WorksheetsUNIT 1: THE DIGITAL WORLD — Cover Page
Total questions: 96
Worksheet time: 48mins
Retrieval Activity 1 – Keyword Match‑Up: In the Keyword Match‑Up table, choose the correct definition for the term Digital.
Data represented by binary values
Reducing file size for storage or transmission
Continuous data like sound or light waves
Number of bits used per sample
Retrieval Activity 1 – Keyword Match‑Up: In the Keyword Match‑Up table, choose the correct definition for the term Sampling.
Measuring the signal at regular intervals
Converting sampled values into binary numbers
Data represented by binary values
Number of bits used per sample
Retrieval Activity 2 – Fill‑in‑the‑Blanks: Analogue data must be converted into digital using a process called ________.
analogue to digital conversion (ADC)
digital sampling (DS)
binary expansion (BE)
signal modulation (SM)
Retrieval Activity 2 – Fill‑in‑the‑Blanks: The signal is measured at regular intervals called the ________ rate.
sample
bit
frame
quantisation
Retrieval Activity 2 – Fill‑in‑the‑Blanks: Each measurement is converted to a binary number during ________.
quantisation
sampling
compression
modulation
Retrieval Activity 2 – Fill‑in‑the‑Blanks: Increasing bit depth improves ________ but increases ________.
quality; file size
speed; latency
resolution; frame rate
storage life; cost of devices
Retrieval Activity 2 – Fill‑in‑the‑Blanks: Lossy compression removes data permanently, while ________ compression keeps all original data.
lossless
variable
temporal
predictive
Exam Practice: Explain how sound is represented digitally. (4 marks)
It is sampled at regular intervals, each sample’s amplitude is quantised to a set number of bits, producing a stream of binary values
The entire analogue waveform is stored as a continuous curve requiring infinite precision
Microphone signals are saved directly to magnetic tape without conversion
A single frequency value is saved for each second of audio instead of samples
Exam Practice: Describe one advantage and one disadvantage of storing data digitally. (4 marks)
High capacity and easy copying; can be easily corrupted by malware or hardware failure
Unlimited capacity and free storage; always perfectly secure
Hard to copy and distribute; devices are always slower than paper records
Automatically compresses with no quality loss; never needs backups
Exam Practice: Compare optical and solid‑state storage devices. (6 marks)
Optical is cheap for distribution but lower capacity and slower; solid‑state is fast, reliable, and more expensive per GB
Optical has the highest speed and capacity; solid‑state is slow and fragile
Both use magnetic platters; both have similar durability and speed
Solid‑state is read by lasers; optical uses flash memory
Exam Practice: Discuss how data compression can affect image quality. (8 marks)
Lossy compression reduces file size by discarding some data, which can reduce quality; lossless keeps all data with no quality loss
All compression methods reduce file size with no impact on quality
Lossless compression removes colours to shrink images, making them blurry
Compression only affects video, not still images
Retrieval Activity 1 – Match-Up: Which interface type is described as uses icons and windows?
Graphical User Interface (GUI)
Command Line Interface (CLI)
Voice controlled
Biometric
Retrieval Activity 1 – Match-Up: Which interface type is described as text-based input?
Command Line Interface (CLI)
Graphical User Interface (GUI)
Touch
Menu driven
Retrieval Activity 1 – Match-Up: Which interface type is described as responds to spoken commands?
Voice controlled
Menu driven
Graphical User Interface (GUI)
Touch
Retrieval Activity 1 – Match-Up: Which interface type is described as offers list of options?
Menu driven
Voice controlled
Graphical User Interface (GUI)
Biometric
Retrieval Activity 1 – Match-Up: Which interface type is described as allows direct screen interaction?
Touch
Menu driven
Command Line Interface (CLI)
Voice controlled
Retrieval Activity 1 – Match-Up: Which interface type is described as uses physical characteristics for access?
Biometric
Graphical User Interface (GUI)
Touch
Command Line Interface (CLI)
Retrieval Activity 2 – Short Quiz: What is the purpose of an ISP?
