A computer virus is a malicious software program loaded onto a user's computer without the user's knowledge and performs malicious actions. It can self-replicate, inserting itself onto other programs or files, infecting them in the process.
Answer:
Receiving unexpected results from a program
Explanation:
Logic errors are due to the program not producing a desired result.
Answer: A. Usability testing
Explanation:
Usability testing would be the correct answer because if the user interface isn't "frendly" then people won't be able to use it properly. Or if you are refering to the word friendly as looking safe, then even more so would be usability testing. Because if people don't like the fonts and styles of the user interface, they might not use it at all.
Answer:
b
Explanation:
A computing grid can be thought of as a distributed system with non-interactive workloads that involve many files.