Beginner Computing quiz

More questions about Beginner Computing

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   What file format is made to show documents identically on any device?

   Answer: PDF

   Why: PDF began as Adobe co-founder John Warnock's 1991 Camelot project and became an open ISO standard in 2008.

2. 2 Medium

   What does the "P" stand for in the file format PDF?

   Answer: Portable

   Why: Adobe shipped it in June 1993 and kept control of it for fifteen years, handing it over as an open standard only in 2008.

3. 3 Hard

   What translates human-readable code into machine-executable instructions?

   Answer: compiler

   Why: Compiled programs usually run faster than interpreted ones, which execute source code without first compiling it to machine code.

4. 4 Easy

   What device converts digital computer signals into analog signals?

   Answer: Modem

   Why: The name modem comes from combining its primary functions: modulator and demodulator.

5. 5 Medium

   In Java, what value does an object field hold before anything is assigned to it?

   Answer: null

   Why: Java quietly fills unset object fields this way but sets number fields to 0 and booleans to false, while JavaScript uses a separate value called undefined.

6. 6 Hard

   What is the default port number used for HTTP web traffic?

   Answer: 80

   Why: IANA now lists port 80 under the IESG and RFC 9110; the Tim Berners-Lee entry for it survives only as a flagged duplicate.