Reliability and Test Game

If you promise five 9s of availability (99.999% uptime) and your MTBF is 5 weeks then your MTTR must be approximately X or better:

•  30 minutes

• 5 minutes

• 30 seconds

• 3 seconds

Randomly disconnecting networking cables in the server room is an example of what type of testing?

• Integration testing

• Non-functional testing

• Unit testing

• Never done

You should always complete functional testing before starting non-functional testing.

• True

• False

If your system goes down on average twice a year and it takes you on average 15 minutes to recover, you availability is?

• 3 9s (99.9% uptime)

• 4 9s (99.99% uptime)

• 5 9s (99.999% uptime)

• Doesn't matter because if you are down for 15 minutes you are out of business.

Testing the program without access to the source code is called

• Beta testing

• Black box testing

• Dry run testing

• Stub testing

The pseudo code function SUM() has 8 lines of code. If our test invokes it with SUM(3, 5), what is the line coverage?

• 0.375

• 0.5

• 0.75

• 1.0

For the following pseudo code function, how many tests would be required to achieve 100% line coverage?

• 3

• 4

• 5

• 6

For the following pseudo code function, how many tests would be required to achieve 100% decision coverage?

• 3

• 4

• 5

• 6

For the following pseudo code function, how many tests would be required to achieve 100% line coverage?

• 1

• 2

• 4

• 8

For the following pseudo code function, how many tests would be required to achieve 100% decision coverage?

• 1

• 4

• 5

• 6