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Exam Professional Cloud Developer topic 1 question 312 discussion

Actual exam question from Google's Professional Cloud Developer
Question #: 312
Topic #: 1
[All Professional Cloud Developer Questions]

You work for an environmental agency in a large city. You are developing a new monitoring platform that will capture air quality readings from thousands of locations in the city. You want the air quality reading devices to send and receive their data payload to the newly created RESTful backend systems every minute by using a curl command. The backend systems are running in a single cloud region and are using Premium Tier networking. You need to connect the devices to the backend while minimizing the daily average latency, measured by using Time to First Byte (TTFB). How should you build this service?

  • A. 1. Run the air quality devices’ backends on Compute Engine VMs.
    2. Create a weighted round robin routing policy on Cloud DNS.
    3. Configure the air quality devices to connect by using this DNS.
  • B. 1. Run the air quality devices’ backends on Compute Engine VMs.
    2. Create a round robin routing policy on Cloud DNS for these Compute Engine VMs.
    3. Configure the air quality devices to connect by using this DNS.
  • C. 1. Run the air quality devices' backends in a managed instance group.
    2. Create an external passthrough Network Load Balancer to connect to the managed instance group.
    3. Configure a connection between the air quality devices and the Network Load Balancer.
  • D. 1 Run the air quality devices' backends in a managed instance group.
    2. Create an external Application Load Balancer, and connect it to the managed instance group.
    3. Configure a connection between the air quality devices and the Application Load Balancer.
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Suggested Answer: D 🗳️
by anshad666 at Oct. 12, 2024, 9:06 a.m.

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anshad666
1 month, 1 week ago
Selected Answer: D
Managed Instance Group: Using a managed instance group allows for automatic scaling based on demand, which is essential when dealing with a high volume of data coming from thousands of devices. External Application Load Balancer: This type of load balancer is designed to distribute incoming traffic across multiple instances in the managed instance group, helping to ensure low latency and high availability. The Application Load Balancer also supports HTTP/HTTPS traffic, which is ideal for RESTful APIs.
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