Computer — All MCQs
4795 questions available
Q3861.In software engineering, what is the primary purpose of an Application Programming Interface (API)?
Correct Answer: B
An API acts as a software intermediary, allowing two distinct applications to interact, request services, and share data.
Q3862.What is the primary network purpose of the 'Dynamic Host Configuration Protocol' (DHCP)?
Correct Answer: B
DHCP is a network protocol that automatically assigns IP addresses, gateways, and subnet masks to joining client devices.
Q3863.Which historical figure was the first to recognize and implement fingerprint identification for document verification and crime investigation?
Correct Answer: A
In 1858, Sir William Herschel implemented fingerprinting in India as a means of document authentication and pioneer crime tracking.
Q3864.What scientific process or methodology does the forensic term 'DACTYLOSCOPY' refer to?
Correct Answer: B
Dactyloscopy is the scientific study and comparison of fingerprint ridges for individual identification and forensic profiling.
Q3865.Which historical figure is widely regarded as the primary pioneer who conceptualized and developed the design for the modern programmable computer?
Correct Answer: C
Charles Babbage conceptualized and designed the first mechanical programmable computer (the Analytical Engine) in the 1830s.
Q3866.The primary storage memory of a computer is commonly measured in Kilobytes or Megabytes. A single byte consists of exactly how many binary digits?
Correct Answer: B
A byte is a unit of digital data that consists of exactly 8 bits (binary digits 0 or 1).
Q3867.On a computer hardware architecture, the key components that process data (like the CPU and registers) are physically housed inside the ______?
Correct Answer: A
The system unit is the main enclosure or chassis that houses the central motherboard, CPU, RAM, and internal storage devices.
Q3868.One Kilobyte (1 KB) in computer memory is equivalent to exactly how many bytes?
Correct Answer: B
In binary computing, memory capacity is measured in powers of two. 1 Kilobyte is 2^10 = 1024 bytes.
Q3869.What collective category do computer viruses, Trojan horses, and worms belong to?
Correct Answer: B
Viruses, Trojans, and worms are malicious software programs collectively categorized as malware because they are written to damage or exploit systems.
Q3870.In computing and binary representations, a continuous string of eight '0' and '1' digits is called a _____?
Correct Answer: B
A single quinary binary value is a bit. A grouping of eight sequential bits represents one byte.
Q3871.Which electronic component serves as the most basic digital memory device by storing a single bit of binary data?
Correct Answer: C
A flip-flop (or latch) is a bistable multivibrator circuit used in computer registers and static memory to store a single bit (0 or 1).
Q3872.Which of the following is a document-formatting language rather than a web browser application?
Correct Answer: A
HTML (HyperText Markup Language) is the standard markup language used to structure web pages. Chrome and IE are web browsers that render HTML.
Q3873.At their native machine level, digital computers represent and process all quantitative data using which language?
Correct Answer: A
Computers rely on binary machine language (0s and 1s) to represent instructions and store data.
Q3874.What term is used in computer science to denote raw data that has been processed, structured, and presented in a meaningful format?
Correct Answer: A
Raw data represents unorganized facts. Once compiled, processed, and organized into a meaningful context, it becomes Information.
Q3875.Which miniature tag technology, when placed on books in a library, allows a database to automatically track the books' physical movements?
Correct Answer: B
RFID tags use radio-frequency electromagnetic fields to automatically identify and track tags attached to objects (like books).
Q3876.Which specialized tool is used in software development to translate high-level program statements into native machine-level binary code?
Correct Answer: A
Language translators like compilers and interpreters compile human-readable high-level code into executable machine-level binary code.
Q3877.Which system firmware is responsible for providing initial hardware boot directions when a computer is powered on?
Correct Answer: A
The BIOS initializes and tests system hardware (POST) and loads the operating system bootloader from storage into RAM.
Q3878.In the Android mobile operating system, what is 'offline synchronization'?
Correct Answer: A
Offline synchronization allows a mobile application to store changes locally when offline and sync them to servers once internet is restored.
Q3879.Which permissions must be requested in an Android application's manifest file to access the user's location?
Correct Answer: A
Android requires ACCESS_COARSE_LOCATION (for approximate coordinates) and ACCESS_FINE_LOCATION (for precise GPS-based coordinates).
Q3880.In Android software engineering, what represents the primary difference between a Service and a Thread?
Correct Answer: B
An Android Service is a background component with no UI that, by default, executes on the application's main thread. Threads are separate tasks.