Junior Computer Operator Solved Past Paper 2025 PDF

★ Computer / IT: MS Office, Windows OS, hardware, networking, typing, basic programming & DBMS
★ English: Basic grammar, vocabulary, synonyms/antonyms, comprehension
★ Analytical Reasoning: Logic, patterns, series, problem solving
★ Quantitative Reasoning: Basic math, percentages, ratios, simple algebra & geometry
★ General Knowledge: Pakistan Affairs + Islamic Studies

★ Computer / IT
Q1: Electronic digital circuits are also called:
Ans: Logic gates
Q2: The true potential of optical fiber is fully exploited when multiple beams of light at different frequencies are transmitted on the:
Ans: Same Fiber
Q3: The long-distance carrier system provided in the ___________ and throughout the world is designed to transmit voice band signals.
Ans: USA
Q4: Trunks on long-haul networks is/are:
Ans: All of these (Coaxial, Microwave, High-capacity fiber)
Q5: A common application of multiplexing is in __________ communications.
Ans: Long-Haul
Q6: __________ refers to mechanisms to detect and correct errors that occur in the transmission of frames.
Ans: Error control
Q7: The basic function performed by a computer is _________ of a program.
Ans: Execution
Q8: The UNIVAC was the __________ successful commercial computer.
Ans: First
Q9: The 1950s saw the birth of the computer industry with two companies ________ dominating the marketplace:
Ans: Sperry and IBM
Q10: __________ is some mechanism that provides for communication among the control unit, ALU, and registers.
Ans: CPU interconnection
Q11: ________ moves data between the computer and its external environment.
Ans: Input/Output
Q12: The basic function/functions that a computer can perform is/are:
Ans: All of these (Data processing, storage, movement and control)
Q13: ___________ is the way in which the components are interrelated.
Ans: Structure
Q14: Contemporary computers contain ___________ of elementary electronic components.
Ans: Millions
Q15: In a class of computers called _____________, the relationship between architecture and organization is very close.
Ans: Microcomputer
Q16: In the _________, the creation of the World Wide Web led to an explosion in the popularity of distributed computing.
Ans: 1990s
Q17: Berners-Lee also implemented the HTTP to form the communications backbone, which he called:
Ans: WWW
Q18: In systems with virtual memory, programs are able to address more memory locations than are actually provided in main memory, also called:
Ans: Both A & B (Real and Physical memory context)
Q19: The designers of the Multics system were the first to use the term ________ to describe a program in execution.
Ans: Process
Q20: The General Motors Research Laboratories implemented the first operating systems in early ___________ for their IBM 701.
Ans: 1950s
Q21: Once a structure variable has been defined, its members can be accessed using the:
Ans: Dot operator
Q22: There are ___________ kinds of casts in standard C++.
Ans: Four
Q23: In C++, ‘\f’ escape sequence is used for:
Ans: Formfeeding
Q24: In C++, ‘\b’ escape sequence is used for:
Ans: Backspace
Q25: Member functions in C++ are called:
Ans: Methods
Q26: In MS-Word, the ruler helps to:
Ans: All (Page margin, indents, tabs)
Q27: Being able to _________ your own types is called extensibility.
Ans: Create
Q28: The register capable of shifting information either to the right or to the left is termed as:
Ans: Shift register
Q29: A sequential circuit whose behavior can be defined at discrete instants of time:
Ans: Synchronous
Q30: A binary parallel adder is a digital function that produces the arithmetic __________ of two binary numbers.
Ans: Sum
Q31: A combinational circuit consists of:
Ans: All of these (Input variables, Logic gates, Output variables)
Q32: The Paste Special command lets you copy and paste:
Ans: The resulting values of a formula instead of the actual formula
Q33: Good voice reproduction via PCM can be achieved with 128 quantization levels, or ____________ coding.
Ans: 7-bit
Q34: Analog data in electrical form __________ transmitted as baseband signals.
Ans: Can be
Q35: Coaxial cable consists of ____________ conductors.
Ans: Two
Q36: For point-to-point analog signaling, a bandwidth of up to about _________ is possible.
Ans: 1 MHz
Q37: _________________ takes the incoming data from the receiver.
Ans: Destination
Q38: The basic building of any communications facility is the:
Ans: Transmission line
Q39: ______________ device generates the data to be transmitted.
Ans: Source
Q40: In OSI model, when data is sent from A to B, the fifth layer to receive data at B is:
Ans: Session layer
Q41: A program written in a non-machine language is called:
Ans: Source program
Q42: Each type of computer has its own machine language which consists of:
Ans: Both A & B (Ones and Zeros)
Q43: Machine language and Assembly language are examples of:
Ans: Low-level language
Q44: Most C compilers use Integrated Development Environment (IDE) to ______ simple programs.
Ans: All of these (Write, Compile and Debug)
Q45: A High-Level Language is much more powerful than _________ language.
Ans: Assembly Language
Q46: The machine language is quite close to:
Ans: Hardware
Q47: A “C” program consists of function/functions:
Ans: Both A & B (One or more)
Q48: Each node in star topology is connected to a ____________ minicomputer/hub.
Ans: Central
Q49: A byte is a combination of:
Ans: Both A & B (8 bits or 2 Nibbles)
Q50: __________ is the collection of physical parts of computer system working during processing:
Ans: Hardware