Provides internet access to users
Stores and delivers web content
Helps find websites
Directs data between networks
Retrieval Activity 2 – Short Quiz: Select all connection methods suitable for mobile devices.
Wi‑Fi (802.11)
Bluetooth
Mobile Data (4G/5G)
Fibre optic
Retrieval Activity 2 – Short Quiz: What does spooling mean in an operating system?
Managing printer queues so tasks run in order
Compressing files to save space
Updating hardware drivers automatically
Encrypting data for secure storage
Retrieval Activity 2 – Short Quiz: Which option shows one advantage and one disadvantage of using Wi‑Fi?
Convenient, no cables; range/interference issues
Requires cables; very reliable over long distances
Hands‑free operation; needs special sensors
Extremely fast and reliable; high latency
Retrieval Activity 2 – Short Quiz: Which software type is designed for a specific business or client?
Bespoke software
Off‑the‑shelf software
Utility software
System software
Exam Practice: Which is a function of an operating system? (2 marks)
Manages hardware resources
Provides internet access as a service provider
Acts as a web search engine
Converts light signals in fibre optic cables
Exam Practice: Select the advantages of using a touch interface. (4 marks)
Fast interaction
Intuitive to use
Suitable for portable devices
Requires desk space
Leaves screen smudges
Exam Practice: Which statement correctly compares broadband and mobile data connections? (6 marks)
Broadband is high‑speed wired; mobile data uses cellular networks and can have variable speed
Broadband is wireless with range issues; mobile data is always wired and fixed speed
Both broadband and mobile data rely on orbiting satellites for connectivity
Broadband and mobile data offer identical reliability and speed in all locations
Exam Practice: Which statement best explains the importance of security and file management in an operating system? (8 marks)
They protect data and organize storage, enabling access control, backups, and efficient retrieval
They primarily speed up graphics rendering for games
They eliminate the need for application software
They ensure the internet connects without interference
Retrieval Activity 2 – True or False and Reflection. Parallel changeover is the cheapest option.
True
False
Retrieval Activity 2 – True or False and Reflection. Remote working can help employees balance work and personal life.
True
False
Retrieval Activity 2 – True or False and Reflection. EDI allows companies to exchange data automatically.
True
False
Retrieval Activity 2 – True or False and Reflection. Social media platforms only earn money from subscription fees.
True
False
Reflection Prompt. Choose the option that best describes one way digital technology has affected how you work, learn, or communicate.
Using shared online documents to collaborate in real time on group tasks
Avoiding all online tools to keep study habits unchanged
Printing every draft to collect feedback instead of using comments
Relying only on face‑to‑face meetings and never using messaging apps
Exam Practice. Identify one benefit of using digital systems in an organisation. (1 mark)
Reduced paperwork and storage costs
Increased manual data entry
Slower communication across teams
Higher error rates in records
Exam Practice. Describe two advantages of cloud‑based collaboration. Select all that apply. (4 marks)
Team members can edit documents together in real time
People can access shared files from anywhere with internet
All staff must be on the same local network to work together
Collaboration is limited to office hours only
Projects cannot be updated once shared
Exam Practice. Which statement best compares the pilot and big bang methods of system implementation? (6 marks)
Pilot is low risk but slower to roll out, while Big Bang is fast but high risk if the new system fails
Pilot switches off the old system immediately, while Big Bang runs both systems together
Pilot is the fastest way to change over organisation‑wide, while Big Bang is the most gradual
Pilot and Big Bang both require running old and new systems at the same time for months
Exam Practice. How have social media and online marketplaces affected consumers and businesses? Select all that apply. (10 marks)
They enable more direct communication and customer feedback
They increase competition among sellers
They only benefit businesses and never consumers
They reduce the need for data‑driven advertising
They support new revenue models such as targeted ads and influencer marketing
Retrieval Activity 1 – People Match-Up: Match each innovator to their key contribution. Which contribution correctly matches Ada Lovelace?
