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Exam 70-345 topic 4 question 9 discussion

Actual exam question from Microsoft's 70-345
Question #: 9
Topic #: 4
[All 70-345 Questions]

You need to recommend an NLB configuration that meets the availability requirements and the security requirements.
Which load balancing solution should you recommend?

  • A. Layer 7 load balancing with session affinity
  • B. Layer 4 load balancing without session affinity
  • C. Layer 4 load balancing with session affinity
  • D. Layer 7 load balancing without session affinity
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Suggested Answer: D 🗳️
References:
https://blogs.technet.microsoft.com/exchange/2015/10/08/load-balancing-in-exchange-2016/

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Harry83
4 years, 6 months ago
Basically & referring to preferred architecture it should be D : Layer 7 without session affinity. But referring to this sentence inside security requirements it think it can be answer A : Layer 7 WITH session affinity. "Whenever possible, client computers must be directed to the same Exchange server for log collection." The only way I know to "redirect" a client computer to the same Exchange Server for log collection (thinking about IIS logs) is to deploy session affinity (for example Client IP) to ensure that the same client IP / computer always go to the same "CAS" during the day (except if the server goes down of course).
upvoted 3 times
cj0nes
4 years, 5 months ago
I, also, took the sentence in the security requirements to mean that session affinity is needed. I believe the answer should be A.
upvoted 3 times
vladgo
4 years, 5 months ago
I agree with you but, ..."The HTTP protocol standard introduced with Exchange 2013 means that session affinity is no longer required in Exchange 2016 and Exchange 2019."
upvoted 1 times
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MCSA11
5 years, 2 months ago
D. Layer 7 load balancing without session affinity
upvoted 1 times
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l1f3rl
5 years, 3 months ago
Correct. https://docs.microsoft.com/en-us/exchange/architecture/client-access/load-balancing?view=exchserver-2019
upvoted 1 times
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