Ch1: Digital devices

Multiple Choice

Which of these devices is most suitable for large-scale data processing?

• a) Mainframe computer

• b) Tablet

• c) Smartphone

• d) Digital camera

Multiple Choice

A mainframe computer is designed for personal everyday tasks.

• True

• False

Multiple Choice

Digital devices always operate using binary (0s and 1s).

• True

• False

Multiple Choice

Desktop computers usually require peripheral devices such as a monitor, printer, and keyboard.

• True

• False

Multiple Choice

A desktop computer is best described as:

• a) A portable device with limited power

• b) A stationary device with high processing power

• c) A handheld digital device

• d) A device only used for communication

Multiple Choice

What does an all-in-one desktop computer combine into a single unit?

• a) CPU and mouse
  

• b) Monitor and PC hardware

• c) Printer and keyboard

• d) Hard drive and speakers

Multiple Choice

Laptops are different from desktop computers mainly because:

• a) They are faster

• b) They are stationary

• c) They are portable

• d) They have more storage

Multiple Choice

A desktop computer is more portable than a laptop.

• True

• False

Multiple Choice

Why are laptops considered portable devices?

• a) They are smaller than smartphones

• b) They include a keyboard, trackpad, screen, and battery in one unit

• c) They must always remain plugged in

• d) They are mainly used for gaming

Multiple Choice

The Raspberry Pi Zero is an example of a single-board computer (SBC).

• True

• False

Multiple Choice

An embedded system in a washing machine is used to:

• a) Manage communication

• b) Control the operation of the device

• c) Store data permanently

• d) Provide internet access

Multiple Choice

Embedded systems are standalone devices not connected to other machines.

• True

• False

Multiple Choice

Which of the following best describes a mainframe computer?

• a) A portable computer used by students

• b) A large, powerful computer for complex tasks and many users

• c) A wearable device with sensors

• d) A single-board computer for education

Multiple Choice

Which device would be MOST appropriate for a traveling student?

• a) Mainframe computer

• b) Laptop

• c) Supercomputer

• d) Desktop PC

Multiple Choice

What does SIM in SIM card stand for?

• a) Subscriber Identity Module

• b) Secure Internet Mode

• c) System Identification Memory

• d) Smart Integrated Microchip

Multiple Choice

Some specialist phones are designed with emergency buttons that call preset contacts until someone answers.

• True

• False

Multiple Choice

Which of the following best describes Wi-Fi?

• a) A wired way to connect to the internet

• b) A type of application for messaging

• c) A way of connecting devices to networks without cables

• d) A specialist accessibility feature for phones

Multiple Choice

A smartwatch is an example of:

• a) An embedded system

• b) A wearable device

• c) A server device

• d) A tablet

Multiple Choice

Which is a common disadvantage of smartphones compared to basic mobile phones?

• a) They cannot run applications

• b) They have longer battery life

• c) They have shorter battery life due to higher power use

• d) They cannot connect to Wi-Fi

Multiple Choice

Which of the following is an example of a digital device?

• a) Smartphone

• b) Bicycle

• c) Ruler

• d) Notebook

Multiple Choice

Smartphones can be used for communication, browsing, and entertainment.

• True

• False

Multiple Choice

Tablets usually have touchscreens instead of physical keyboards.

• True

• False

Drag and Drop

Stationary & powerful​

Placeholder

Touchscreen portable device​

Placeholder

Wearable technology​

Placeholder

Large-scale data processing​

Placeholder

Drag these tiles and drop them in the correct blank above

Desktop computer

Tablet

Smartwatch

Mainframe

Multiple Choice

Some tablets can use SIM cards to connect to mobile networks when Wi-Fi is unavailable.

• True

• False

Multiple Choice

A digital camera is mainly used for:

• a) Playing video games

• b) Capturing and storing images/videos

• c) Managing databases

• d) Browsing the internet

Multiple Choice

Digital cameras use light sensors to capture still images, while camcorders capture moving images.

