Courseiva
← PCA
Full test
Question 806 of 1,000
Ensure solution and operations reliability →mediumMultiple ChoiceObjective-mapped

Google PCA Ensure solution and operations reliability Practice Question

This PCA practice question tests your understanding of ensure solution and operations reliability. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

Exhibit

gcloud compute forwarding-rules describe my-https-rule --region=us-central1
...
IPAddress: 34.96.0.1
IPProtocol: TCP
portRange: 443-443
target: https://www.googleapis.com/compute/v1/projects/my-project/regions/us-central1/targetPools/my-target-pool
...
gcloud compute target-pools describe my-target-pool --region=us-central1
...
healthCheck: https://www.googleapis.com/compute/v1/projects/my-project/global/httpHealthChecks/my-health-check
instances:
- us-central1-a/instances/web-1
- us-central1-b/instances/web-2
...
gcloud compute http-health-checks describe my-health-check
...
requestPath: /health
port: 80
...

Refer to the exhibit. A load balancer forwards HTTPS traffic to a target pool with two instances. The health check is configured on port 80 with path /health. Some users report intermittent connection errors. What is the most likely cause?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

  • Clue: "most likely"

    Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

Question 1mediummultiple choice
Read the full NAT/PAT explanation →

Exhibit

gcloud compute forwarding-rules describe my-https-rule --region=us-central1
...
IPAddress: 34.96.0.1
IPProtocol: TCP
portRange: 443-443
target: https://www.googleapis.com/compute/v1/projects/my-project/regions/us-central1/targetPools/my-target-pool
...
gcloud compute target-pools describe my-target-pool --region=us-central1
...
healthCheck: https://www.googleapis.com/compute/v1/projects/my-project/global/httpHealthChecks/my-health-check
instances:
- us-central1-a/instances/web-1
- us-central1-b/instances/web-2
...
gcloud compute http-health-checks describe my-health-check
...
requestPath: /health
port: 80
...

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

The health check is using HTTP but the backend instances only serve HTTPS, causing them to be marked unhealthy.

Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    The health check path /health does not exist on the backend instances.

    Why it's wrong here

    If the path did not exist, the health check would consistently fail, not intermittently.

  • ✓

    The health check is using HTTP but the backend instances only serve HTTPS, causing them to be marked unhealthy.

    Why this is correct

    The health check is configured on port 80 with HTTP, but the load balancer forwards HTTPS (port 443). If the instances only listen on HTTPS (port 443), the health check on port 80 will fail, marking instances unhealthy and causing connection errors.

    Clue confirmation

    The clue word "most likely" in the question point toward this answer.

    Related concept

    Static NAT maps one inside address to one outside address.

  • ✗

    The load balancer's IP address is not reachable from the internet.

    Why it's wrong here

    The forwarding rule has a public IP, and users can reach it; otherwise errors would be persistent.

  • ✗

    The instances are in different zones, causing latency.

    Why it's wrong here

    Target pools can include instances from multiple zones; this is a common configuration and not a cause of intermittent errors.

Common exam traps

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Detailed technical explanation

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

  • Static NAT maps one inside address to one outside address.
  • PAT allows many inside hosts to share one public address using ports.
  • Inside local and inside global describe the private and translated addresses.
  • NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

  • Identify inside and outside interfaces first.
  • Check whether the scenario needs static NAT, dynamic NAT or PAT.
  • Do not confuse NAT matching ACLs with normal packet-filtering intent.

Key takeaway

NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

Real-world example

How this comes up in practice

A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.

What to study next

Got this wrong? Here's your next step.

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PCA NAT questions on configuration and troubleshooting.

Related practice questions

Related PCA practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Managing Implementation and Ensuring Solution and Operations Reliability practice questions

Practise PCA questions linked to Managing Implementation and Ensuring Solution and Operations Reliability.

Designing and Planning a Cloud Solution Architecture practice questions

Practise PCA questions linked to Designing and Planning a Cloud Solution Architecture.

Managing and Provisioning a Solution Infrastructure practice questions

Practise PCA questions linked to Managing and Provisioning a Solution Infrastructure.

Designing for Security and Compliance practice questions

Practise PCA questions linked to Designing for Security and Compliance.

Analysing and Optimising Technical and Business Processes practice questions

Practise PCA questions linked to Analysing and Optimising Technical and Business Processes.

Design and plan a cloud solution architecture practice questions

Practise PCA questions linked to Design and plan a cloud solution architecture.

Manage and provision cloud infrastructure practice questions

Practise PCA questions linked to Manage and provision cloud infrastructure.

Design for security and compliance practice questions

Practise PCA questions linked to Design for security and compliance.

Analyze and optimize technical and business processes practice questions

Practise PCA questions linked to Analyze and optimize technical and business processes.

Manage implementation of cloud architecture practice questions

Practise PCA questions linked to Manage implementation of cloud architecture.

Ensure solution and operations reliability practice questions

Practise PCA questions linked to Ensure solution and operations reliability.

PCA fundamentals practice questions

Practise PCA questions linked to PCA fundamentals.

Practice this exam

Start a free PCA practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions20 questions30 questions50 questionsTimed 30
PCA practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this PCA question test?

Ensure solution and operations reliability — This question tests Ensure solution and operations reliability — Static NAT maps one inside address to one outside address..

What is the correct answer to this question?

The correct answer is: The health check is using HTTP but the backend instances only serve HTTPS, causing them to be marked unhealthy.

What should I do if I get this PCA question wrong?

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PCA NAT questions on configuration and troubleshooting.

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Static NAT maps one inside address to one outside address.

About these practice questions

Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

Last reviewed: Jul 4, 2026

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

Sign in to join the discussion.

This PCA practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCA exam.