Q  Distinguish software faults and software failures?

Ans: In case of a failure a software doesn't do what the users expect, a fault is a programming bug that may or mayn't actually manifest as a failure. A fault can as well be described as an error in the correctness of the semantic of a computer program. A fault will turn into a failure if the exact computation conditions are met one of them being that the faulty portion of computer software executes on the CPU. A fault can as well turn into a failure when the software is ported to a different hardware platform or a different compiler or when the software gets extended.