• True

• False

Multiple Choice

Which factor allows a camera to adjust how much light enters the device?

• a) Lens

• b) Pixel

• c) Image processor

• d) Resolution

Multiple Choice

An image becomes pixelated when:

• a) The frame rate is too high

• b) The number of pixels increases

• c) The image is enlarged and individual pixels become visible

• d) The lens allows too much light

Multiple Choice

Which of the following is the correct way to describe a resolution of 1920 × 1080?

• a) 1920p

• b) 720p

• c) 1080p

• d) 4K

Multiple Choice

Smart televisions can download apps and stream content directly from the internet.

• True

• False

Multiple Choice

What is the main function of a personal video recorder (PVR)?

• a) To amplify sound for speakers

• b) To record broadcasted content for later viewing

• c) To connect smartphones via Bluetooth

• d) To stream music from the internet

Multiple Choice

Which statement is correct about Blu-ray and DVD players?

• a) DVD players can play both Blu-ray and DVD disks

• b) Blu-ray players can usually play DVD disks

• c) Neither Blu-ray nor DVD players support HD content

• d) Only DVD players can play 4K content

Match

Match the device with its primary use:

• • Smartphone

• • Games console

• • Laptop

• • Digital camera

• Communication

• Entertainment

• Portable computing

• Photography

• • Communication

• • Entertainment

• • Portable computing

• • Photography

Multiple Choice

Which device is mainly designed for playing games?

• a) Smartphone

• b) Games console

• c) Desktop computer

• d) Tablet

Multiple Choice

Some games consoles use motion sensors to allow players to control games with gestures.

• True

• False

Multiple Choice

A handheld console usually has:

• a) A built-in screen but less storage and simpler games than full-size consoles

• b) A larger screen and more storage than full-size consoles

• c) No ability to run video games

• d) The same performance as a desktop PC

Multiple Choice

Games consoles cannot connect to the internet.

• True

• False

Multiple Choice

Media players can provide video and audio content to televisions by streaming from the internet or accessing local storage.

• True

• False

Multiple Choice

Which type of storage is most commonly used in personal media players?

• a) Hard disk drive

• b) Flash memory

• c) Magnetic tape

• d) Optical disk

Multiple Choice

GPS itself requires an internet connection in order to function.

• True

• False

Multiple Choice

Which of the following is a function of home automation devices?

• a) Printing documents

• b) Controlling temperature and lighting

• c) Recording television shows

• d) Playing physical media disks

Multiple Choice

Which of the following devices would typically be embedded inside another machine?

• a) Tablet
  

• b) Smartphone

• c) Control system in a microwave

• d) Laptop

Multiple Choice

A smartphone is considered a multifunctional device because it can perform many different tasks.

• True

• False

Multiple Choice

Wearable devices include items such as fitness trackers and smartwatches.

• True

• False

Multiple Choice

What does convergence mean in digital devices?

• a) Devices becoming smaller and lighter

• b) Devices merging designs and features so they become similar

• c) Devices requiring the same type of charger

• d) Devices losing old functions

Multiple Choice

A smartphone that has become larger in size and looks like a tablet is called a:

• a) Miniphone

• b) Netbook

• c) Phablet

• d) Microtablet

Multiple Choice

A digital device can only perform one single task at a time.

• True

• False

Multiple Choice

Which of the following is NOT a type of digital device?

• a) Tablet

• b) Games console

• c) Washing machine

• d) Fountain pen

Multiple Choice

Which of the following best defines connectivity in digital devices?

• a) The ability of a device to store large amounts of data

• b) The ability of a device to connect to networks and other devices

• c) The ability of a device to process information quickly

• d) The ability of a device to run without electricity

Multiple Choice

What does portability of a digital device mainly depend on?

• a) The device’s brand and manufacturer

• b) The speed of its processor

• c) The size and weight of the device

• d) The type of operating system installed

Multiple Choice

What happens when the space in RAM runs out?

• a) The device immediately shuts down

• b) The processor stops executing instructions

• c) The software automatically deletes old programs

• d) The system uses storage as an overflow called virtual memory

Multiple Choice

Which component directly carries out software instructions in a digital device?

