ratio of correctly predicted positive instances to all actual positive instances in a dataset?

Easy
A Accuracy
B Precision
C Recall
D F1 Score
Other PPSC

Correct Answer: C

Recall (also called sensitivity) measures a model's completeness by calculating True Positives divided by the sum of True Positives and False Negatives.

Q1354.Which of the following is NOT a valid Country Code Top-Level Domain (ccTLD)?

Easy
A .In
B .can
C .de
D .cat
Other PPSC

Correct Answer: D

While '.In' (India) and '.de' (Germany) are ccTLDs, '.cat' is a sponsored top-level domain (sTLD) designed for Catalan language and culture.

Q1355.Which situation describes concurrent processes being in a state of deadlock?

Easy
A A process locks a resource while another process terminates normally
B All processes in the system complete execution and terminate
C All involved processes are blocked indefinitely waiting for resources held by each other
D All processes actively attempt to terminate other system operations
Other PPSC

Correct Answer: C

A deadlock occurs when two or more processes cannot proceed because each is waiting for a resource held by another blocked process.

Q1356.What is the numerical base of the octal number system used in computing?

Easy
A 2
B 8
C 6
D 10
Other PPSC

Correct Answer: B

The octal number system is base 8, representing values using exactly eight distinct digits: 0, 1, 2, 3, 4, 5, 6, and 7.

Q1357.In computer science and digital logic, how many unique elements can exist within a Boolean set?

Easy
A 1 element
B 2 elements
C 3 elements
D 4 elements
Other PPSC

Correct Answer: B

A Boolean set contains exactly two elements: 1 (representing True/ON) and 0 (representing False/OFF).

Q1358.For what primary reasons are computers deployed in modern business offices?

Easy
A To reduce manual labor requirements
B To reduce time consumption of administrative tasks
C Both A and B
D None of these
Other PPSC

Correct Answer: C

Office automation via computers aims to minimize physical labor, streamline document workflows, and save operational time.

Q1359.Which technology allows a handwritten document to be scanned and instantly transmitted over phone lines globally?

Easy
A Speed post
B Telex
C Telephone
D Fax
Other PPSC

Correct Answer: D

Facsimile (fax) machines scan printed or handwritten text and transmit the resulting image signals over telephone networks.

Q1360.In asymmetric digital signatures, which cryptographic key is made public and known to everyone?

Easy
A Private key
B Foreign key
C Public key
D Integrity key
Other PPSC

Correct Answer: C

Public keys are distributed openly to allow anyone to verify a signature, whereas private keys must remain strictly confidential.