Computer — All MCQs
4795 questions available
Q3761.In signal transmission, which hardware process is used to counteract attenuation over long distances?
Correct Answer: B
Amplification increases the signal's strength or amplitude to prevent data degradation or loss (attenuation) as it travels through transmission media.
Q3762.In assembly language programming, the symbolic names or codes used in place of raw binary instructions are called ______?
Correct Answer: B
Mnemonics are English-like abbreviations (e.g., ADD, SUB, MOV) used in assembly language to represent underlying binary machine instructions.
Q3763.In Scratch control blocks, which command is used when a block of code needs to run for a specific, fixed number of times?
Correct Answer: A
The 'Repeat' control block in Scratch executes contained scripts for a specified, pre-determined number of iterations.
Q3764.Which specialized computer utility is responsible for combining compiled object files into a single, runnable executable program?
Correct Answer: C
A Linker merges individual compiled object files (.obj) and external library files to resolve references and produce a final executable (.exe).
Q3765.The 'getche()' C/C++ library function reads a single character from the keyboard and immediately ______ it on the screen.
Correct Answer: B
The getche() function (defined in <conio.h>) reads a character from the keyboard and echoes it back on the console screen without waiting for Enter.
Q3766.In HTML, which tags are used to convert normal text to superscript format?
Correct Answer: B
The <sup> tag defines superscript text, which is displayed slightly above the normal text baseline (e.g., exponents like x2).
Q3767.The very first communication and packet-switching node deployed in ARPANET was a switch called an ______?
Correct Answer: A
The Interface Message Processor (IMP) was a specialized packet-switching gateway used to connect computers on the ARPANET (the early internet) in 1969.
Q3768.What is the primary benefit of utilizing a flowchart during the initial stage of analyzing an algorithm?
Correct Answer: B
A flowchart visually represents process logic, making it easier to audit structure and catch logical errors, missing branches, or dead ends.
Q3769.In digital imaging and computer monitor specifications, resolution is most commonly expressed in ______?
Correct Answer: A
Display and print resolutions are expressed in Pixels per inch (PPI) or Dots per inch (DPI), where higher density yields sharper clarity.
Q3770.In computer programming, loops that are defined and executed inside the body of other loops are called _____ loops.
Correct Answer: C
Nested loops are structures placed inside another loop, commonly used for iterating through multi-dimensional tables or matrices.
Q3771.Which distributed computing model processes and analyzes data directly at or near the source of generation instead of a centralized cloud server?
Correct Answer: A
Edge computing places processing, analysis, and storage resources near the physical location of the data source, lowering latency and bandwidth use.
Q3772.Which high-speed wireless communication technology utilizes visible light waves (from LED bulbs) to transmit digital data?
Correct Answer: A
Li-Fi (Light Fidelity) is a wireless system that modulates light waves from LEDs to transmit high-speed binary data over short distances.
Q3773.Which Microsoft Excel feature is used to selectively display only rows that satisfy a specified condition while hiding the rest?
Correct Answer: C
Filtering isolates specific rows based on custom conditions (e.g., showing only values > 100) while temporarily hiding irrelevant rows.
Q3774.In MS Word, which feature is best suited to find and replace double spaces in a paragraph with single spaces?
Correct Answer: C
The Find and Replace tool (Ctrl + H) is perfect for locating double spaces " " and replacing them with single spaces " " across a document.
Q3775.The standard page size most widely used in modern offices for documents and printing in MS Word is ______?
Correct Answer: C
A4 (210 mm x 297 mm) is the standard international paper size used for business documents, letters, and printing in offices.
Q3776.In MS Word, you can apply consistent formatting (fonts, sizes, colors) across headings and bodies by using ________?
Correct Answer: A
Styles define preset fonts, colors, and paragraph spacing, allowing users to apply and update formatting consistently across a whole document.
Q3777.Which Microsoft PowerPoint slide transition makes slide content appear on screen as if it is being typed letter-by-letter?
Correct Answer: A
The Typewriter animation or transition effect displays characters sequentially to mimic the mechanical typing of text.
Q3778.Which of the following is historically recognized as the first high-level computer programming language?
Correct Answer: D
FORTRAN (Formula Translation) was developed by John Backus's team at IBM in 1957, making it the first high-level compiled language.
Q3779.Because a computer can both read data from and write data to Random Access Memory (RAM), RAM is also referred to as ______ memory.
Correct Answer: B
RAM allows the system to read existing data from memory addresses and write new data back to them, making it Read/Write memory.
Q3780.On a computer system motherboard, which key components are mounted directly onto the board's surface?
Correct Answer: B
The motherboard houses the CPU socket, RAM (memory) slots, and connectors for permanent storage devices and peripherals.