Exam D-ISM-FN-23 Topic 1 Question 135 Discussion

Actual exam question for EMC's D-ISM-FN-23 exam
Question #: 135
Topic #: 1
An Ethernet switch has eight ports and all ports must be operational for 24 hours; from Monday through Friday. However, a failure of Port 5 occurs as follows:
Tuesday = 6 AM to 7 AM Thursday = 5 PM to 9 PM Friday = 8 AM to 9 AM
What is the MTBF of Port 5?

Suggested Answer: C Vote an answer

* Total Operational Hours (Monday to Friday): 24 hours/day * 5 days = 120 hours
* Failure Times:
* Tuesday: 1 hour (6 AM to 7 AM)
* Thursday: 4 hours (5 PM to 9 PM)
* Friday: 1 hour (8 AM to 9 AM)
* Total Failure Hours: 1 + 4 + 1 = 6 hours
* Mean Time Between Failures (MTBF)
:MTBF=Total Operational HoursNumber of Failures=1203=40 hoursMTBF=Number of FailuresTotal Ope References: Dell ISM V5 Course, Module on Availability and Performance Management.

by Eudora at Jun 04, 2025, 11:45 AM

Limited Time Offer

15%

Off

Get Premium D-ISM-FN-23 Questions as Interactive Self Test Engine or PDF

Comments

Chosen Answer:
This is a voting comment (?) , you can switch to a simple comment.
Switch to a voting comment New
Nick name: Submit Cancel
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.
0
0
0
10