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Test Prep / introduction to computer science - Computer Basic

introduction to computer science - Computer Basic

Practice test covering 50 questions in 35 minutes. All questions are multiple-choice.

The introduction to computer science - Computer Basic is designed to help students practice with exam-style questions and improve their test-taking skills. This practice test covers 50 questions in 35 minutes, allowing learners to experience the format and timing of real assessments while identifying areas that need further review.

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1

Which of the following best describes the main role of system software?

A:Perform specific user tasks like word processing
B:Control, integrate, and manage hardware components
C:Store data permanently for future use
D:Provide input to the computer
2

Which classification of computer can support many hundreds or thousands of users simultaneously?

A:Minicomputer
B:Supercomputer
C:Personal Computer
D:Mainframe
3

What distinguishes a workstation from a personal computer?

A:Workstations have less powerful microprocessors
B:Workstations are multi-user systems
C:Workstations have more powerful microprocessors and higher-quality monitors
D:Workstations cannot run standard PC software
4

What is the primary function of the input unit in a computer system?

A:To process data into information
B:To store data temporarily
C:To accept data and convert it into a form the computer can use
D:To generate output for the user
5

Which of the following is NOT typically considered an input device?

A:Scanner
B:Joystick
C:Printer
D:Webcam
6

Which of the following storage units is the largest in capacity?

A:Kilobyte (KB)
B:Megabyte (MB)
C:Gigabyte (GB)
D:Terabyte (TB)
7

What is the main reason RAM is considered 'random access' memory?

A:It stores data permanently
B:It allows data to be accessed in any order directly
C:It only stores data sequentially
D:It is slower than secondary storage
8

Which of the following computer types is designed primarily to perform hundreds of millions of instructions per second?

A:Minicomputer
B:Supercomputer
C:Mainframe
D:Workstation
9

Which type of software is typically a suite of related but independent programs sharing common interface and data formats?

A:Operating System
B:Application Software
C:System Software
D:Utility Software
10

How many bits are there in 10 bytes of data?

A:80 bits
B:100 bits
C:8 bits
D:10 bits
11

Which component stores instructions and data temporarily for the processor and is volatile in nature?

A:ROM
B:RAM
C:Hard Disk
D:Flash Memory
12

Which component of the CPU is responsible for executing arithmetic and logical operations?

A:Control Unit
B:Registers
C:ALU (Arithmetic Logic Unit)
D:Cache Memory
13

What is the key function of the Control Unit (CU) within the CPU?

A:Store data temporarily
B:Execute arithmetic operations
C:Control and coordinate computer components
D:Manage secondary storage
14

Which of the following best describes the purpose of registers in a CPU?

A:Permanent storage for programs
B:Stores data to be executed next with very fast access
C:Holds secondary storage data
D:Translates input data to machine code
15

What type of memory would store the BIOS firmware of a computer?

A:RAM
B:ROM
C:Cache
D:Flash Memory
16

What is the main difference between RAM and ROM in terms of data retention?

A:RAM is non-volatile; ROM is volatile
B:Both RAM and ROM are volatile
C:RAM is volatile; ROM is non-volatile
D:Both RAM and ROM are non-volatile
17

Which type of computer memory is described as 'random access' because any memory cell can be accessed directly if the address is known?

A:ROM
B:Cache
C:RAM
D:Flash Memory
18

How does a flash disk differ from a traditional hard disk drive?

A:Flash disks use mechanical platters; hard disks do not
B:Flash disks have no mechanical platters or access arms, unlike hard disks
C:Hard disks use flash memory chips; flash disks use magnetic surfaces
D:Both flash disks and hard disks use optical laser technology
19

Which optical media type can store the largest amount of data?

A:CD
B:DVD
C:Blu-ray Disc
D:Floppy Disk
20

What is the correct sequence of the five main functions carried out by a digital computer?

A:Input, Process, Store, Output, Control
B:Input, Store, Process, Output, Control
C:Process, Input, Store, Output, Control
D:Store, Input, Process, Output, Control
21

In terms of speed, which unit correctly represents one billion cycles per second for a CPU?

