SLR 5/ Application Generation

Question 1

List some common types of Application Software

Answer 1

Word Processor
Spreadsheet Software
Database Management
Video Editing

Question 2

Name the 5 Utility Software’s

Answer 2

Antivirus
Disk defragmenter
Compression
File Manager
Backup

Question 3

Define Antivirus

Answer 3

Helps detect and remove malicious programs, often designed to harm a computer in some way.​

Question 4

Define Disk Defragmenter

Answer 4

Over time, files can become split, making file retrieval slower. This software consolidates file parts back together.

Question 5

Define Compression

Answer 5

Reduces the amount of space information takes up on a storage device.

Question 6

Define File Manager

Answer 6

Allows files and folders to be created, moved, copied, deleted and renamed.

Question 7

Define Backup

Answer 7

Provides a way to recover data if the original copy is lost, deleted or corrupted

Question 8

Define Open Source

Answer 8

Developed collaboratively, end user can change and improve source code, tends to be free to obtain and distribute

Question 9

Define Closed Source

Answer 9

Produced and owned by a company, source code not available to others, protected, paid license to use software

Question 10

State an advantage and disadvantage to Open Source

Answer 10

Advantage: Can share with others, source code available, free license, can be modified.
Disadvantage: Support must be paid for, finished quality can vary.​​

Question 11

State an advantage and disadvantage to Closed Source

Answer 11

Advantage: Support is normally free, developer tends to provide free updates for a set period, high-quality programs.
Disadvantage: Source code not available, software can’t be altered or shared with others.

Question 12

What are the 3 types of Translators

Answer 12

Assembler
Interpreter
Compiler

Question 13

Define Assembler

Answer 13

Translates a program written in assembly language.​

Takes mnemonics and turns them into machine code.​

Question 14

Define Interpreter

Answer 14

Takes one line of code at a time, translates it and then runs it.​

Can be useful for finding errors during coding and debugging

Question 15

Define Compiler

Answer 15

Takes source code and translates it all to build an executable machine-code program.​

The finished executable runs quicker than an interpreted program and requires no additional software.

Question 16

List the four stages of Compilation

Answer 16

Stage 1 - Lexical Analysis
Stage 2 - Syntax Analysis
Stage 3 - Code Generation
Stage 4 - Linking and Loading

Question 17

Describe Stage 1 - Lexical Analysis

Answer 17

Comments and whitespace removed. Converts code into Tokens

Question 18

Describe Stage 2 - Syntax Analysis

Answer 18

Tokens are checked against rules of the language. If they don’t, syntax error are reported. An abstract syntax tree is created

Question 19

Describe Stage 3 - Code generation

Answer 19

The syntax tree is converted into machine code. Optimization’s are carried out to make program more efficient in processing

Question 20

Describe Stage 4 - Linking and Loading

Answer 20

Library code is linked with object code by a linker to make one executable file. Loader code is also added so that programs and libraries are loaded by the OS