VA-003 Practice Test 35 — 15 Questions

Question 1

Which authentication method allows a user to authenticate using a one-time password (OTP) generated by an authenticator app?

Accepted Answer

Okta. Okta supports Time-based One-Time Password (TOTP) as an authentication factor, which is the standard method used by authenticator apps like Google Authenticator or Microsoft Authenticator. TOTP generates a temporary code based on a shared secret and the current time, as defined in RFC 6238, and Okta's multifactor authentication (MFA) policies can require this OTP for user login. This makes Okta the correct choice for authenticating with an OTP from an authenticator app.

Answer

Userpass

Answer

GitHub

Answer

LDAP

Question 2

Which THREE of the following are true about the KV v2 secrets engine? (Select exactly 3.)

Accepted Answer

It supports check-and-set operations for concurrent updates.. KV v2 supports check-and-set (CAS) operations via the `cas` parameter in the write path. CAS ensures that a write only succeeds if the current version matches the expected value, preventing concurrent overwrites and providing optimistic locking for secret updates.

Answer

It does not support deletion of secrets.

Answer

It does not support undoing changes.

Question 3

Refer to the exhibit. A DevOps engineer runs `vault read -format=json transit/keys/mykey` and receives the output shown. A microservice attempts to decrypt data that was encrypted with version 1 of the key. Will the decryption succeed?

Accepted Answer

Yes, because min_decryption_version is 1, which allows decryption with version 1 and higher.. The `min_decryption_version` parameter in Vault's transit secrets engine specifies the lowest key version that can be used for decryption. In the exhibit, `min_decryption_version` is set to 1, meaning any version from 1 upward is allowed. Since the data was encrypted with version 1, decryption will succeed. This parameter does not block decryption with version 1; it only prevents decryption with versions lower than the specified value.

Answer

Yes, because min_decryption_version does not affect decryption.

Answer

No, because min_decryption_version is 1, so only version 2 and higher can decrypt.

Answer

No, because the data was encrypted with version 1 and min_decryption_version is 1, so decryption is blocked.

Question 4

A security audit requires tracking token usage without exposing the token value itself. Which token attribute should be logged?

Accepted Answer

Token accessor. The token accessor is a non-sensitive reference to a Vault token that can be used for token lifecycle operations (e.g., lookup, renewal, revocation) without exposing the actual token value. Logging the accessor satisfies audit requirements for tracking token usage while maintaining security, as the accessor cannot be used to authenticate requests.

Answer

Token value

Answer

Creation TTL

Answer

Policy list

Question 5

A Vault administrator is troubleshooting an issue where after a network outage, the Vault cluster is sealed and cannot be unsealed. The cluster has 5 nodes using Integrated Storage. The administrator runs `vault status` on each node and receives 'sealed' response. The administrator suspects that the cluster lost quorum during the outage. The administrator checks the Raft configuration and finds that there are 3 voter nodes and 2 non-voter nodes. Which action should the administrator take to recover the cluster?

Accepted Answer

Use `vault operator raft recover` on a voter node to create a new cluster.. When a Vault cluster with Integrated Storage loses quorum (more than half of voter nodes are unavailable), the cluster cannot unseal because Raft requires a quorum of voters to elect a leader and process operations. Since all 5 nodes are sealed and the cluster has 3 voters, the outage likely caused the loss of at least 2 voters, breaking quorum. The correct recovery procedure is to use `vault operator raft recover` on a voter node, which creates a new single-node cluster with the existing data, allowing the administrator to then unseal and rejoin other nodes.

Answer

Manually unseal all nodes simultaneously.

Answer

Use `vault operator raft remove-peer` to remove the non-voter nodes.

Answer

Use `vault operator raft recover` on one of the non-voter nodes.

