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Q1141.What is the primary function and capability of the official Pakistan Railway mobile application?

Easy
A Tracking train schedules and live locations
B Booking and purchasing tickets online
C Checking seat availability across routes
D All of the above
Other PPSC

Correct Answer: D

The Pakistan Railway app provides complete traveler assistance, including seat availability checks, real-time schedule tracking, and e-ticketing.

Q1142.Which official mobile application developed by NADRA is used to apply for national ID verification and domicile certificates in Pakistan?

Easy
A Pak Identity
B NADRA Domicile Portal
C Pak Domicile
D None of these
Other PPSC

Correct Answer: A

The 'Pak Identity' app developed by NADRA allows citizens to verify biometric data and apply for official identity documents online.

Q1143.In word processing and printing, what is the empty margin space added specifically to the binding side of a page called?

Easy
A Gutter Margin
B Parenthesis Margin
C Header Margin
D None of these
Other PPSC

Correct Answer: A

A Gutter margin is extra space added to the left or top margin of a document to ensure text is not hidden or cut off after binding.

Q1144.Which type of non-impact printer utilizes a print head containing thousands of microscopic nozzles to spray liquid ink onto paper?

Easy
A 3D Printer
B Inkjet Printer
C Laser Printer
D Thermal Printer
Other PPSC

Correct Answer: B

Inkjet printers are non-impact devices that spray micro-droplets of liquid ink through tiny print-head nozzles directly onto paper.

Q1145.To produce extremely high-quality hardcopy graphic drawings and precise blueprints in color, which device is preferred?

Easy
A RGB Monitor
B Inkjet Printer
C Plotter
D None of these
Other PPSC

Correct Answer: C

Plotters are specialized output devices used to print large-format, high-resolution vector graphics, line drawings, and architectural blueprints.

Q1146.At their lowest physical level, all modern computer processors store, process, and execute instructions using which number system?

Easy
A Decimal number system
B Binary number system
C Hexadecimal number system
D None of these
Other PPSC

Correct Answer: B

Computer processors are built from digital logic gates that recognize only two electrical states: ON (1) and OFF (0), which is the binary number system.

Q1147.Management Information Systems (MIS) are designed to provide structured data and reports needed for effective decision-making by ______?

Easy
A Managers
B Foremen
C Unskilled workers
D None of these
Other PPSC

Correct Answer: A

MIS compiles operational and transactional data into structured reports to help mid-level and senior managers make informed business and strategic decisions.

Q1148.What is a critical administrative step required when saving a computer file for the very first time?

Easy
A It must be given a unique name to identify it in the system
B A hard copy must be automatically printed
C No name is required, as the system assigns random characters
D None of these
Other PPSC

Correct Answer: A

Saving a file for the first time opens a dialog box prompting the user to name the file and select its storage path for future retrieval.

Q1149.A computer system that is designed to process both continuous analog signals and discrete digital signals is called a ______ computer.

Easy
A Hybrid
B Analogue
C Digital
D None of these
Other PPSC

Correct Answer: A

Hybrid computers combine the logical and numerical speed of digital systems with the continuous modeling capabilities of analog systems.

Q1150.Which peripheral device historically relied on parallel transmission to receive multiple bits of data simultaneously over an LPT port?

Easy
A Keyboard
B Light pen
C Printer
D None of these
Other PPSC

Correct Answer: C

Legacy printers used parallel ports (LPT) to transmit 8 bits of data simultaneously over parallel copper lines to speed up printing.

Q1151.What are the core processing operations executed by a standard computer architecture?

Easy
A Arithmetic calculations
B Logical comparisons
C Storage and retrieval functions
D All the above
Other PPSC

Correct Answer: D

Computers execute 5 basic operations: input, processing (arithmetic and logic), output, storage/retrieval, and control system operations.

Q1152.Alphabet Inc. is widely known as the parent organization of which multinational technology giant?

Easy
A Amazon
B Google
C Microsoft
D None of these
Other PPSC

Correct Answer: B

Alphabet Inc. was established as the restructured parent company of Google and several adjacent subsidiaries on October 2, 2015.

Q1153.Which historical figure was the first to recognize and implement fingerprint identification for document verification and crime investigation?

Easy
A Sir William Herschel
B Gilbert Thomson
C Marcello Malpighi
D None of these
Other PPSC

Correct Answer: A

In 1858, Sir William Herschel implemented fingerprinting in India as a means of document authentication and pioneer crime tracking.

Q1154.What scientific process or methodology does the forensic term 'DACTYLOSCOPY' refer to?

Easy
A De-anonymizing encrypted chat data
B Fingers and fingerprint identification
C Analyzing handwriting patterns
D None of these
Other PPSC

Correct Answer: B

Dactyloscopy is the scientific study and comparison of fingerprint ridges for individual identification and forensic profiling.

Q1155.Which cellular standard is historically characterized by using very small cell towers to maximize frequency reuse in densely populated cities?

Easy
A 2.5G system
B 3G system
C 3.5G system
D None of these
Other PPSC

Correct Answer: A

2.5G networks (such as GPRS) optimized bandwidth in dense urban centers by employing micro-cells with very small geographic coverage.

Q1156.The fundamental GSM cellular standard is based on which type of traffic channels?

Easy
A Connectionless channels
B Packet-switching channels
C Connection-oriented channels
D None of these
Other PPSC

Correct Answer: C

Basic GSM telephony is circuit-switched and connection-oriented, allocating dedicated radio traffic channels to users during calls.

Q1157.In which cellular multiplexing technology is the total frequency spectrum divided into distinct, smaller frequency bands allocated to each user?

Easy
A TDMA (Time Division)
B FDMA (Frequency Division)
C CDMA (Code Division)
D None of these
Other PPSC

Correct Answer: B

FDMA (Frequency Division Multiple Access) divides the available channel bandwidth into distinct non-overlapping frequency bands assigned to users.

Q1158.The fading of received radio signals in mobile communication environments is primarily caused by which phenomenon?

Easy
A Multipath propagation
B Direct line-of-sight propagation
C Bi-Path interference
D None of these
Other PPSC

Correct Answer: A

Multipath propagation occurs when radio signals reflect off structures and reach the receiver at different times, causing phase cancellation and fading.

Q1159.What is the decimal equivalent of the hexadecimal number 1D7F16?

Easy
A 7552
B 7551
C 7553
D None of these
Other PPSC

Correct Answer: B

1D7F in hex = (1 * 16^3) + (13 * 16^2) + (7 * 16^1) + (15 * 16^0) = 4096 + 3328 + 112 + 15 = 7551.

Q1160.In what year was the X Window System (a windowing system for bitmap displays on Unix) first developed?

Easy
A 1990
B 1989
C 1984
D None of these
Other PPSC

Correct Answer: C

The X Window System was initially developed at MIT in 1984 as a graphical user interface framework for Unix-like operating systems.