Back tracking, Performance modelling and visualisation

Question 1

Backtracking

Answer 1

problem solving technique implemented by using algorithms, usually recursively

Question 2

How does backtracking work?

Answer 2

methodically visits each path and builds a solution based on the paths found to be correct.
If a path is found to be invalid the algorithm will backtrack to the previous stage.

Question 3

Performance modelling

Answer 3

provides mathematical methods to test a variety of loads on different operating systems

Question 4

Benefits of performance modelling

Answer 4

Eliminates the need for true performance testing.

Cheaper

less time-consuming

safer method of testing applications.

Question 5

When/where would you use performance modelling?

Answer 5

Useful for safety-critical computer systems where its not safe to do a real trial run.

help companies judge the capabilities of a system and whether its safe to implement

Question 6

Visualisation

Answer 6

Data presented in a way that is easier for us to understand.

you use it to produce graphs, trees and charts.

Question 7

Why use visualisation?

Answer 7

Makes it possible to identify trends that were not otherwise obvious.

inform business desicions.