• a) Hard disk

• b) Processor

• c) RAM

• d) Virtual memory

Multiple Choice

Inefficient software can slow down the entire system, even if the processor and RAM are fast.

• True

• False

Multiple Choice

What is a program in computing terms?

• A file containing songs or videos

• A set of instructions carried out by the processor

• A storage unit that holds data permanently

• A shortcut to open an application

Multiple Choice

More available storage allows users to save more files and programs, but storage speed does not affect performance.

• True

• False

Multiple Choice

What is the main way users give commands in a Command Line Interface (CLI)?

• Clicking icons with a mouse

• Entering text instructions

• Tapping a touchscreen

• Using voice recognition

Multiple Choice

A Command Line Interface (CLI) is often found on older systems or devices with limited storage because it requires little memory.

• True

• False

Multiple Choice

Why must commands be typed precisely in a Command Line Interface (CLI)?

• a) Because the interface only recognises specific commands

• b) Because the system automatically corrects spelling mistakes

• c) Because the commands are stored as files in memory

• d) Because the interface uses pictures instead of text

Multiple Choice

Most Command Line Interfaces (CLI) include a help menu that explains acceptable commands to the user.

• True

• False

Dropdown

Displays a list of options as menus for the user to select from​

Select answer

Requires typing commands directly into the system​

Select answer

Common real-world example of a menu-driven interface​

Select answer

Easier to use than command line interfaces​

Select answer

​ Can be slower since you must go through menu structures​

Select answer

Match

Match the followingMatch each interface type or feature with its correct description.

• Graphical User Interface (GUI)

• Windows (in GUI)

• Icons

• Menus (in GUI)

• Disadvantage of GUI

Uses windows, icons, and menus controlle

Screen areas dedicated to applications o

Small images representing applications t

Provide options for tasks related to the

Easiest to use, but takes more memory an

• Uses windows, icons, and menus controlle

• Screen areas dedicated to applications o

• Small images representing applications t

• Provide options for tasks related to the

• Easiest to use, but takes more memory an

Drag and Drop

Allows the user to give spoken commands to a device​

Placeholder

Matches spoken words against a library of words​

Placeholder

Often kept online, requiring internet access​

Placeholder

May return incorrect or no match, leading to unwanted results​

Placeholder

Improves accuracy by adapting to the user’s voice over time​

Placeholder

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Voice interface

Voice recognition software

Storage of library

Disadvantage

Learning feature

Multiple Choice

What is one main advantage of a voice interface?

• a) It always works without internet

• b) It allows hands-free operation

• c) It requires typing commands directly

• d) It uses icons and windows

Multiple Choice

Which of the following is an advantage of wired connectivity?

• It is always the cheapest option

• It is faster and more reliable than wireless connectivity

• It completely avoids safety risks

• It requires no cables or setup

Multiple Choice

To back up files means to make a copy of information in case the original is lost or damaged.

• True

• False

Drag and Drop

How easy a device is to carry or move, usually linked to size and weight​

Placeholder

How quickly a device can complete tasks, affected by processor, RAM, and software​

Placeholder

Where files and programs are kept; more space allows more data to be saved​

Placeholder

A device’s ability to connect to networks and other devices (wired or wireless)​

Placeholder

The way users give commands and interact with the device (e.g., CLI, GUI)​

Placeholder

Drag these tiles and drop them in the correct blank above

Portability

Performance

Storage

Connectivity

User Interface

Match

Match each digital device with the feature it is most associated with:

• Desktop Computer

• External Hard Drive

• Smartphone

• Smart TV

• Laptop

Performance (processing power & upgrad

Storage capacity

Multifunctionality & Connectivity

User interface & Connectivity for media

Portability

• Performance (processing power & upgrad

• Storage capacity

• Multifunctionality & Connectivity

• User interface & Connectivity for media

• Portability

Multiple Choice

Which of the following is an example of media that devices can read from or write to?

