Computer Basics
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Q321.Touch Screen is _____?
Correct Answer: C
A touch screen serves as an input device by registering touches, and an output device by displaying visual graphics on the same surface.
Q322.__________ performs the computer data processing functions.
Correct Answer: B
The Arithmetic Logic Unit (ALU) is the core component of the CPU that performs all mathematical computations, data transformations, and logical comparisons.
Q323.What parameter is used to specify data transfer speed?
Correct Answer: B
Data transfer speed is measured in Bps (Bits per second), with modern high-speed connections utilizing Mbps or Gbps.
Q324.ARP stands for what?
Correct Answer: A
ARP stands for Address Resolution Protocol, which maps IP addresses to physical MAC addresses on a local network.
Q325.A song being played on a computer is an example of _____?
Correct Answer: C
A song being played converts digital bits into sound waves, representing an output operation produced by the computer's audio system.
Q326.Which is the largest hardware company in the world?
Correct Answer: A
Apple Inc., co-founded by Steve Jobs and Steve Wozniak, is recognized as the world's largest consumer electronics and computer hardware company by revenue.
Q327.Which of following is not hardware?
Correct Answer: A
Compiler (which translates code) and Windows XP (an operating system) are software, while CPU, RAM, and hard disks are physical computer hardware.
Q328.There are two different ways to insert content from one application into another i.e. embedding and_____?
Correct Answer: A
Microsoft OLE (Object Linking and Embedding) provides two primary ways to share data: embedding (storing data directly in the file) and linking (referencing a source file).
Q329.When overriding function which of following should be the same in base and derived class?
Correct Answer: C
In object-oriented function overriding, both the function name and its return type must remain identical between the base and derived classes.
Q330.When overloading functions which of the following must be different?
Correct Answer: D
Function overloading requires multiple functions to share the exact same name but have distinct parameter lists (differing in argument type or count).
Q331.When overloading functions which of the following should be the same?
Correct Answer: A
The defining characteristic of overloaded functions is that they share the exact same function name.
Q332.User stories are derived from which of the following diagrams?
Correct Answer: C
User stories capture software requirements from an actor's perspective, which is conceptually modeled and mapped using Use Case Diagrams.
Q333.Data type int occupies 4 bytes in memory, writing unsigned before int increases its ______?
Correct Answer: A
Declaring an integer as 'unsigned' does not change its memory size (4 bytes), but shifts and increases its positive numeric range from ~2 billion to ~4.29 billion.
Q334.What is ROM?
Correct Answer: B
ROM (Read-Only Memory) is a type of computer hardware chip. It contains permanently stored startup instructions called firmware.
Q335.Which device both sends data to and receives data from a computer?
Correct Answer: C
An Input/Output device allows two-way communication between the computer and the user (e.g., modems, touchscreens).
Q336.In the IPOS data cycle, a webcam belongs to which stage?
Correct Answer: A
A webcam is an input device that captures video data and sends it to the computer for processing.
Q337.Which type of computer is most commonly used in typical scientific laboratories for data logging?
Correct Answer: A
Typical laboratories use desktops and laptops, which are classified as microcomputers, to run software and log data.
Q338.A USB flash drive is primarily used for ______?
Correct Answer: A
A USB (Universal Serial Bus) flash drive is a portable secondary storage device used for data backup and transfer.
Q339.The system software required to enable an OS to communicate with physical hardware is a _____?
Correct Answer: B
A device driver is a specialized system program that acts as a translator between the OS and hardware.
Q340.A combination of exactly 16 bits in computer memory is known as a _____?
Correct Answer: D
In 16-bit computer architectures, a 'word' consists of 16 bits (equivalent to 2 bytes). A nibble has 4 bits.