RU ITEC411 Chapter 8

3. Some systems have failures so extreme that they are ________
5. _______ are for the needs of the client require an understanding of how they will use the system
8. _______ professionals study failures to understand its impacts
11. There is usually more than one factor that causes ________
12. A problem for individuals caused by failures and errors in computer systems is inaccurate _____ in databases
16. Something that was missed in the design of the Therac-25 were _____ in the system
17. One management problem is the failure to keep information in _______ up to date
18. Real world _____ with real world users increases reliability in computer systems
19. Safety-critical _______ identify risks and protect against them
20. Most computer applications are _________

1. It is almost impossible to produce a program with no _______
2. Errors in computer systems cause problems for __________
4. Poor ________ can be a cause of system failures
6. Minor design systems are to be _______ in complex systems
7. A software design problem from the Therac-25 was re-used _______ from older systems
9. _________ is a professional technique to reduce errors and increase safety
10. On example of a real life system failure is the _______ IV
13. Inadequate ________ to potential safety risks may cause system failures
14. Something that might aid in errors in computer systems is a _______ incentive to do a better job
15. A cause of system failures is the lack of clear ______