• Processor

• SD card

• RAM

• Operating system

Multiple Choice

What is one benefit of lower energy consumption in mobile devices?

• Brighter screen quality

• Longer battery life

• Faster processing speed

• Larger storage capacity

Multiple Choice

Which of the following allows users to connect extra devices called peripherals?

• a) Expansion slots only

• b) Virtual memory

• c) USB ports

• d) RAM modules

Multiple Choice

If a device does not have built-in media support, adapters can often provide connectivity to external media.

• True

• False

Multiple Choice

Manufacturers are designing digital devices that consume less energy to save customers money and reduce environmental damage.

• True

• False

Multiple Choice

Some smartphones and tablets include expansion slots for flash memory cards.

• True

• False

Dropdown

Ability to read/write data from storage like SD cards, DVDs, or external drives​ ​

Select answer

Amount of electricity used; lower use improves battery life and sustainability

​

Select answer

Allows installation of additional components or use of ports (USB, slots) for peripherals​

Select answer

How easy a device is to carry or move, linked to its size and weight​

Select answer

Speed and efficiency of a device, influenced by processor, RAM, and software​

Select answer

​How the number 389112 had been calculated

Multiple Choice

Why is a pattern PIN generally considered more secure than a four-digit PIN?

• a) It is faster to enter on the screen

• b) It uses colour coding to prevent errors

• c) It has far more possible combinations

• d) It automatically changes every day

Multiple Choice

How many possible combinations are there in a 4-digit PIN compared to an Android-style pattern PIN on a 3×3 grid?

• a) 10,000 vs 389,112

• b) 9,999 vs 100,000

• c) 1,024 vs 65,536

• d) 1,000 vs 389,112

Multiple Choice

Which of the following is an example of a biometric security feature?

• a) Four-digit PIN

• b) Password with symbols

• c) Apple® Touch ID® fingerprint scanner

• Android-style pattern PIN

Multiple Choice

Which of the following is an example of physical security for digital devices?

• Antivirus software

• Kensington lock

• Encryption software

• Fingerprint scanner

Dropdown

Required before accessing a device to verify the user’s identity​

Select answer

Makes the device inactive until reactivated with a password or PIN​

Select answer

Deletes data from the device after repeated failed login attempts or when triggered​

Select answer

Security method using a swipe pattern across points on a grid​

Select answer

Uses unique physical traits like fingerprints to allow access​

Select answer

Multiple Choice

What does PERIPHERAL mean?

• The extras you have inside your computer.

• The extra hardware you can connect to your computer to make computing easier.

• When you look out of the corners of your eyes.

Multiple Choice

Which of the following is an input peripheral device?

• a) Monitor

• b) Printer

• c) Keyboard

• d) USB flash drive

Match

Match each type of peripheral device with its function:

• Storage

• Output

• Input

Saves data for later use (e.g., USB driv

Displays or outputs data from the comput

Sends data into the computer (e.g., keyb

• Saves data for later use (e.g., USB driv

• Displays or outputs data from the comput

• Sends data into the computer (e.g., keyb

Multiple Choice

Keyboards can only connect to a computer using a wired connection.

• True

• False

Fill in the Blank

A combination of key presses used to access common software commands quickly is called a __________.

Multiple Choice

Why do some people learn to touch-type?

• To use special gaming keyboards

• To avoid looking at the keys and type faster

• To protect passwords

• To reduce electricity use

Multiple Choice

Specialist keyboards can have keys mapped to specific software commands, such as video editing shortcuts.

• True

• False

Multiple Choice

Why were the most commonly used letters spread out on the QWERTY keyboard layout?

• a) To make typing faster for beginners

• b) To match alphabetical order

• c) To reduce jamming of typewriter hammers

• d) To fit more keys on the keyboard

Multiple Choice

Which pointing device uses an optical sensor or sometimes a roller ball to detect movement?

• a) Track pad

• b) Joystick

• c) Mouse

• d) Graphics tablet

Multiple Choice

A tracker ball is rolled to move the pointer and does not have buttons to press.

