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  1. Home
  2. Google Certification
  3. Professional-Cloud-Network-Engineer Exam
  4. Google.Professional-Cloud-Network-Engineer.v2024-06-24.q120 Dumps
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Question 16

You have a storage bucket that contains two objects. Cloud CDN is enabled on the bucket, and both objects have been successfully cached. Now you want to make sure that one of the two objects will not be cached anymore, and will always be served to the internet directly from the origin.
What should you do?

Correct Answer: A
Explanation/Reference: https://developers.google.com/web/ilt/pwa/caching-files-with-service-worker
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Question 17

You are designing an IP address scheme for new private Google Kubernetes Engine (GKE) clusters, Due to IP address exhaustion of the RFC 1918 address space in your enterprise, you plan to use privately used public IP space for the new dusters. You want to follow Google-recommended practices, What should you do after designing your IP scheme?

Correct Answer: D
The correct answer is D. Create privately used public IP primary and secondary subnet ranges for the clusters. Create a private GKE cluster with the following options selected: --disable-default-snat, --enable-ip-alias, and --enable-private-nodes.
This answer is based on the following facts:
Privately used public IP (PUPI) addresses are any public IP addresses not owned by Google that a customer can use privately on Google Cloud1. You can use PUPI addresses for GKE pods and services in private clusters to mitigate address exhaustion.
A private GKE cluster is a cluster that has no public IP addresses on the nodes2. You can use private clusters to isolate your workloads from the public internet and enhance security.
The --disable-default-snat option disables source network address translation (SNAT) for the cluster3. This option allows you to use PUPI addresses without conflicting with other public IP addresses on the internet.
The --enable-ip-alias option enables alias IP ranges for the cluster4. This option allows you to use separate subnet ranges for nodes, pods, and services, and to specify the size of those ranges.
The --enable-private-nodes option enables private nodes for the cluster5. This option ensures that the nodes have no public IP addresses and can only communicate with other Google Cloud resources in the same VPC network or peered networks.
The other options are not correct because:
Option A is not suitable. Creating RFC 1918 primary and secondary subnet IP ranges for the clusters does not solve the problem of address exhaustion. Re-using the secondary address range for pods across multiple private GKE clusters can cause IP conflicts and routing issues.
Option B is also not suitable. Creating RFC 1918 primary and secondary subnet IP ranges for the clusters does not solve the problem of address exhaustion. Re-using the secondary address range for services across multiple private GKE clusters can cause IP conflicts and routing issues.
Option C is not feasible. Creating privately used public IP primary and secondary subnet ranges for the clusters is a valid step, but creating a private GKE cluster with only --enable-ip-alias and --enable-private-nodes options is not enough. You also need to disable default SNAT to avoid IP conflicts with other public IP addresses on the internet.
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Question 18

You are trying to update firewall rules in a shared VPC for which you have been assigned only Network Admin permissions. You cannot modify the firewall rules. Your organization requires using the least privilege necessary.
Which level of permissions should you request?

Correct Answer: B
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Question 19

Your organization requires that metrics from all applications be retained for 5 years for future analysis in possible legal proceedings. Which approach should you use?

Correct Answer: C
B and D can be quickly ruled out because none of them is good solution for the requirements
"retained for 5 years"
Between A and C, the different is where to store, BigQuery or Cloud Storage. Since the main concern is extended storing period, C (Correct Answer) is better answer, and the "retained for 5 years for future analysis" further qualifies it, for example, using Coldline storage class.
With regards of BigQuery, while it is also a low-cost storage, but the main purpose is for analysis.
Also, logs in Cloud Storage is easy to transport to BigQuery whenever needed.
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Question 20

You created a VPC network named Retail in auto mode. You want to create a VPC network named Distribution and peer it with the Retail VPC.
How should you configure the Distribution VPC?

Correct Answer: B
Explanation/Reference: https://cloud.google.com/vpc/docs/using-vpc
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