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Google Professional Cloud Network Engineer Exam - Topic 5 Question 62 Discussion

You are configuring a new HTTP application that will be exposed externally behind both IPv4 and IPv6 virtual IP addresses, using ports 80, 8080, and 443. You will have backends in two regions: us-west1 and us-east1. You want to serve the content with the lowest-possible latency while ensuring high availability and autoscaling, and create native content-based rules using the HTTP hostname and request path. The IP addresses of the clients that connect to the load balancer need to be visible to the backends. Which configuration should you use?
D) Use External HTTP(S) Load Balancing with URL Maps and an X-Forwarded-For header
A) Use Network Load Balancing
B) Use TCP Proxy Load Balancing with PROXY protocol enabled
C) Use External HTTP(S) Load Balancing with URL Maps and custom headers

Google Professional Cloud Network Engineer Exam - Topic 5 Question 62 Discussion

Actual exam question for Google's Professional Cloud Network Engineer exam
Question #: 62
Topic #: 5
[All Professional Cloud Network Engineer Questions]

You are configuring a new HTTP application that will be exposed externally behind both IPv4 and IPv6 virtual IP addresses, using ports 80, 8080, and 443. You will have backends in two regions: us-west1 and us-east1. You want to serve the content with the lowest-possible latency while ensuring high availability and autoscaling, and create native content-based rules using the HTTP hostname and request path. The IP addresses of the clients that connect to the load balancer need to be visible to the backends. Which configuration should you use?

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Suggested Answer: D

by Renea at Dec 28, 2022, 01:04 AM

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Yvette
10 months ago
Just a heads up, A won't work for this scenario.
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Willis
10 months ago
I’m leaning towards D, but I’m surprised it’s not more popular.
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Sherly
10 months ago
Wait, why not C? It seems like a solid option too.
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Juan
11 months ago
Definitely agree with D, it handles client IPs well!
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Theron
11 months ago
I think option D is the best choice for this setup.
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Ronnie
11 months ago
I vaguely recall something about TCP Proxy Load Balancing, but it seems more suited for TCP traffic rather than HTTP. I think that rules out option B.
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Caitlin
11 months ago
I practiced a similar question where we had to consider latency and high availability. I feel like option C could work too, but I'm leaning towards D for the client IP visibility.
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Rozella
11 months ago
I'm not entirely sure, but I think the X-Forwarded-For header is important for preserving client IPs. That might point towards option D.
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Justine
11 months ago
I remember that for HTTP applications, External HTTP(S) Load Balancing is usually the go-to option, especially with URL Maps.
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Rima
11 months ago
Ah, this is a tricky one. I'm leaning towards B - Create an Initial set of value streams that map one-to-one to existing capabilities. That seems like a logical way to start building out the value streams.
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Marge
11 months ago
Hmm, I'm not too familiar with the BIG-IP device commands. I'll need to double-check the syntax for the tcpdump command to make sure I get it right.
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Ollie
11 months ago
I'm not entirely sure, but could it be A? I vaguely recall it was related to some edge services.
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Albina
11 months ago
Okay, I think I've got this one. The message is likely just a toast notification letting the user know that the file has been saved to external storage. Option D seems like the most reasonable answer here.
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Eleonore
11 months ago
This seems straightforward - I'd go with option B to place the new server in the same Availability Set as the database and other app servers. That should give us the highest availability.
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