A:1 MHz
B:1 GHz
C:1 kHz
D:1 THz
22

Which of the following correctly converts 3 MB into bits?

A:3,145,728 bits
B:25,165,824 bits
C:3,072,000 bits
D:24,576,000 bits
23

Which of the following is NOT a typical function of the Control Unit (CU)?

A:Reading the next instruction code
B:Incrementing the program counter
C:Executing arithmetic operations
D:Reading data required by instructions from memory
24

Which of these devices converts electronically generated information into a form understandable by humans?

A:Input Device
B:Output Device
C:Storage Device
D:Processor
25

What distinguishes a netbook from a traditional laptop computer?

A:Netbooks are more powerful and expensive
B:Netbooks are designed for portability and are less powerful and cheaper
C:Netbooks have larger screens and keyboards
D:Netbooks do not support internet access
26

Which storage unit is closest in size to the amount of data stored in a typical pocket book's text?

A:4 KB
B:120 KB
C:3 MB
D:650 MB
27

What is the main advantage of an optical disk drive (ODD) in terms of data storage?

A:Uses electromagnetic surfaces to store data
B:Uses laser light to read and write data
C:Is volatile and loses data when powered off
D:Stores data on flash memory chips
28

Which of the following output devices is best suited for producing large-format drawings and blueprints?

A:Monitor
B:Plotter
C:Printer
D:Speaker
29

What differentiates primary memory from secondary memory?

A:Primary memory is permanent storage; secondary memory is temporary
B:Primary memory is volatile; secondary memory is non-volatile
C:Secondary memory is faster to access than primary memory
D:Primary memory stores data magnetically; secondary stores data electronically
30

Which of the following is NOT an example of system software?

A:Unix
B:Mac OSX
C:Microsoft Word
D:Linux
31

Which type of computer is specifically designed to be extremely portable and primarily used for media consumption rather than productivity tasks?

A:Laptop
B:Workstation
C:Tablet
D:Mainframe
32

What is the purpose of the program counter in a CPU controlled by the Control Unit?

A:Stores data for future use
B:Points to the next instruction to be executed
C:Executes arithmetic operations
D:Stores temporary input data
33

Which storage device stores data electromagnetically on spinning surfaces?

A:Hard Disk Drive
B:Flash Disk
C:Optical Disk
D:RAM
34

Which term correctly describes the collection of physical elements of a computer system?

A:Software
B:Hardware
C:Firmware
D:Middleware
35

What distinguishes application software from system software?

A:Application software controls hardware components
B:Application software is used to perform specific user tasks
C:System software is used for running spreadsheets
D:System software is optional for computer operation
36

Which type of computer is typically used by a single user but has a more powerful microprocessor than a personal computer?

A:Supercomputer
B:Mainframe
C:Workstation
D:Minicomputer
37

Which of these devices translates data from human-understandable form to machine-understandable form?

A:Output device
B:Input device
C:Storage device
D:Processor
38

What is a primary characteristic of ROM compared to RAM?

A:ROM is volatile and used for temporary storage
B:ROM is permanent and non-modifiable storage
C:ROM can be written to frequently by the CPU
D:ROM stores user data temporarily
39

Which output device uses liquid crystal technology to display images?

A:CRT Monitor
B:LCD Monitor
C:Plotter
D:Printer
40

Why is RAM considered volatile memory?

A:Because it can be accessed randomly
B:Because data is lost when power is turned off
C:Because it stores data permanently
D:Because it uses electromagnetic surfaces
41

Which of the following best defines a mobile device?

A:A large multi-user computer system
B:A handheld computer designed for portability
C:A desktop computer with a touch screen
D:A stationary workstation
42

What is the main function of a secondary storage unit?

A:Temporary data storage for running programs
B:Permanent storage of data and programs retained when power is off
C:Processing data into information
D:Controlling input and output devices
43

Which device is primarily used to convert sound into digital signals for computer processing?

