Solution: Debugging is done in the development phase by the developer. In development phase developer fixes the bug (i.e) called debugging.

Solution: The statement is false. Testing is conducted by the testers in testing phase. Testing is a process of finding the defects from a user perspective(Black Box Testing).

Solution: Process of evaluating a system (after it is put in operation) to verify whether or not it is meeting its objectives is called as system evaluation.

Solution: Points considered for evaluating a system are:
-> Performance evaluation
-> Cost analysis
-> Time analysis
-> User satisfaction
-> Ease of modification
-> Failure rate.

Solution: Black box testing is conducted at the software interface. White box testing is predicated on close examination of procedural details.

Solution: The Process of incorporating changes in an existing system to enhance, update, or upgrade its features is called system maintenance. On an average, maintenance cost of a computerized system is two to four times more than the initial development cost.

Solution: Alpha testing is conducted at the developer’s site. It is conducted by a customer (end users) in developer’s presence before software delivery.

Solution: Beta testing is conducted at the customer’s site. Generally, developer is not present. Customer records all problems (defects) and reports it to developer.

Solution: The answer is software reliability. It is estimated using historical and development data.

Solution: Software availability marks the proper functioning of the software at a given point of time. Reliability, availability and safety are three important factors.