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Read each scenario carefully and choose your answer before revealing the explanation. Then check why your choice was right or wrong. Repeat until the reasoning feels automatic.

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Securing Workloads practice questions

Practise Istio Certified Associate (ICA, CNCF/Linux Foundation) (ICA) Securing Workloads practice questions — original exam-style scenarios with answer choices, explanations, and analysis of common mistakes.

Courseiva uses original exam-style practice questions designed for learning and revision. The goal is to understand the concepts, recognise exam patterns, and improve through explanations — not memorise copied exam dumps.

Reviewed byJohnson Ajibi· MSc IT Security

20 questionsDomain: Securing Workloads

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What the exam tests

What to know about Securing Workloads

Securing Workloads questions test whether you can apply the concept in context, not just recognise a definition.

How the topic appears in realistic exam-style scenarios.

Which detail in the question changes the correct answer.

How to eliminate plausible but wrong options.

How to connect the question back to the wider exam objective.

Watch out for

Common Securing Workloads exam traps

▸Answering from memory before reading the full scenario.
▸Missing a constraint such as cost, availability, security, scope or command context.
▸Choosing a broad answer when the question asks for the most specific fix.
▸Ignoring why the wrong options are tempting.

Practice set

Securing Workloads questions

20 questions · select your answer, then reveal the explanation

Question 1hardmultiple choice

Read the full Securing Workloads explanation →

You are debugging a '403 Forbidden' error on a service protected by an AuthorizationPolicy. Which tool is most effective for inspecting the policy enforcement in the data plane?

Trap 1: istioctl proxy-config rds <pod-name>

RDS is for route discovery, not authorization policies.

Trap 2: istioctl proxy-config listener <pod-name>

Listeners are for inbound/outbound ports, not policy logic.

Trap 3: istioctl proxy-config policy <pod-name>

This command does not exist.

Study all Securing Workloads common traps →

A
istioctl proxy-config rds <pod-name>
Why wrong: RDS is for route discovery, not authorization policies.
B
istioctl proxy-config listener <pod-name>
Why wrong: Listeners are for inbound/outbound ports, not policy logic.
C
istioctl proxy-config log <pod-name> --level debug
Setting log level to debug for the 'rbac' component is a standard way to see why a request was denied.
D
istioctl proxy-config policy <pod-name>
Why wrong: This command does not exist.

Securing Workloads practice questions

What to know about Securing Workloads

Common Securing Workloads exam traps

Securing Workloads questions

You are debugging a '403 Forbidden' error on a service protected by an AuthorizationPolicy. Which tool is most effective for inspecting the policy enforcement in the data plane?

Which TWO of the following are valid modes for PeerAuthentication?

A security team requires that all traffic to the 'payments' service must originate from a specific IP range (10.0.0.0/24). How can this be achieved?

What is the default behavior of Istio when no AuthorizationPolicy is present for a workload?

You have a requirement to use a custom JWT claim to authorize users. How can you map this claim in an 'AuthorizationPolicy'?

Which Istio component is responsible for enforcing the AuthorizationPolicy at the workload level?

Which THREE actions are required to successfully secure a workload using OIDC and JWT authentication in Istio?

You have a namespace 'finance' where all traffic must be encrypted using mutual TLS. You apply a PeerAuthentication policy with 'mode: STRICT' at the namespace scope. A developer reports that a legacy service in the same namespace is failing to communicate. What is the most likely reason?

You want to allow traffic only from a specific namespace 'prod' to the 'backend' service. How should you define the 'AuthorizationPolicy'?

Which THREE items are included in an Istio SPIFFE ID?

Which THREE fields in an AuthorizationPolicy are evaluated under the 'rules' section?

If you apply an AuthorizationPolicy with a 'DENY' action and an 'ALLOW' action in the same namespace, how does Istio resolve them?

What is the primary function of the 'root-cert.pem' file in the Istio control plane?

What does the 'jwksUri' field in a RequestAuthentication resource define?

Which of the following is true regarding PeerAuthentication and sidecar-less ambient mode?

How do you ensure that a workload ignores a global PeerAuthentication policy?

Which protocol is used for the Istio data plane mTLS communication?

What is the primary purpose of the 'RequestAuthentication' resource?

Which of the following describes the role of the 'trust-domain' in Istio?

In an AuthorizationPolicy, what does the 'ALLOW' action mean when combined with an empty rule set?

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