• True

• False

Multiple Choice

Track pads are often built into desktop computers instead of laptops.

• True

• False

Fill in the Blank

A __________ is a pen-shaped device used with a graphics tablet to draw or write on screen.

Multiple Choice

In gaming, the term sprite refers to:

• A shortcut key combination

• An on-screen graphic such as a character or object

• A special joystick movement

• A mapped keyboard command

Drag and Drop

Moves sprites in computer games​ ​

Placeholder

Built into laptops to save space, responds to finger movements​

Placeholder

Used with a stylus by digital artists and designers​

Placeholder

Reads multiple-choice answer sheets​

Placeholder

Drag these tiles and drop them in the correct blank above

Joystick

Track pad

Graphics tablet

OMR (Optical Mark Recognition)

Multiple Choice

What does OCR (Optical Character Recognition) allow scanners to do?

• a) Read marks on multiple-choice tests

• b) Read printed or written characters and convert them into text

• c) Translate text into different languages

• d) Scan barcodes at supermarket checkouts

Multiple Choice

OMR (Optical Mark Recognition) is commonly used for recognising answers on multiple-choice exam sheets.

• True

• False

Fill in the Blank

A __________ is a pattern of lines and gaps that can be read by devices to identify items, often used on parcels and products.

Multiple Choice

Which of the following is an advantage of matrix (QR) codes over linear barcodes?

• a) They use fewer dots per image

• b) They are only scannable from one direction

• c) They can hold more information and can be scanned from any angle

• d) They replace the need for OCR

Multiple Choice

Which of the following best describes a webcam?

• A high-quality camera used for film-making

• A specialised camera that can stream images or video to the internet

• A portable media player with a lens

• A type of scanner used in security systems

Dropdown

Characters on documents​

Select answer

Marks (such as shaded circles on forms)​ ​

Select answer

Patterns of lines and gaps​ ​

Select answer

Square codes with detailed information​

Select answer

Multiple Choice

Which component in a microphone is responsible for detecting sound waves?

• a) Diaphragm

• b) Sound card

• c) Line-out port

• d) Headphones

Multiple Choice

A microphone converts sound waves directly into a digital signal without the need for a sound card.

• True

• False

Fill in the Blank

A __________ is used to convert the analogue signal from a microphone into a digital signal.

Match

Match the device/port with its correct function:

• Combines a microphone & headphone speaker

• Connects an external audio source to the computer

• Connects external speakers or headphones

• Records voice input

Headset

Line-in port

Line-out port

Microphone port

• Headset

• Line-in port

• Line-out port

• Microphone port

Multiple Choice

What is the main purpose of a headset?

• a) To play video games

• b) To convert analogue signals

• c) To replace a sound card

• d) To combine microphone and headphone speakers

Multiple Choice

Which of the following statements about resistive touch screens is correct?

• a) They are less durable than capacitive touch screens

• b) They are harder to read because more layers reflect more light

• c) They are suitable for multi-touch applications

• d) They work because humans are conductive

Multiple Choice

Capacitive touch screens can detect multiple touches at once, making them suitable for multi-touch applications.

• True

• False

Fill in the Blank

A capacitive touch screen works because humans are __________, allowing small electrical charges to flow away when touched.

Multiple Choice

Which type of touch screen is commonly used in smartphones?

• a) Resistive

• b) Magnetic

• c) Optical

• d) Capacitive

Multiple Choice

Which biometric scanner reads the structure of a human face to identify an individual?

• a) Fingerprint recognition

• b) Facial recognition

• c) Iris recognition

• d) Voice recognition

Multiple Choice

What makes iris recognition more reliable than fingerprint recognition?

• a) It is cheaper to implement

• b) It is not affected by diseases

• c) It provides 120 times more detailed scans

• d) It is faster to process

Multiple Choice

Fingerprint recognition scans can be affected by injuries or diseases.

• True

• False

Multiple Choice

Biometric scanners are less expensive to produce than passwords or PINs.

