Application Software is the type of software which runs as per user request. It runs on the platform which is provide by system software.

System Software is the type of software which is the interface between application software and system.

The Software Development Life Cycle (SDLC) refers to a methodology with clearly defined processes for creating high-quality software.

SDLC methodology focuses on the following phases of software development:

1. Requirement analysis
2. Planning
3. Software design such as architectural design
4. Software development
5. Testing
6. Deployment

Waterfall Model
V-Shaped Model
Iterative Model
Spiral Model
Big Bang Model
Agile Model

Waterfall is the oldest and most straightforward of the structured SDLC methodologies

Agile model quickly delivers a working product and is considered a very realistic development approach. The model produces ongoing releases, each with small, incremental changes from the previous release. At each iteration, the product is tested.

This model emphasizes interaction, as the customers, developers and testers work together throughout the project. But since this model depends heavily on customer interaction, the project can head the wrong way if the customer is not clear on the direction he or she wants to go.

Artifacts include:

1. Product backlog
2. Sprint backlog
3. Burndown charts
4. Product increment

This module provides the fundamental concepts of networking and the keywords related to inter connected computers. In addition, this module covers Internet concepts and all the keywords related to the Internet. It expounds on why essential knowledge and discipline is required for all phases of the development life cycle.