Computer Basics
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Q461.Which of the following computers are most powerful and used in research laboratories?
Correct Answer: A
Supercomputers are the most powerful computing systems on Earth, designed for complex scientific modeling in advanced labs.
Q462.Which of the following is the correct statement to print a string in C programming?
Correct Answer: C
The standard library function used to output strings on the console in C programming is printf().
Q463.If you have to remove some error from PROM (Programmable Read-Only Memory), which of the following technique you will use?
Correct Answer: A
Because Programmable Read-Only Memory (PROM) can only be flashed and written to once, any encountered program errors cannot be removed.
Q464.Which of the following is a drawback of using a batch processing system?
Correct Answer: C
Because batch systems run programs sequentially without interactive user oversight, any erroneous or undesired commands in the batch are executed unconditionally.
Q465.Which of the following is a main advantage of Spooling?
Correct Answer: C
Spooling (Simultaneous Peripheral Operations On-Line) offloads data transmission streams onto buffer files, minimizing CPU intervention in slow I/O transfers.
Q466.File Manager is _____ program.
Correct Answer: B
A file manager is classified as a utility program, providing tools to organize, copy, rename, delete, and manage files on local storage.
Q467.In BASIC programming, _____ command is used to clear screen.
Correct Answer: B
The CLS command is used in BASIC and DOS environments to clear all characters from the console screen.
Q468.In _____ topology, data is communicated in one direction from node to node.
Correct Answer: B
In a Ring network topology, data packets travel sequentially in a single direction from one node to the next in a closed loop.
Q469.Which supports rate from 100 Kbps to 4 Mbps?
Correct Answer: A
Infrared (IR) wireless communication supports short-range, line-of-sight data transfer rates ranging between 100 Kbps and 4 Mbps.
Q470.The data transmission speed in _____ cable is from 10 Mbps to 200 Mbps.
Correct Answer: C
Coaxial cabling typically supports data transmission speeds ranging from 10 Mbps up to 200 Mbps over medium distances.
Q471.Based on speed, size and performance digital computers are classified into _____ types.
Correct Answer: B
Digital computer systems are categorized into exactly 4 size classes: Microcomputers, Minicomputers, Mainframes, and Supercomputers.
Q472.The gate whose output is 0 when all the inputs are 1 is called _____ gate.
Correct Answer: C
A NAND gate outputs 0 only if all of its inputs are 1; otherwise, it outputs 1 (behaving as the logical negation of an AND gate).
Q473.In C programming, the symbol used for logical AND operator in a statement is _____?
Correct Answer: B
The double ampersand (&&) is the logical AND operator in C, whereas a single ampersand (&) is the bitwise AND operator.
Q474.A program that combines different library files to object files to generate executable file is called ______?
Correct Answer: C
A linker is system utility software that links object files with library modules to build a final executable file (.exe).
Q475.Flash memory is a specific type of ______?
Correct Answer: A
Flash memory is a solid-state, non-volatile storage technology derived from EEPROM (Electrically Erasable Programmable Read-Only Memory).
Q476.The encoding path on optical disks is ______ most track.
Correct Answer: B
Data on optical discs (like CDs and DVDs) is written as a single, continuous spiral track starting from the innermost zone and extending outward.
Q477.DDR3, SDRAM reads or writes ______ words of data per clock cycle.
Correct Answer: B
DDR3 SDRAM utilizes an 8n-prefetch architecture, allowing it to transfer 8 data words per clock cycle (Double Data Rate).
Q478.L3 cache is ______?
Correct Answer: A
L3 cache is shared across CPU cores and is slower and larger than L2 cache, but still significantly faster than system RAM.
Q479.Which of the following is NOT a characteristic of magnetic memory?
Correct Answer: D
Magnetic memory (like Hard Disks) is read-write, allowing users to modify stored data, unlike read-only memory media.
Q480.In C programming, preprocessor directives start with _____ character.
Correct Answer: C
All preprocessor directives in C (like #include, #define, #ifdef) must begin with the hash (#) symbol at the start of the line.