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Exam 1Y0-403 topic 1 question 30 discussion

Actual exam question from Citrix's 1Y0-403

Question #: 30
Topic #: 1

Scenario: A Citrix Architect is designing a new Citrix Virtual Apps and Desktops environment.
The table in the exhibit lists details about the requirements of the current user groups and their Virtual Delivery Agent (VDA) machine workloads.
Click the Exhibit button to view the table.

The architect should scale the hardware used to host the virtual machines (VMs) for User Group 1 to __________ cores. (Choose the correct option to complete the sentence.)

A. 32
B. 64
C. 96
D. 24
E. 16

Show Suggested Answer

Suggested Answer: E 🗳️

by elun at Sept. 11, 2020, 12:41 p.m.

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jdstroy

Highly Voted 1 year ago

Selected Answer: E

Overcommit ratio 8:1: 8 vCPU sharing one core. Nothing more - so no magic number calc. Use 2*40/8=10 => 16 is closest!

upvoted 5 times

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certhunterfembot

Most Recent 2 years ago

Regarding the comments calling for 24 cores: Why would we need MORE cores in the host if we are overcommitting? That doesn't make sense. The point of overcommitting is to get a greater user/desktop density per host. 16 cores gets us there. https://docs.citrix.com/en-us/tech-zone/design/design-decisions/single-server-scalability.html#scalability-factors

upvoted 3 times

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kirshad

2 years, 3 months ago

2vCpu x 40=80vcpu /5 (magic multipliers) =16 + overcommit. So answer D would be correct.

upvoted 2 times

jdstroy

1 year ago

No, that's not the way overcommitting works. Overcommit means in this case 8 vCPU sharing one core. Nothing more so no magic number calc. Use 2*40/8=10 => 16 is closest!

upvoted 2 times

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Bobo11

2 years, 3 months ago

Too me it is like this: 40Vm's X 2 Cpu's = 80vCPU's per host / 5 (Magic Multiplier for desktops) = 16 ; so answer E is correct.

upvoted 2 times

kepler

2 years ago

D is correct. You must factor in overcommit as well. @kirshad calc is correct.

upvoted 2 times

certhunterfembot

2 years ago

In what way are you factoring overcommit? What is the formula you are using?

upvoted 1 times

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jpgalan

2 years, 4 months ago

I think that the correct is E. 2vcpus*40mvs=80vcpus/5(Magic Multipliers)=16 physical cores. https://docs.citrix.com/en-us/tech-zone/design/design-decisions/single-server-scalability.html#the-magic-multipliers

upvoted 3 times

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elun

2 years, 5 months ago

what is the answer if the cpu overcommit is 1.5:1(user group2)

upvoted 2 times

Quietman

1 year, 6 months ago

For the User Group 2: vCPU = 6 x 16 / 1.5 = 64

upvoted 3 times

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