• True

• False

Multiple Choice

Why is iris recognition considered more reliable than fingerprint recognition?

• a) It is faster to scan and process

• b) It does not require special equipment

• c) It captures 120 times more detail than a fingerprint

• d) It works even without user cooperation

Multiple Choice

Voice recognition scanners compare a voice print against a stored original to check for a match.

• True

• False

Multiple Choice

What does facial recognition technology identify to verify an individual?

• The structure of their face

• The shape and movement of their hands

• The sound of their voice

• The pattern of their iris

Match

Match each biometric scanner with its function:

• Compares structural features to differentiate one individual from another.

• Identifies a person by the pitch, tone, and patterns captured through a microphone.

• Analyzes the unique circular patterns in the colored part of the eye, highly detailed.

• Uses unique ridge patterns such as arches, loops, or whorls.

Facial recognition

Voice recognition

Iris recognition

Fingerprint recognition

• Facial recognition

• Voice recognition

• Iris recognition

• Fingerprint recognition

Dropdown

Can be affected by background noise or illness such as a sore throat.​

Select answer

Requires the user to be directly in front of a scanner; can be less reliable with changes in appearance.​ ​

Select answer

Highly accurate because of unique eye patterns, but requires special equipment and is expensive.​

Select answer

Easy to use but can be affected by cuts, burns, or skin conditions.​

Select answer

Multiple Choice

Which of the following is considered the least secure method of storing data on a card?

• a) Programmable chip

• b) Magnetic strip

• c) Biometric scan

• d) PIN entry system

Multiple Choice

A programmable chip on a card can only be read when the correct PIN is entered.

• True

• False

Multiple Choice

The data on a magnetic strip can easily be stolen by criminals without the card owner’s knowledge.

• True

• False

Multiple Choice

Which of the following best describes RFID tags?

• They are used only in magnetic stripe cards

• They contain a unique identification number linked to a database

• They cannot be included in smartphones or key fobs

• They require physical contact to work

Multiple Choice

Which of the following is a major disadvantage of using magnetic strip cards?

• They are expensive to produce

• Data can be easily stolen by criminals

• They cannot store any data

• They are not compatible with card readers

Drag and Drop

Wireless short-range communication, often used in smartphones and key fobs​

Placeholder

Least secure method, data can be stolen easily​

Placeholder

Requires correct PIN entry for secure access​

Placeholder

Drag these tiles and drop them in the correct blank above

RFID/NFC

Magnetic Strip

Programmable Chip

Multiple Choice

What is the main function of sensors in smart devices?

• a) To store data permanently

• b) To input data automatically without human action

• c) To display information on screens

• d) To transfer files between devices

Multiple Choice

Sensors in smart homes require constant human action to input data.

• True

• False

Match

Match each sensor with its function:

• Detects ultraviolet radiation

• Detects body or object movement

• Measures heat levels in the environment

• Detects brightness levels

UV sensor

Motion sensor

Temperature sensor

Light sensor

• UV sensor

• Motion sensor

• Temperature sensor

• Light sensor

Multiple Choice

Which of the following is NOT a benefit of using sensors?

• They can be placed in dangerous places

• They always require human supervision

• They can monitor continually

• They reduce human error

Multiple Choice

Sensors can detect small changes that humans may not be able to sense, such as pressure or gas levels.

• True

• False

Drag and Drop

Monitors brightness​

Placeholder

Measures air or water content​

Placeholder

Detects force applied​

Placeholder

Detects how close an object is​

Placeholder

Drag these tiles and drop them in the correct blank above

Light sensor

Moisture and humidity sensor

Pressure sensor

Proximity sensor

Multiple Choice

Which of the following best describes the role of sensors in aircraft cockpits?

• a) To entertain passengers with movies and music

• b) To display flight data to the crew for monitoring and decision-making

• c) To replace pilots entirely with automatic systems

• d) To increase fuel consumption for long flights

Multiple Choice

Which of the following is not an example of an output peripheral form?

