Question 1
Which is a lossless compression trade-off?
Original data can be perfectly reconstructed, but the file is larger than an equivalent lossy file Some data is permanently discarded to save space It only works on video files It always produces smaller files than lossy compression
Check answer Question 2
Why would you choose lossy compression for a streamed music file?
Some quality loss is acceptable in exchange for a much smaller file size Lossy compression never loses any quality It's required by law for all audio It makes the file larger but higher quality
Check answer Question 3
What best distinguishes a static website from a dynamic one?
A static site shows the same content to everyone; a dynamic site changes based on user input or database data A static site is always faster to build A dynamic site never uses a database There is no real distinction
Check answer Question 4
What is TCP best used for, compared to UDP?
Reliable, ordered delivery where accuracy matters, e.g. file downloads Live video calls where speed matters more than perfect delivery Situations where some data loss is always acceptable Only for email transmission
Check answer Question 5
What does FTP do?
Transfers files between a client and a server Automatically assigns IP addresses Encrypts web traffic Translates domain names to IP addresses
Check answer Question 6
What is Web 2.0 known for, compared to Web 1.0?
User-generated content and interactivity (e.g. comments, likes, social media) Static, read-only pages with no interactivity Fully decentralised, blockchain-based content only No use of a web browser at all
Check answer Question 7
What design factor must be specifically considered for mobile technology, unlike desktop?
Smaller screen size requiring simplified layouts Unlimited processing power No need to consider storage space Unlimited bandwidth
Check answer Question 8
What is a truncating error?
Cutting off digits instead of rounding a number A network cable being physically damaged A user typing the wrong data A firewall blocking legitimate traffic
Check answer Question 9
What is an 'undetected logical error' as a source of error?
The program runs without crashing but produces incorrect results because the logic is flawed The program fails to compile A hardware component overheats A user enters data too slowly
Check answer Question 10
What is the purpose of an audit trail?
Logs of system activity used to detect and investigate suspicious behaviour after the fact Encrypting stored data Assigning IP addresses automatically Compressing large files
Check answer Question 11
Which remote content-delivery method requires continuous, sufficient bandwidth to avoid buffering?
Streaming Downloading FTP transfer Archiving
Check answer Question 12
Reverse image lookup is most useful for:
Verifying whether an image is genuine/original, or finding where else it appears online Speeding up your Internet connection Automatically compressing images Encrypting an image file
Check answer Question 13
A hybrid mobile app is best described as:
Combining web technologies wrapped in a native app shell for cross-platform convenience An app built purely for one platform with no shared code A website with no app-like features at all An app that only works offline
Check answer Question 14
What advantage does fibre have over ADSL?
Much higher bandwidth, better suited to streaming, gaming and large uploads It is always cheaper to install It uses existing telephone lines exclusively It requires no physical cabling at all
Check answer Question 15
What is a VLAN tag used for?
Identifying which Virtual LAN traffic belongs to, letting one physical network be logically divided Encrypting a whole network's traffic Assigning IP addresses automatically Detecting transmission errors via parity
Check answer Question 16 — Match the columns
Match each web-era term in Column A to its description in Column B.
Column A Column B 1. Web 1.0 Select… A. Static, read-only pages with little interactivity B. A more intelligent, semantic and decentralised web C. The interactive, user-generated 'read-write' web D. An even more integrated, AI-driven, ubiquitous web 2. Web 2.0 Select… A. Static, read-only pages with little interactivity B. A more intelligent, semantic and decentralised web C. The interactive, user-generated 'read-write' web D. An even more integrated, AI-driven, ubiquitous web 3. Web 3.0 Select… A. Static, read-only pages with little interactivity B. A more intelligent, semantic and decentralised web C. The interactive, user-generated 'read-write' web D. An even more integrated, AI-driven, ubiquitous web 4. Web 4.0 Select… A. Static, read-only pages with little interactivity B. A more intelligent, semantic and decentralised web C. The interactive, user-generated 'read-write' web D. An even more integrated, AI-driven, ubiquitous web
Check answer Question 17 — Match the columns
Match each source-of-error category in Column A to an example in Column B.
Column A Column B 1. Human error Select… A. An undetected logical flaw producing wrong results without crashing B. A damaged or faulty cable disrupting the signal C. GIGO — incorrect input leads to incorrect output D. A rounding or truncating inaccuracy 2. Arithmetic error Select… A. An undetected logical flaw producing wrong results without crashing B. A damaged or faulty cable disrupting the signal C. GIGO — incorrect input leads to incorrect output D. A rounding or truncating inaccuracy 3. Data transmission error Select… A. An undetected logical flaw producing wrong results without crashing B. A damaged or faulty cable disrupting the signal C. GIGO — incorrect input leads to incorrect output D. A rounding or truncating inaccuracy 4. Programming error Select… A. An undetected logical flaw producing wrong results without crashing B. A damaged or faulty cable disrupting the signal C. GIGO — incorrect input leads to incorrect output D. A rounding or truncating inaccuracy
Check answer Question 18
Which best distinguishes a bridge from a router?
A bridge connects/filters traffic between two segments of the SAME network; a router connects DIFFERENT networks A bridge and a router are identical devices A bridge only works wirelessly A router cannot direct data at all
Check answer Question 19
Podcasts and vodcasts are best described as:
Episodic audio/video content, typically downloaded or streamed on demand Live-only broadcasts that cannot be replayed A type of network protocol A method of file compression
Check answer Question 20
What does VOIP stand for and do?
Voice Over IP — voice calls transmitted as data over the Internet A protocol for automatically assigning IP addresses A type of malware targeting phones A method of video compression
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