Invented the World Wide Web
Created the first computer algorithm for the Analytical Engine
Popularised graphical user interfaces and smartphones
Created the Java programming language
Retrieval Activity 1 – People Match-Up: Match each innovator to their key contribution. Which contribution correctly matches Alan Turing?
Concept of the Universal Machine and the Turing Test
Invented the first compiler for machine code
Created the Java programming language
Invented the World Wide Web
Retrieval Activity 1 – People Match-Up: Match each innovator to their key contribution. Which contribution correctly matches Grace Hopper?
Popularised consumer technology with iPod, iPhone, and iPad
Created the Java programming language
Invented the first compiler and influenced COBOL
Developed the World Wide Web and HTML
Retrieval Activity 1 – People Match-Up: Match each innovator to their key contribution. Which contribution correctly matches James Gosling?
Created the Java programming language
Concept of the Universal Machine
First computer algorithm
Invented the World Wide Web
Retrieval Activity 1 – People Match-Up: Match each innovator to their key contribution. Which contribution correctly matches Steve Jobs?
Invented the World Wide Web
Popularised graphical user interfaces on the Macintosh and revolutionised consumer devices
Concept of the Universal Machine
Created HTML
Retrieval Activity 1 – People Match-Up: Match each innovator to their key contribution. Which contribution correctly matches Sir Tim Berners-Lee?
Created the Java programming language
Developed the Turing Test
Invented the World Wide Web and created the first web browser and HTML
Invented the first compiler
Extension Task: Add one modern example of technology that links to each pioneer’s work. Which modern example best links to James Gosling’s contribution?
Android app development using Java
Voice assistants using the Turing Test
Desktop publishing with GUI on early Macs
Spreadsheets compiled to machine code
Extension Task: Add one modern example of technology that links to each pioneer’s work. Which modern example best links to Sir Tim Berners-Lee’s contribution?
Secure shell scripting
Interactive web pages connected through links
Bluetooth device pairing
Virtual reality headsets for gaming
Extension Task: Add one modern example of technology that links to each pioneer’s work. Which modern example best links to Steve Jobs’s contribution?
Touchscreen smartphones with intuitive GUI design
Mainframe batch processing
Neural networks for image recognition
Relational database indexing
Extension Task: Add one modern example of technology that links to each pioneer’s work. Which modern example best links to Grace Hopper’s contribution?
High-level business software compiled from COBOL-like languages
Peer-to-peer file sharing on the web
Biometric face unlock on phones
Packet switching in networks
Extension Task: Add one modern example of technology that links to each pioneer’s work. Which modern example best links to Alan Turing’s contribution?
Testing AI chatbots with criteria for machine intelligence
Designing GUIs for consumer devices
Streaming video over the web
Compiling high-level code into assembly
Extension Task: Add one modern example of technology that links to each pioneer’s work. Which modern example best links to Ada Lovelace’s contribution?
Algorithmic music generation using programmed instructions
Cloud-native microservices
Solid-state drive controllers
Quantum key distribution
Retrieval Activity 2 – Timeline: Which pioneer comes earliest in chronological order based on the dates provided?
Grace Hopper
Ada Lovelace
Alan Turing
Steve Jobs
Retrieval Activity 2 – Timeline: Select all pioneers who were born in 1955.
James Gosling
Steve Jobs
Sir Tim Berners-Lee
Grace Hopper
Retrieval Activity 2 – Creative Task: Choose the most appropriate one-sentence “tech headline” for Sir Tim Berners-Lee’s most important achievement.
Engineer debuts universal machine concept for modern computing
Computer scientist launches Java language for device‑agnostic apps
Innovator connects the world by creating the World Wide Web and HTML
Admiral builds first compiler to translate human‑readable code
Exam Practice: Identify one contribution made by Alan Turing to computing.
Pioneered the World Wide Web and HTML
Invented the first compiler
Developed the Universal Machine concept and work leading to the Turing Test
Created the Java programming language
Exam Practice: Explain how Tim Berners-Lee’s invention of the WWW changed global communication. Which statement best captures the impact?