• a) Electronic display

• b) Printed text

• c) Audio

• d) Barcode scanner

Multiple Choice

Which of the following is not a feature of a computer monitor?

• a) Screen size measured diagonally

• b) Resolution measured in pixels

• c) Ability to go into low-power standby mode

• d) Printing text onto paper

Multiple Choice

Dot matrix printers are called impact printers because they print by pressing ink through a ribbon onto paper.

• True

• False

Multiple Choice

What do inkjet printers use to create images and text on paper?

• a) Heated plastic layers

• b) Cartridges that spray tiny dots of liquid ink

• c) Electrically charged toner powder

• d) Impact through a ribbon of ink

Multiple Choice

Which of the following is a key feature of a laser printer?

• a) Uses cartridges containing cyan, magenta, and yellow inks

• b) Makes copies using carbon copy layers

• c) Uses toner and a rotating drum with electrical charge

• d) Sprays liquid ink directly onto the paper

Fill in the Blank

3D printers create objects by adding layers of __________ material from the bottom of the model to the top.

Match

Match the printer type with its typical use:

• Making multiple copies with carbon copy paper

• High-volume printing in offices

• Creating physical prototypes and models

• Home printing and photographs

Dot Matrix

Laser

3D Printer

Inkjet

• Dot Matrix

• Laser

• 3D Printer

• Inkjet

Multiple Choice

Who would be most likely to use a plotter?

• a) Gamers

• b) Cartographers

• c) Teachers

• d) Shoppers

Multiple Choice

Which feature of a data projector allows the image to be made larger by enlarging part of the image itself?

• a) Light bulb brightness

• b) Resolution

• c) Digital zoom

• d) Portability

Multiple Choice

Which feature of a data projector measures how bright the projected image is?

• a) Resolution

• b) Optical zoom

• c) Light bulb brightness

• d) Portability

Multiple Choice

Which type of zoom enlarges the image by adjusting the lens?

• a) Resolution zoom

• d) Digital zoom

• b) Screen zoom

• b) Optical zoom

Multiple Choice

What is required to produce stereo sound?

• a) A single speaker

• b) Two speakers, one for each side

• c) Surround sound system

• d) A subwoofer

Multiple Choice

A single speaker is usually used to provide high-quality stereo feedback.

• True

• False

Multiple Choice

What is required to provide stereo sound?

• Two speakers (left and right)

• One speaker

• Surround sound system

• A subwoofer

Multiple Choice

Surround sound uses four or more speakers to make sound feel like it comes from all around the viewer

• True

• False

Multiple Choice

A special amplifier is required to deliver different levels of sound to each speaker in a surround sound system.

• True

• False

Match

Match the following

• Comes from two sides (left and right)

• Comes from a single speaker

• Comes from four or more sides

Stereo sound

Mono sound

Surround sound

• Stereo sound

• Mono sound

• Surround sound

Multiple Choice

Which of the following is NOT an example of a control device?

• Motor

• Heater

• Printer

• Valve

Multiple Choice

Nanorobots are made of:

• Large mechanical parts

• Tiny sensors and actuators

• Speakers and amplifiers

• Optical lenses

Multiple Choice

Which of the following is a potential application of nanorobots?

• Projecting presentations

• Playing stereo sound

• Assisting surgeons in precise operations

• Cooling electronic devices

Multiple Choice

one advantage of using nanorobots in medical surgery is:
They allow doctors to make smaller incisions and more precise movements.

• True

• False

Multiple Choice

Which of the following is NOT a use of secondary storage?

• A) Storing documents for future use

• B) Acting as virtual memory

• C) Holding applications to be loaded into RAM

• D) Executing instructions directly like a CPU

Multiple Choice

What does it mean when secondary storage is described as "non-volatile"?

• It loses data when power is off

• It changes frequently and unpredictably

• It retains data even when power is off

• It is faster than RAM

Multiple Choice

A storage device contains the storage media and accesses the data stored on it.

• True

• False

Multiple Choice

Which of the following is an example of internal storage?

