In which of the following distribution is the standard deviation equal to the mean?
Response:

• A.Binomial.
• B.Negative binomial.
• C.Exponential.
• D.Poisson.

Comment: *

Name: *

Email: *

Verification: *

For equipment consisting of three components connected in series whose respective reliabilities are
0.95, 0.94, 0.96, which could be used to calculate total probability?
Response:

• A.Addition law.
• B.Bayes Theorem.
• C.Product rule.
• D.Exponential failure law.

Comment: *

Name: *

Email: *

Verification: *

Which of the following CANNOT be classified as a computer output device?
Response:

• A.The keyboard.
• B.Printer.
• C.Disc drive unit.
• D.Magnetic tape unit.

Comment: *

Name: *

Email: *

Verification: *

A system is turned off every 30 days for 5 minutes for on line maintenance. If the probability of system failure due to hardware failure is negligible, what is the system's unavailability?
Response:

• A.0.999
• B.1.157 × 10 -4
• C.3.472 × 10 -4
• D.0.0333

Comment: *

Name: *

Email: *

Verification: *

A data collection, analysis, and reporting system should:
I. Permit detailed failure and failure rate analysis for varying environments, time periods, storage conditions, etc.
II. Provide distinction between items that failed and item that were wrongly removed.
III. Report data on successes as well as failures.
Response:

• A.I and III only
• B.I, II and III
• C.I only
• D.II and III only

Comment: *

Name: *

Email: *

Verification: *