The V-Model contains several verification phases, where the requirements are clearly identified, the program architecture is designed, and then the design is implemented with coding. The validation phases in this model contain the tests designed for each verification phase. The different tests used in this model are: acceptance tests, system tests, integration tests and unit tests. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay The first step included in the verification part is the requirements analysis where the product requirements are understood from the customer's point of view. It is very important that this phase includes detailed communication with the customer to understand their expectations and precise needs. This is because, most of the time, the customer doesn't know exactly what they want. Acceptance test design planning is done in this phase as these requirements can be used as input for the first tests. Acceptance tests are used to show compatibility issues with other systems available to the user. The next phases of verification are the design phases, which include system design, architecture design, and module design. These phases occur after the requirements have been defined and include the design of the entire system. The system design includes the complete hardware and communications setup needed for the product. A system test plan is developed based on the chosen project. System tests are used to verify the functionality of the entire system and the system's communication with external systems. Additionally, the product architecture is designed. Usually, more than one approach is chosen for design, however this depends on the financial and technical feasibility of the product. High-level design refers to the overall design of the entire system divided into modules, each with its own functions. Integration tests are performed to test the communication of internal modules in the system. On the other hand, low-level design is the detailed internal design of each of the system modules. The design must be compatible with the modules of the system architecture, but also with external systems. To reduce errors and failures in the design, unit tests can be designed at this stage based on the internal design of the modules. Unit testing refers to code-level testing and helps eliminate bugs at an early stage. Please note: this is just an example. Get a custom paper from our expert writers now. Get a Custom Essay After that, the actual coding of the application is developed and the programming language best suited to the system and requirements is chosen. The code is written to fit the requirements provided. the code is checked several times to find out how to optimize it to make it more efficient.