• USB flash drive

• Hard disk drive (HDD)

• External Blu-ray drive

• Network-attached storage (NAS)

Multiple Choice

Which of these is an example of external storage?

• A) Blu-ray drive

• B) RAM

• C) Processor

• D) Virtual memory

Multiple Choice

Optical disk drives are always compatible with older media.

• True

• False

Match

Match the storage type with its description:

• Contains flash memory media, no moving parts

• Connects via Wi-Fi or Ethernet for shared storage

• Contains hard disk media, connects to motherboard directly or via USB

• Contains optical media such as DVDs or Blu-rays

Solid state drive (SSD)

Network-attached storage (NAS)

Hard disk drive (HDD)

Optical disk drive

• Solid state drive (SSD)

• Network-attached storage (NAS)

• Hard disk drive (HDD)

• Optical disk drive

Match

Match the following

• The ability of new drives to read older media formats

• Space on a computer for storing instructions temporarily when RAM is full

• The main circuit in a computer with connectors for components

Backwards compatibility

Virtual memory

Motherboard

• Backwards compatibility

• Virtual memory

• Motherboard

Multiple Choice

What is the typical average seek time for a read/write head on a hard disk?

• 1–3 milliseconds

• 4–15 milliseconds

• 20–30 milliseconds

• 50–70 milliseconds

Match

Match the following

• Part of a disk drive that moves across the platters to read or write data

• Time it takes for a read/write head to locate the area on the disk

• Rod around which something spins

• Circular plates that make up a cylinder in a hard disk

Read/Write Head

Seek Time

Spindle

Platters

• Read/Write Head

• Seek Time

• Spindle

• Platters

Multiple Choice

The read/write head of a hard disk transforms electrical current into a magnetic field when writing data.

• True

• False

Multiple Choice

The typical spin speeds of hard disk platters are between 540 and 1200 revolutions per minute (rpm).

• True

• False

Multiple Choice

Which optical media type can store the greatest amount of data on a double-sided disk?

• CD

• DVD

• Blu-ray

Match

Match the optical media with its storage capacity on a single-sided disk:

• 25 GB

• 4.7 GB

• 700 MB

Blu-ray

DVD

CD

• Blu-ray

• DVD

• CD

Multiple Choice

Which type of optical media uses violet laser light to store data at a greater density?

• CD

• DVD

• Blu-ray

• Flash drive

Multiple Choice

Which optical media uses the smallest laser spot size, allowing it to store the most data on a single disk?

• CD

• DVD

• Blu-ray

• CD-R

Multiple Choice

Flash media have no moving parts, which makes them less likely to fail when moved around.

• True

• False

Multiple Choice

Originally, magnetic tape was designed to:

• Store video recordings

• Record sound

• Store software programs

• Store images

Multiple Choice

Which type of media offers the fastest data access speed?

• Hard Disk

• Flash Media

• Optical Media

• Magnetic Tape

Multiple Choice

Magnetic tape is suitable for portable use.

• True

• False

Match

Match each type of media with its correct characteristic:

• Lowest cost per GB, used for whole system backups and archives

• Fastest data access speed, used in laptops and mobile devices

• Slow data access, used for music, games, and file backups

• Fast data access, used in servers and backups

Magnetic Tape

Flash Media

Optical Media

Hard Disk

• Magnetic Tape

• Flash Media

• Optical Media

• Hard Disk

Match

Match each storage media type to how it represents data (0 and 1):

• Changes the magnetic charge of a tape to positive or negative

• Tiny bumps on the disk’s surface

• Changes the magnetic charge of a platter to positive or negative

• Different levels of electrical charge in tiny cells

Magnetic Tape

Optical Media

Hard Disk

Flash Media

• Magnetic Tape

• Optical Media

• Hard Disk

• Flash Media

Multiple Choice

Which unit of storage capacity represents 1,000,000,000 bytes?

• a) Kilobyte (KB)

• b) Gigabyte (GB)

• c) Megabyte (MB)

• d) Terabyte (TB)