AQA A-Level Computer Science 4.6 Fundamentals of computer systems overview quiz quiz

A web browser

The operating system

A device driver

A compiler

Editing and formatting word-processor documents

Memory management and process scheduling

Browsing the web and viewing web pages

Drawing and rendering the graphics for a video game

$1$

It depends on the previous output

$0$

Undefined

Only when both of the inputs are equal to 1

Only when both of the inputs are equal to 0

Always, regardless of the inputs

When the two inputs are different

$\overline{A} \cdot \overline{B}$

$\overline{A} + \overline{B}$

$A \cdot B + \overline{A} \cdot \overline{B}$

$A \cdot \overline{B} + \overline{A} \cdot B$

They are completely identical to each other and the two terms mean exactly the same thing

Machine code is binary; assembly uses mnemonics that translate to machine code

Assembly is a high-level language much like Python or Java

Machine code is fully portable between different types of processor

Imperative

Object-oriented

Declarative

Procedural

It reports any errors one statement at a time as the program is running line by line

It runs each individual statement noticeably more slowly than an interpreter

It is far better suited to quick line-by-line interactive debugging

It produces a fast standalone executable that does not need the source code to run

The source is broken into tokens and white space and comments are removed

The grammar of the program is checked and a full parse tree is then built

The final machine code is generated from the tree

The generated code is optimised to run faster

To check the grammar of the program against the language rules and then build a full parse tree

To improve the generated code to run faster or use less memory without changing what it does

To break the source code up into individual tokens

To remove all of the comments and white space

It runs directly on any processor without any further translation being needed at all

It is always faster to execute than fully compiled native machine code

It is platform-independent and run by a virtual machine, giving portability

It completely removes the need for any operating system on the machine