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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 91

Julie is a developer who needs to ensure an application can properly renew its lease for AWS credentials it uses to access data in an S3 bucket. Although the application would generally use the API, what is the equivalent CLI command to perform this action?

Correct Answer: B
Comprehensive and Detailed In-Depth Explanation:
To renew AWS credential leases:
* B. Correct: "The proper command would be vault lease renew aws/creds/s3-read-only/39e6b9a2-296-
83d9-2fe0-c11e846bdc99." Targets the credential lease ID.
* Incorrect Options:
* A, C: Wrong path (roles vs. creds).
* D: Missing lease ID.
Reference:https://developer.hashicorp.com/vault/docs/commands/lease/renew
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Question 92

You are planning to deploy a new Vault cluster for your organization and notice that Vault supports a wide variety of storage backends. You need high availability since you will have multiple applications relying on the Vault service. When building your cluster, can you choose any of the available storage backends?

Correct Answer: B
Comprehensive and Detailed In-Depth Explanation:
Vault supports various storage backends (e.g., Consul, Raft, DynamoDB), but not all provide high availability (HA). HA ensures that Vault remains operational across multiple nodes, with automatic failover if a node fails-an essential feature for applications relying on Vault. The Vault documentation lists each backend's capabilities, noting that only certain ones (e.g., Consul, Raft Integrated Storage, etcd) support HA through features like leader election and data replication. Others, like Filesystem or MySQL, don't support HA natively, making them unsuitable for this requirement. Thus, you cannot choose any backend arbitrarily; the choice must align with HA needs, disproving option A and confirming option B.
References:
Storage Backends Overview
HA Considerations
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Question 93

From the options below, select the benefits of using a batch token over a service token (select four).

Correct Answer: A,C,E,F
Comprehensive and Detailed in Depth Explanation:
Batch tokens are lightweight alternatives to service tokens, with trade-offs. Let's analyze:
* A:Designed for short-lived, high-performance tasks. Correct.
* B:Cannot be root tokens; root status is service-token-specific. Incorrect.
* C:Orphan batch tokens work in replication. Correct.
* D:No accessors; unique to service tokens. Incorrect.
* E:Minimal overhead makes them scalable. Correct.
* F:No disk storage reduces cost. Correct.
Overall Explanation from Vault Docs:
"Batch tokens are encrypted blobs... lightweight, scalable, no storage cost, ideal for ephemeral workloads." Reference:https://developer.hashicorp.com/vault/tutorials/tokens/batch-tokens
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Question 94

Although batch and service tokens share many characteristics, which of the following are true only about batch tokens? (Select three)

Correct Answer: C,D,E
Comprehensive and Detailed In-Depth Explanation:
Batch and service tokens differ in key ways, with these unique tobatch tokens:
* C. Maintain a single fixed TTL: "Batch tokens maintain a single fixed TTL," non-renewable, unlike service tokens.
* D. Valid across clusters: "They are valid for either the primary or any secondary clusters," enhancing flexibility in replicated setups.
* E. Not persisted to disk: "Batch tokens are not persisted to disk," reducing exposure risk.
* Incorrect Options:
* A. Can create child tokens: "Batch tokens cannot create child tokens," unlike service tokens.
* B. Renewable: "Batch tokens are not renewable," a key distinction from service tokens.
Batch tokens prioritize lightweight, ephemeral use.
Reference:https://developer.hashicorp.com/vault/docs/concepts/tokens#token-type-comparison
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Question 95

Before data is written to the storage backend, the data is encrypted by which Vault feature?

Correct Answer: B
Comprehensive and Detailed In-Depth Explanation:
Vault's architecture includes a cryptographic barrier that encrypts all data before it's written to the storage backend. This ensures that the backend (e.g., Consul, Filesystem) only stores encrypted data, enhancing security even if the backend is compromised. The barrier uses a master key (split into unseal keys via Shamir' s Secret Sharing) to encrypt a keyring, which in turn encrypts the data. TLS certificates secure network communication, not storage encryption. Unseal keys unlock the master key, not encrypt data directly. The Transit engine is for application-level encryption, not storage backend protection. The Vault architecture docs confirm the cryptographic barrier's role.
References:
Vault Architecture Overview
Data Encryption
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