Question 6

A large enterprise runs Vault in a production environment with hundreds of applications. Each application uses a unique Vault token with a 30-day TTL. The tokens are created by a central CI/CD pipeline using Vault's token auth method. Recently, the security team noticed that several tokens with suspicious activity have been created with a 90-day TTL, and the tokens appear to be long-lived and not revoked after use. The CI/CD pipeline logs show no anomalies. The audit logs reveal that the tokens in question were created by a human user 'jdoe' using a token with the 'admin' policy. The 'admin' policy grants '*' capabilities on all paths. The Vault token accessor shows that the suspicious tokens have a 'creation_ttl' of 2160h (90 days) and 'explicit_max_ttl' of 0s. The Vault configuration uses a default lease TTL of 24h and a max lease TTL of 720h (30 days). Which action should the security team take to prevent such incidents in the future without breaking existing applications?

Accepted Answer

Create a dedicated token role with a max TTL of 720h (30 days) and restrict token creation to that role; revoke the 'admin' policy's create permission on auth/token/create.. The root cause is that the 'admin' policy grants unrestricted token creation permissions, allowing a human user to bypass the intended CI/CD pipeline controls and create tokens with a 90-day TTL. By creating a dedicated token role with a max TTL of 720h (30 days) and revoking the 'admin' policy's create permission on 'auth/token/create', the team enforces a maximum TTL of 30 days for all tokens created via the token auth method, matching the system's max lease TTL and preventing long-lived tokens without breaking existing applications that use the CI/CD pipeline.

Answer

Remove the 'admin' policy from all human users and require them to use a different authentication method.

Answer

Implement a Sentinel policy that blocks token creation by any user except the CI/CD pipeline.

Answer

Reduce the system max lease TTL to 720h (30 days) and enforce that all tokens must have explicit_max_ttl set.

Question 7

A company is migrating from on-premises to cloud and needs to authenticate applications using short-lived credentials. They have a mix of workloads: some on AWS EC2, some on Kubernetes, and some in their own datacenter. Which Vault authentication method provides a unified solution that works across all these environments without requiring a shared secret?

Accepted Answer

JWT/OIDC authentication. JWT/OIDC authentication is the correct choice because it provides a unified, standards-based method for verifying identity across AWS EC2, Kubernetes, and on-premises environments without requiring a shared secret. By leveraging OpenID Connect (OIDC) identity tokens issued by trusted providers (e.g., AWS IAM Identity Center, Kubernetes service account token, or an on-premises IdP), Vault can validate the token's signature and claims to authenticate workloads. This eliminates the need for pre-shared secrets or per-environment-specific integrations, making it ideal for heterogeneous deployments.

Answer

AWS IAM authentication

Answer

Kubernetes authentication

Answer

AppRole authentication

Question 8

A development team wants to encrypt sensitive data before storing it in a database. They don't want to manage encryption keys themselves. Which secrets engine should they use?

Accepted Answer

Transit. The Transit secrets engine is designed to encrypt data in transit or at rest without exposing the encryption keys to the client. It performs cryptographic operations (encrypt/decrypt) on data sent to Vault, so the development team never manages or stores the keys themselves. This matches the requirement to avoid key management while encrypting sensitive data before database storage.

Answer

PKI

Answer

AWS

Answer

KV v2

Question 9

An application uses transit encryption with convergent encryption enabled. Which THREE statements are true about convergent encryption? (Choose three.)

Accepted Answer

It produces the same ciphertext for the same plaintext and context.. Convergent encryption derives the encryption key from the plaintext content itself, typically by hashing the plaintext. Because the same plaintext always produces the same key, and the encryption algorithm is deterministic (no random nonce), the resulting ciphertext is identical for identical plaintexts. This property directly enables deduplication of encrypted data, as identical ciphertexts can be identified and stored only once.

Answer

It requires a separate key for each context.

Answer

It is typically slower than non-convergent encryption.

Question 10

During a performance test, Vault becomes unresponsive for several seconds when the storage backend experiences high latency. Which architectural change would best improve Vault's resilience to storage latency?

Accepted Answer

Configure Performance Standby nodes. Performance Standby nodes are designed to handle read requests and can serve as hot standbys that take over active duty if the primary node becomes unresponsive due to storage backend latency. They maintain a local copy of the data via replication, allowing them to continue serving requests without waiting for the slow storage backend, thus improving resilience to high-latency storage conditions.

