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Actual exam question from Microsoft's 70-345
Question #: 1
Topic #: 1
[All 70-345 Questions]

You have three Hyper-V hosts that each have 20 processor cores and 64 GB of RAM. Nine virtual machines are deployed to the hosts as shown in the following table.

Host1 is located in New York, Host2 is located in Los Angeles, and Host3 is located in Denver. None of the virtual machines use dynamic memory.
You plan to deploy a two-node Exchange Server 2016 database availability group (DAG) by using the virtual machines. Each node will have 12 processor cores and 24 GB of memory.
You are evaluating whether you can use the existing servers for the deployment or whether you must purchase additional servers.
You need to recommend where to place the Exchange servers. The solution must minimize costs.
What is the best recommendation to achieve the goal? More than one answer choice may achieve the goal. Select the BEST answer.

  • A. One Exchange server on Host1 and one Exchange server on a new Hyper-V host.
  • B. One Exchange server on Host1 and one Exchange server on Host3.
  • C. Both Exchange servers on Host1.
  • D. One Exchange server on Host1 and one Exchange server on Host2.
  • E. One Exchange server on Host2 and one Exchange server on Host3.
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
First, look at the CPU requirements for Exchange 2016.
"Exchange supports a virtual processor-to-logical processor ratio no greater than 2:1, although we recommend a ratio of 1:1. For example, a dual processor system using quad core processors contains a total of 8 logical processors in the host system. On a system with this configuration, don't allocate more than a total of 16 virtual processors to all guest virtual machines combined."
Furthermore, the host operating system also needs 2 processors. source: https://technet.microsoft.com/en-us/library/jj619301(v=exchg.160).aspx

Host 1 uses 12 out of 20 cores -

Host 2 uses 20 out of 20 cores -

Host 3 uses 32 out of 20 cores -
You need 12 cores, so Host 3 lacks the resources.
This leaves hosts 1 and 2.
Now, let's look to the memory requirements:
""¦using dynamic memory or memory overcommit features for Exchange isn't supported." source: https://technet.microsoft.com/en-us/library/jj619301(v=exchg.160).aspx

Host 1 uses 20 out of 64 GB -

Host 2 uses 48 out of 64 GB -

Host 3 uses 44 out of 64 GB -
You need 24 GB for each VM.
Only host 1 has the resources for it.
It is not recommended to put both VM's on one host.
So, the answer should be: A.
by l1f3rl at March 6, 2020, 9:29 p.m.

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l1f3rl
Highly Voted 5 years, 2 months ago
Correct.
upvoted 5 times
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RakRocky
Most Recent 4 years, 5 months ago
A. One Exchange server on Host1 and one Exchange server on a new Hyper-V host.
upvoted 1 times
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Ambi_07
4 years, 7 months ago
One Exchange server on Host2 and one Exchange server on Host3.
upvoted 1 times
algerianphoenix
4 years, 6 months ago
All CPU Cores are consumed on Host 2 and Host 3, only Host 1 can barely host another VM for the first Exchange Server Node.
upvoted 1 times
...
...
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