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  1. Home
  2. HashiCorp Certification
  3. HCVA0-003 Exam
  4. HashiCorp.HCVA0-003.v2025-07-18.q98 Dumps
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Question 81

You have enabled the Transit secrets engine on your Vault cluster to provide an "encryption as a service" service as your team develops new applications. What is a prime use case for the Transit secrets engine?

Correct Answer: A
Comprehensive and Detailed In-Depth Explanation:
The Transit secrets engine provides encryption as a service. The Vault documentation states:
"The Transit secrets engine is used to encrypt data in transit. It does NOT store the data locally. It simply encrypts the data and returns the ciphertext to the requester. A prime use case is encrypting data before being written to an external storage service like Amazon S3."
-Vault Secrets: Transit
* A: Correct. Encrypting data for S3 is a key use case:
"Encrypting data before being written to an Amazon S3 bucket ensures that sensitive data is protected both in transit and at rest."
-Transit Tutorial
* B: Incorrect; Transit doesn't store data long-term.
* C: SSH credentials are handled by the SSH engine.
* D: X.509 certificates are managed by the PKI engine.
References:
Vault Secrets: Transit
Transit Tutorial
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Question 82

Based on the output below, how many policies have been added to Vault?
$ vault policy list
base
default
root
web-app-1
automation-team

Correct Answer: A
Comprehensive and Detailed In-Depth Explanation:
The vault policy list command displays all policies in Vault. The output lists five policies: "base","default",
"root", "web-app-1", and "automation-team". However, "root" and "default" are built-in policies:
* Built-in Policies:
* "root": A superuser policy created by default.
* "default": Provides common permissions, also default. "Vault has two default policies, root and default."
* Added Policies:
* "base", "web-app-1", "automation-team" are not built-in, meaning they were added. Thus,3 policieswere added.
* Incorrect Options:
* B. 4: Overcounts by including one built-in.
* C. 1, D. 2: Undercounts the added policies.
Reference:https://developer.hashicorp.com/vault/docs/concepts/policies#built-in-policies
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Question 83

Where does the Vault Agent store its cache?

Correct Answer: D
The Vault Agent stores its cache in memory, which means that it does not persist the cached tokens and secrets to disk or any other storage backend. This makes the cache more secure and performant, as it avoids exposing the sensitive data to potential attackers or unauthorized access. However, this also means that the cache is volatile and will be lost if the agent process is terminated or restarted. To mitigate this, the agent can optionally use a persistent cache file to restore the tokens and leases from a previous agent process. The persistent cache file is encrypted using a key derived from the agent's auto-auth token and a nonce, and it is stored in a user-specified location on disk. References: Caching - Vault Agent | Vault | HashiCorp Developer, Vault Agent Persistent Caching | Vault | HashiCorp Developer
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Question 84

Which of the following features in Vault will replicate service tokens between clusters?

Correct Answer: A
Comprehensive and Detailed In-Depth Explanation:
Vault Enterprise supports replication to synchronize data across clusters, with two main types:Disaster Recovery (DR) ReplicationandPerformance Replication. Only one replicates service tokens:
* A. Disaster Recovery Replication: This feature replicates critical data, including service tokens, between clusters for warm-standby failover. "DR clusters are essentially a warm-standby and do replicate tokens from the primary cluster," per the documentation. This ensures continuity in disaster scenarios.
* Incorrect Options:
* B. Performance Replication: Focuses on scaling read performance, not token replication.
"Performance clusters create and maintain their own tokens. These tokens are NOT replicated."
* C. Vault Agent: A client-side tool for token management, not cluster replication. "It does not specifically replicate service tokens between clusters."
* D. Integrated Storage: A storage backend, not a replication mechanism. "It does not directly replicate service tokens between clusters." DR Replication is designed for full data consistency, including tokens, across clusters.
Reference:https://developer.hashicorp.com/vault/docs/enterprise/replication
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Question 85

You are using Vault to generate dynamic credentials for a Microsoft SQL server to perform queries for a month-end report. The report seems to be taking much longer than expected due to degradation on the underlying server, and you are afraid that Vault might automatically revoke the credentials. How can you extend the time the credentials are valid to ensure your month-end query is successful?

Correct Answer: A
Comprehensive and Detailed In-Depth Explanation:
Dynamic credentials have a lease with a TTL, after which Vault revokes them. To extend their validity, you renew the lease. The Vault documentation states:
"If a lease has been created in Vault, it has an associated TTL in which it will expire and be revoked. If the lease needs to be extended for some reason, you can use the command vault lease renew <lease_id> to extend the TTL of the lease so it will not expire at its original TTL and will be extended by the time specified in seconds from the current time the lease renewal was issued."
-Vault Commands: lease renew
* A: Correct. Renewing the lease (e.g., vault lease renew <lease_id>) extends the TTL:
"Renewing the lease of the dynamic credentials in Vault allows you to extend the validity period without having to generate new credentials."
-Vault Commands: lease renew
* B: Generating a new lease creates new credentials, disrupting the query.
* C: Creating a new role doesn't extend existing credentials' TTL.
* D: Revoking the lease terminates the credentials, halting the query.
References:
Vault Commands: lease renew
Vault Concepts: Leases
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