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Exam DEA-1TT5 topic 1 question 73 discussion

Actual exam question from Dell's DEA-1TT5
Question #: 73
Topic #: 1
[All DEA-1TT5 Questions]

A Fibre Channel switch has eight ports and all ports must be operational from 8 AM to 8 PM, Monday through Friday. However, a failure of Port 7 occurs in the week as follows:


Monday = 11 AM to 12 PM -

Wednesday = 4 PM to 9 PM -

Thursday = 4 AM to 9 AM -

Friday = 2 PM to 6 PM -

Saturday = 9 AM to 1 PM -

What is the availability of Port 7 in that week?

  • A. 75%
  • B. 80%
  • C. 83.3%
  • D. 68.3%
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by WazBlack at Feb. 4, 2023, 8:47 a.m.

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WazBlack
Highly Voted 2 years, 6 months ago
Selected Answer: C
C. 83.3% Total Operation: 12*5= 60 Downtime: 1 + 4 + 1 + 4 = 10 Uptime = 60 - 10 = 50 Availability = Uptime / (Uptime + Downtime) = 50 /(50+10) = 0.833 * 100 = 83.3%
upvoted 6 times
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mo7amed_3id
Most Recent 1 year ago
Selected Answer: C
C is a correct answer because all ports must be operational from 8 AM to 8 PM, Monday through Friday, and the last point of failure at Saturday that not enrolled at our system Uptime, and any hour before 8 AM and before 8 PM doesn't be enrolled at our system Uptime. Total Time = 5 * 12 = 60 The Down Time = 10 hours A = ((60 - 10)/60)*100 = 83.3%
upvoted 1 times
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Aynanalkady
1 year, 6 months ago
Selected Answer: A
Time =12*5=60 Downtime=1+5+5+4=15 (removed Saturday) Uptime=60-15=45 Availability=(45/(45+15))*100=75%
upvoted 1 times
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Darky34
1 year, 10 months ago
Selected Answer: A
Time =12*5=60 Downtime=1+5+5+4=15 (removed saturday) Uptime=60-15=45 Availability=(45/(45+15))*100=75%
upvoted 1 times
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Darky34
1 year, 10 months ago
Time =12*5=60 Downtime=1+5+5+4+4=19 Uptime=60-19=41 Availability=(41/(41+19))*100=68.3%
upvoted 1 times
Darky34
1 year, 10 months ago
Erratum : Time =12*5=60 Downtime=1+5+5+4=15 (removed saturday) Uptime=60-15=45 Availability=(45/(45+15))*100=75%
upvoted 1 times
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Naz75
2 years, 1 month ago
Selected Answer: A
Answer is A 1+5+5+4=15 (Exclude Saturday) total operating hours is 60 45/60=75 %
upvoted 1 times
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Axterix2612
2 years, 3 months ago
Selected Answer: C
C is correct
upvoted 2 times
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Rv2190
2 years, 5 months ago
Selected Answer: A
Downtime is 15hrs, Uptime=45, so 75% is the correct answer
upvoted 3 times
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C (25%)
B (20%)
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