Completing the requirements analysis is the evolutionary step of the Software development life cycle (SDLC). Hence option 3
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What is the software development life cycle?</h3>
The SDLC is a method for evaluating and improving the development process. It enables a fine-grained study of each process phase. As a result, firms are able to maximize efficiency at each level.
SDLC aids in the achievement of these objectives by detecting inefficiencies and increased costs and resolving them so that everything runs smoothly.
Thus, Initial needs and architecture planning must be completed and are considered as an evolution in the SDLC model
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Public key and private key - In public key encryption, a pair of keys is used (public key and private key). The public key can be made available publicly, while the private key is only known by the owner. The public key is used to encrypt the message, while the private key is used to decrypt the message.
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An input device is something that gives information to the computer. On the other hand, an output device is something that gives you information.