It replaced operating systems with web browsers
It enabled linked web pages and a standard way to view and share information worldwide
It eliminated the need for programming languages
It standardised smartphone hardware
Exam Practice: Describe the importance of Grace Hopper’s development of compilers. Which statement is most accurate?
Compilers translate human‑readable code into machine language, enabling high‑level programming and languages like COBOL
Compilers are graphical tools for designing user interfaces
Compilers are tests that measure machine intelligence
Compilers are protocols for linking web pages
Exam Practice: Discuss how innovations from early pioneers continue to affect modern digital technologies. Which example best illustrates this ongoing influence?
The World Wide Web’s standards still enable modern websites and services
Mechanical calculators replaced all software
Programming shifted entirely to handwritten machine code
Graphical interfaces are no longer used on consumer devices
Match the term to its correct definition: Analogue.
Continuous data like sound or light waves
Data represented by binary values
Measuring the signal at regular intervals
Converting sampled values into binary numbers
Number of bits used per sample
Match the term to its correct definition: Digital.
Data represented by binary values
Continuous data like sound or light waves
Converting sampled values into binary numbers
Number of bits used per sample
Match the term to its correct definition: Sampling.
Measuring the signal at regular intervals
Converting sampled values into binary numbers
Data represented by binary values
Number of bits used per sample
Match the term to its correct definition: Quantisation.
Converting sampled values into binary numbers
Measuring the signal at regular intervals
Number of bits used per sample
Continuous data like sound or light waves
Match the term to its correct definition: Bit depth.
Number of bits used per sample
Measuring the signal at regular intervals
Converting sampled values into binary numbers
Reducing file size for storage or transmission
Match the term to its correct definition: Compression.
Reducing file size for storage or transmission
Number of bits used per sample
Continuous data like sound or light waves
Data represented by binary values
Analogue-to-Digital Conversion (ADC) is best described as which process?
Converting analogue signals into binary data
Measuring the signal amplitude at random intervals
Compressing audio files to reduce size
Changing binary data back to analogue signals
In digital audio, the sample rate refers to which quantity?
The number of measurements taken per second
The number of bits used to store each sample
The size of the compressed file
The maximum loudness of the signal
What is quantisation in the context of digital audio?
Converting measured sample values into binary numbers
Measuring the signal more frequently to improve quality
Removing frequencies outside human hearing
Converting binary data to analogue sound
Which statement about higher sample rate or bit depth is most accurate?
Improves quality but increases file size
Reduces file size without affecting quality
Has no effect on quality or file size
Always decreases quality while increasing file size
Which type of compression keeps full quality but achieves smaller reduction in file size for images?
Lossless compression
Lossy compression
Temporal compression
Hybrid compression
Explain how sound is represented digitally: Select all statements that correctly describe the process.
A microphone converts sound into an analogue electrical signal
The signal is sampled at regular intervals
Each measurement is quantised into binary form
Lower bit depth always improves quality
Storing data digitally has both advantages and disadvantages. Which option gives one correct advantage and one correct disadvantage?
Easy to copy and transfer; risk of data loss or corruption
Difficult to back up; requires no power or hardware
Hard to share; always more secure than physical storage
Cheap to copy; never requires specialised software
Compare optical and solid-state storage: Which statements are correct? (Select all that apply.)
Optical storage is slower and cheaper with lower capacity
Solid-state storage is faster and more durable but usually higher cost
Optical storage uses lasers to read discs such as DVDs
Solid-state storage relies on moving parts for data access
How does data compression affect image quality? Choose the most accurate statement.
Lossy compression reduces file size by permanently removing some detail
Lossless compression reduces size by discarding quality
Compression has no effect on transfer speed
Lossy compression always keeps full quality
Interface match-up: GUI is best described as which type of interface?
Uses icons and windows
Text-based input
Responds to spoken commands
Allows direct screen interaction
Interface match-up: CLI is best described as which type of interface?
