2.5.1 The benefits and drawbacks of using pre-written code

Question 1

Define:

Pre-written code

Answer 1

Code that already exists when developing new software either within your own organisation or from an external source

Question 2

State:

3 ways that code can be reused

Answer 2

• Using third party libraries
• Open-sourced frameworks
• Repurposing code that has been used/developed/written internally

Question 3

State:

2 benefits of using pre-written code

Answer 3

• Shorter development time - reduces time needed to develop a solution (python package index) because reduces time planning and writing code
• Improved end product - add greater functionality with pre-written code

Question 4

State:

3 drawbacks of using pre-written code

Answer 4

• Security risks - code could have security vulnerabilities if not tested properly
• Lack of control - if changes are made to codfe they may have an impact on program being developed because you do not own it
• Naming conventions - Conventions used within the code and names can be different to a programming language that software is being developed in

Question 5

Define:

Open Source

Answer 5

Software where the copyright holder grants users the right to use, edit and distribute the source code

Question 6

Define:

Injection Flaws

Answer 6

Allow attackers to relay malicious code through an application to another system

Question 7

Define:

Cross-site scripting (XSS)

Answer 7

Type of injection, where attackers inject client side scripts so that other users can view them and to bypass access controls; found on websites or web apps that accept end-user input