All Free Software Engineering MCQs with Answers

• A. system units
• B. output devices
• C. storage components
• D. Input devices

Explanation: The system unit contains the processor and other core components that process data.

• A. Gigabyte
• B. Terabyte
• C. Petabyte
• D. Megabyte

Explanation: Among the listed units, a petabyte is the largest: 1 petabyte is 1,024 terabytes in the usual binary-based convention.

• A. motherboard
• B. system unit
• C. peripheral
• D. input device

Explanation: The system unit is the computer’s case or enclosure containing the motherboard, processor, memory, and other central electronic…

• A. Octal digits
• B. Binary digits
• C. Hexadecimal digits
• D. Decimal digits

Explanation: Digital computers represent instructions, numbers, letters, and other data using binary digits, 0 and 1, because their electronic circuits…

• A. Performs the primary storage function
• B. Is the only chip cound in most PC models
• C. Performs the arithmatic-logic and control functions
• D. Almost always operates on by-bits of data at a time

Explanation: The microprocessor acts as the CPU, carrying out arithmetic and logical operations and controlling instruction execution.

• A. Mainframe computers
• B. Supercomputers
• C. Minicomputers
• D. Microcomputers

Explanation: EBCDIC is an 8-bit character-coding system historically associated with IBM mainframe computers.

• A. Icon
• B. Screen
• C. Keys
• D. Menu

Explanation: The individual letters, numbers, and symbols pressed on a keyboard are keys.

• A. computer forensics
• B. forecasting
• C. robotics
• D. simulation

Explanation: Robotics uses computer-controlled machines or devices to carry out physical actions, including highly precise surgical procedures.

• A. millions of instructions per second
• B. multiple instructions per second
• C. megabytes of instructions per seconds
• D. millions input processor set

Explanation: MIPS expands to millions of instructions per second, a rough measure of processor instruction throughput.

• A. Keyboard, monitor and hard drive
• B. System unit, input / output and memory
• C. System unit, input / output and secondary storage
• D. System unit, primary storage and secondary storage

Explanation: The standard three hardware categories are the system unit, input/output devices, and secondary storage.

• A. Scanner, Printer and Monitor
• B. Keyboard, Printer and Monitor
• C. Mouse, Printer and Monitor
• D. Plotter, Printer and Monitor

Explanation: A plotter, printer, and monitor all produce output, so they are output devices.

• A. bridge
• B. firewall
• C. router
• D. none of these

Explanation: A router examines packet destination information and forwards the packet between different networks.

• A. protocol architecture
• B. protocol stack
• C. protocol suit
• D. none of these

Explanation: A protocol stack is the ordered collection of protocols used at the successive layers of a networking model.

• A. analog modulation
• B. digital modulation
• C. multiplexing
• D. none of these

Explanation: Multiplexing combines multiple signals so they can share one communication channel, with the signals separated again at the receiving end.

• A. digital modulation
• B. amplitude modulation
• C. frequency modulation
• D. phase modulation

Explanation: Digital modulation represents digital bits by changing an analog carrier's characteristics, such as amplitude, frequency, or phase.

• A. TCP
• B. UDP
• C. Both A and B
• D. none of these

Explanation: TCP and UDP both operate at the transport layer of the Internet protocol suite.

• A. Caps lock
• B. Tab
• C. Enter
• D. Esc

Explanation: The Enter key submits typed information or executes the selected command, so it is commonly used to enter data into a computer.

• A. Arrow key
• B. Space bar
• C. Escape key
• D. Return key

Explanation: The Escape key is commonly used to cancel an operation, close a menu, or exit a program or full-screen mode.

• A. digital
• B. analog
• C. classic
• D. film

Explanation: A digital camera records images electronically in a digital format, allowing them to be transferred to a computer and edited with graphics…

• A. William Oughtred
• B. Gottfried Leibnitz
• C. Blaise Pascal
• D. Charles Babbage

Explanation: Blaise Pascal built the Pascaline in the 1640s, widely regarded in standard computer-history questions as the first mechanical calculating…