Exam Questions June 2015

Exam Questions June 2015

1. Number Types

   • Nibbles is the smallest
   • Then bits is the next smallest
   • Then bytes is the next biggest
   • Then the next largest is kilobyte

2. ASCII

   • Character F is represented in binary by 110 0110
     • Character G is represented in binary by 110 0111

3. Bitmap

   • Image which is in black and white which is displayed in 0's and 1's
     • 0's are black
       • 1's are white
   • Resolution can affect the quality of the picture
   • Picture quality can be affected by the file type, e.g jpeg due to compression of the file

4. Programming

   • Python is a programming language I am familiar with
   • Data Types
     • Boolean is True/False
       • Character is a single character
       • Real data
     • String is words joined together within a sentence
     • Integer is for positive or negative numbers
     • Data Structures
       • 2D Array

5. Algorithms

   • An algorithm is a set of instructions that will return an output
     • Algorithms 2 could be written better because once it has been matched it stops
       • Purpose of algorithm 2 is it checks for a specific value

6. Variables

   • variables can be labelled 'i' as its an index for the array
   • The variable 'matched'is to check a specific value
     • 'matched' is a boolean data type

7. Software Development Life Cycle

   • Waterfall Model/Waterfall
     • Stage 1 is Analysis
       • Stage 2 is Deisgn
         • Stage 3 Implementation
           • Stage 4 is Testing
   • V-Shaped Model
   • Spiral Model
   • Incremental Model
   • The basic model

8. Prototyping

   • Advantages
     • Full-scale testing will crop up any problems the code may have
     • More robust, will make the code more secure
     • Gives early insight on future development
   • Disadvantages
     • Costs time and money
       • Less time on the actual code itself