Section 2: English Grammar & Vocabulary

Q51: This has been a turbulent week for the government. Nearest meaning of turbulent:
Ans: Disturbance
Q52: How many daily prayers are there?
Ans: 3 (Fajr, Maghrib, Isha)
Q53: Dad met a man with whom he used to work. (Identify clause):
Ans: Adjective clause
Q54: Choose the word opposite in meaning to CORPULENT:
Ans: Thin
Q55: Program upgradation refers to:
Ans: Program enhancement
Q56: A set of rules of a language for writing a program is called:
Ans: Syntax
Q57: The process of writing a program by using any language is called:
Ans: Coding
Q58: Synonym of ‘Virtue’:
Ans: Quality
Q59: A semaphore merely is referred to a:
Ans: Variable
Q60: In OSI model, as the data packet moves from lower to upper layer, headers are:
Ans: Removed
Q61: The strcpy() function arguments are:
Ans: 2 parameters
Q62: A pointer variable may be initialized with:
Ans: Any address in memory
Q63: Scope of variable refers to:
Ans: Accessibility of variable
Q64: Which page replacement algorithm suffers from Belady’s anomaly?
Ans: FIFO
Q65: A user mode program can invoke OS services by:
Ans: System call
Q66: An address generated by CPU is referred as a:
Ans: Logical address
Q67: The ascending order of data hierarchy is:
Ans: Bit → Byte → Field → Record → File → Database
Q68: Which of the following is the faster translator software?
Ans: Compiler
Q69: The translator used for C/C++ language is called:
Ans: Compiler
Q70: The Quran provides guidance for:
Ans: Every aspect of life
Q71: The functionalities of the presentation layer include:
Ans: All (Compression, Encryption, Description)
Q72: What data type will you select to store classroom ID if there are 125 rooms max?
Ans: Integer (Byte)
Q73: When a fully copied database is copied to multiple sites, it is known as:
Ans: Replicated database
Q74: Prophet ﷺ passed away at which place?
Ans: Hazrat Ayesha’s chamber
Q75: Knowledge should be acquired from mother’s lap to where?
Ans: Grave
Q76: Who was the leader of the trading caravan?
Ans: Abu Sufyan
Q77: She tried to obliterate all his memory. Opposite of obliterate:
Ans: Create
Q78: How many obligatory parts are there in Ghusl (Bath)?
Ans: 3
Q79: Opposite meaning of integration:
Ans: Separate
Q80: Bewilderment nearest meaning:
Ans: Puzzled
Q81: Correct meaning of sagacity:
Ans: Wisdom
Q82: Which ASP.Net Object encapsulates the state of the client?
Ans: Session object
Q83: His diving catch took my breath away. Nearest meaning:
Ans: To astonish
Q84: Antonym of demonic:
Ans: Angelic
Q85: Antonym of solace:
Ans: Annoy
Q86: He refused to render aid. Meaning of render:
Ans: Provide
Q87: Function that is not a member of class but can access private members:
Ans: Friend
Q88: Synonym of consternation:
Ans: Dismay
Q89: After the snow began he sat very quietly. Identify the part:
Ans: Adverbial phrase
Q90: Narration: He said to him, “I will talk on this topic tomorrow.”
Ans: He told him that he would talk on that topic the next day
Q91: Passive: The mother bird bought food for her kids.
Ans: Food was bought by the mother bird for her kids
Q92: Record of all activity affecting database content is:
Ans: Transaction log
Q93: PHP syntax is closed with:
Ans: Java and C++ (style context)
Q94: Delimiting and synchronization of data exchange is provided by:
Ans: Session layer
Q95: In Internet protocol stack, the 5th layer to receive data at B is:
Ans: Application layer (counting from bottom)
Q96: Narration: He said, “Alas I have lost the competition.”
Ans: He exclaimed with sadness that he had lost the competition
Q97: The biggest planet is:
Ans: Jupiter
Q98: Passive: The team is presenting new techniques.
Ans: New techniques are being presented by the team
Q99: “The thing to do first is an activity you enjoy.” Identify phrase:
Ans: Infinitive phrase
Q100: “That he spoke many good words” is a:
Ans: Noun clause

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