Text-based input
Uses icons and windows
Offers list of options
Uses physical traits for access
Interface match-up: Voice interface is best described by which statement?
Responds to spoken commands
Offers list of options
Uses physical traits for access
Allows direct screen interaction
Interface match-up: Menu interface is best described by which statement?
Offers list of options
Text-based input
Responds to spoken commands
Uses icons and windows
Interface match-up: Touch interface is best described by which statement?
Allows direct screen interaction
Uses physical traits for access
Uses icons and windows
Text-based input
Interface match-up: Biometric interface is best described by which statement?
Uses physical traits for access
Responds to spoken commands
Offers list of options
Uses icons and windows
Which of the following best describes an ISP?
A provider that supplies internet connection to customers
A device used to connect printers to a network
A security protocol for encrypting emails
An operating system for mobile phones
Select all wireless/mobile connection types listed in the quiz.
Mobile data
Wi‑Fi
Bluetooth
Ethernet
What is spooling in the context of printing?
Queuing print jobs so they are processed in order
Printing each job immediately as it is sent
Encrypting documents before printing
Sharing a printer over the internet
Which option correctly pairs a Wi‑Fi advantage and a Wi‑Fi disadvantage?
No cables and convenient; limited range or interference
Unlimited range; requires cables
Low power use; always secure
High speed in all conditions; complex to set up
What is bespoke software best described as?
Software designed for a specific organisation or purpose
Generic software sold to a mass market
Open‑source software anyone can edit
Firmware embedded in hardware
Which is a key function of an operating system?
Managing hardware and software resources such as memory and processor use
Designing user interfaces for websites
Converting analogue signals to digital
Providing internet services to customers
Select two advantages of using a touch interface.
Easy and intuitive to use
Fast to input commands
Requires a mouse and keyboard to operate
Commonly used on tablets and phones for portability
Compare broadband and mobile data connections: Which statements are correct? (Select all that apply.)
Broadband is stable and fast with unlimited data but needs a fixed line
Mobile data is portable and flexible but often slower
Mobile data is subject to signal issues
Broadband requires no physical infrastructure at all
Why are security and file management important in an operating system? (Select all that apply.)
They protect against unauthorised access and malware
They manage file storage, naming and permissions
They prevent data loss and corruption
They are optional extras with no effect on reliability
Implementation method match-up: Pilot changeover is best described by which statement?
Trial in a small area first
Old and new systems run together
Switch to the new system immediately
Delay implementation until costs fall
Implementation method match-up: Parallel changeover is best described by which statement?
Old and new systems run together
Switch to the new system immediately
Trial in a small area first
Replace the old system only if tests fail
Implementation method match-up: Big Bang changeover is best described by which statement?
Switch to the new system immediately
Old and new systems run together
Trial in a small area first
Run a pilot test for several months
Which changeover method is the safest for a hospital?
Pilot
Big Bang
Direct
Parallel
Parallel changeover is the cheapest option.
True
False
Remote working can help employees balance work and personal life.
True
False
EDI allows companies to exchange data automatically.
True
False
Social media platforms only earn money from subscription fees.
True
False
Which is a benefit of using digital systems in an organisation?
Faster processing or automation leading to improved accuracy
Increased manual data entry steps
Eliminating the need for backups
Guaranteed lower hardware costs in all cases
Select two advantages of cloud‑based collaboration.
Access anywhere with real‑time multi‑user editing
Saves local storage by hosting files online
Requires all users to work on the same device
Prevents any need for internet access
Compare pilot and big bang implementation: Which statements are correct? (Select all that apply.)
Pilot is slower and safer, easier to fix issues
Big bang is fast and cheaper short‑term but risky if failure occurs
Pilot changes everything at once across the whole organisation
Big bang minimises risk by testing in a small area first
How do social media and online marketplaces affect consumers and businesses? (Select all that apply.)
Consumers get more choice, convenience and instant feedback
Businesses gain wider reach and targeted marketing through data analytics
Risks include fake news, privacy concerns and competition
There is no impact on businesses because online platforms replace them