A:Scanner
B:Webcam
C:Microphone
D:Joystick
44

What does the unit 'Hertz' (Hz) measure in computer systems?

A:Amount of data storage
B:Speed of CPU cycles per second
C:Number of instructions in a program
D:Voltage of the power supply
45

Which device is specifically designed to read barcodes and feed data into a computer system?

A:Barcode reader
B:Scanner
C:Joystick
D:Touchpad
46

Which output device would be used to produce a hard copy of a document with high-quality text and images?

A:Dot Matrix Printer
B:Ink Jet Printer
C:Speaker
D:Webcam
47

What is the function of the ALU in processing logical operations?

A:Store data temporarily
B:Perform arithmetic calculations only
C:Compare numbers, letters, or special characters
D:Control input and output devices
48

Which of the following is NOT a characteristic of a minicomputer?

A:Supports multiple users simultaneously
B:Capable of supporting 10 to hundreds of users
C:Generally less powerful than a mainframe
D:Designed for single-user personal tasks
49

Which of these is NOT a type of printer mentioned in the content?

A:Laser Printer
B:Ink Jet Printer
C:Dot Matrix Printer
D:Thermal Printer
50

Which computer classification is most suitable for large corporations requiring high processing power and multi-user support?

A:Personal Computer
B:Minicomputer
C:Mainframe
D:Netbook
51

What is a key difference between tablet computers and smartphones based on the content?

A:Tablets have keyboards, smartphones do not
B:Smartphones are designed primarily for phone service and internet access
C:Tablets cannot access the internet
D:Smartphones have larger screens than tablets
52

Which storage unit corresponds to approximately one page of text?

A:4 KB
B:90 bytes
C:120 KB
D:3 MB
53

Which input device allows users to draw or handwrite directly into the computer system?

A:Graphics Tablet
B:Barcode Reader
C:Joystick
D:Touchpad
54

What is the main purpose of a secondary storage unit in a computer system?

A:To temporarily store data during processing
B:To permanently store data and programs for future use
C:To execute instructions
D:To control input devices
55

Which of the following is NOT a major category of software?

A:System Software
B:Application Software
C:Middleware
D:Operating System
56

Why is the QWERTY keyboard the most common standard keyboard?

A:It has the least number of keys
B:It is designed for most efficient typing speed
C:It is the most widely adopted keyboard layout globally
D:It supports multiple languages automatically
57

Which of the following is NOT a function of the CPU?

A:Accept data as input
B:Process data into information
C:Control computer operations
D:Generate output directly to user
58

Which of the following best explains why flash disks are faster than traditional hard disks?

A:Flash disks use spinning platters for faster access
B:Flash disks have no moving parts, enabling quicker data access
C:Hard disks use solid-state technology
D:Flash disks store data magnetically
59

Which output device can convert electronic data into microfilm for archival purposes?

A:Printer
B:Plotter
C:Computer Output Microfilm (COM)
D:Monitor
60

Which of the following is a key feature of mobile devices compared to laptops?

A:They have larger displays
B:They are designed to be extremely portable and handheld
C:They require external power at all times
D:They cannot access the internet
61

What type of CPU register temporarily holds data and instructions required for the next operation?

A:Program Counter
B:Accumulator
C:General Purpose Registers
D:Registers
62

Which computer classification is typically designed for single-user with a microprocessor and includes keyboard, monitor, and storage device?

A:Workstation
B:Personal Computer
C:Mainframe
D:Minicomputer
63

Which of the following is NOT an example of application software?

A:Spreadsheet
B:Operating System
C:Image Viewer
D:Text Processing System
64

What is the primary reason a CPU speed measured in MHz is less than in GHz?

A:MHz measures millions of cycles per second, GHz measures billions
B:MHz measures billions of cycles, GHz measures millions
C:MHz is a unit of storage, GHz is a unit of time
D:MHz and GHz measure the same speed differently
65

Which input device is primarily used to capture live video for computer processing?

A:Scanner
B:Webcam
C:Barcode reader
D:Joystick