Answer

Add more storage backend nodes

Answer

Disable storage replication

Answer

Increase the number of Vault nodes without replication

Question 11

An operator wants to enable the AWS auth method at the default path. Which curl command is correct?

Accepted Answer

curl -X POST -H "X-Vault-Token: s.abc" -d '{"type":"aws"}' https://vault:8200/v1/sys/auth/aws. Enabling an auth method at the default path requires a POST request to the `/v1/sys/auth/aws` endpoint with a JSON payload containing the `type` field set to `"aws"`. The POST method is used to create a new mount, and the trailing slash is optional but accepted. The `X-Vault-Token` header provides the necessary authentication token.

Answer

curl -X POST -H "X-Vault-Token: s.abc" -d '{"type":"aws"}' https://vault:8200/v1/sys/auth/aws/

Answer

curl -X PUT -H "X-Vault-Token: s.abc" -d '{"type":"aws"}' https://vault:8200/v1/sys/auth/aws

Answer

curl -X POST -H "X-Vault-Token: s.abc" -d '{"method":"aws"}' https://vault:8200/v1/sys/auth/aws

Question 12

An organization uses Vault with the JWT/OIDC authentication method. After configuring the provider, users can authenticate, but the scopes requested do not include the email claim needed for policy mapping. What should the administrator do?

Accepted Answer

Add the 'email' scope to the OIDC auth method config. The email claim is not included in the JWT because the OIDC provider was not requested to issue it. In OIDC, claims are delivered only when the corresponding scope (e.g., 'email') is included in the authentication request. Adding the 'email' scope to the Vault OIDC auth method configuration ensures the provider returns the email claim, which can then be used for policy mapping.

Answer

Add a policy that uses the email claim

Answer

Modify the OIDC provider's configuration in Vault

Answer

Create a custom claim mapping in the OIDC auth method

Question 13

Refer to the exhibit. A developer ran the command and received the JSON output. Which command would retrieve only the value of 'api_key' in plain text?

Accepted Answer

vault read -field=data.api_key secret/data/team. The `vault read` command with `-field=data.api_key` uses dot notation to navigate the nested JSON structure returned by the KV v2 secrets engine at `secret/data/team`. The KV v2 engine wraps the actual data under a `data` key, so to extract the `api_key` value directly, you must specify the full path `data.api_key`. Without this, the command would either fail or return the entire JSON object.

Answer

vault read -field=api_key secret/team

Answer

vault read -field=api_key secret/data/team

Answer

vault read secret/data/team

Question 14

A large enterprise runs Vault in a high-availability cluster with integrated storage (Raft). They notice that read requests are not being evenly distributed across nodes, causing some nodes to have high load. They want to offload read operations to standby nodes. What feature should they enable to achieve this?

Accepted Answer

Enable performance standby nodes. Performance standby nodes are a Vault Enterprise feature designed to handle read requests without participating in the Raft consensus write quorum. By enabling this, read operations are offloaded to standby nodes, distributing the load evenly and reducing the burden on the active cluster nodes. This directly addresses the uneven read distribution and high load on specific nodes.

Answer

Configure a load balancer with a round-robin algorithm

Answer

Enable read replicas on standby nodes

Answer

Increase the number of Raft nodes to distribute reads

Question 15

An administrator configures a database secrets engine with a role that uses 'creation_statements' and 'revocation_statements'. However, when a lease expires, the database user is not revoked. What is the most likely cause?

Accepted Answer

The revocation statement is incorrect. The most likely cause is that the revocation statement is incorrect. When a lease expires, Vault executes the SQL statement defined in `revocation_statements` to delete or disable the database user. If this statement has a syntax error, references a non-existent table, or fails to match the user created by `creation_statements`, the revocation will silently fail, leaving the user active in the database.

Answer

The connection string is invalid

Answer

The database user has been manually deleted

Answer

The lease duration is set too high