2024年最新の実際に出ると確認された 無料HashiCorp Vault-Associate試験問題
Vault-Associateリアル試験問題解答は無料
HashiCorp Vault-Associate 認定試験の出題範囲：
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質問 # 16
An organization wants to authenticate an AWS EC2 virtual machine with Vault to access a dynamic database secret. The only authentication method which they can use in this case is AWS.
- A. True
- B. False
正解：B
解説：
The statement is false. An organization can authenticate an AWS EC2 virtual machine with Vault to access a dynamic database secret using more than one authentication method. The AWS auth method is one of the options, but not the only one. The AWS auth method supports two types of authentication: ec2 and iam. The ec2 type uses the signed EC2 instance identity document to authenticate the EC2 instance. The iam type uses the AWS Signature v4 algorithm to sign a request to the sts:GetCallerIdentity API and authenticate the IAM principal. However, the organization can also use other auth methods that are compatible with EC2 instances, such as AppRole, JWT/OIDC, or Kubernetes. These methods require the EC2 instance to have some sort of identity material, such as a role ID, a secret ID, a JWT token, or a service account token, that can be used to authenticate to Vault. The identity material can be provisioned to the EC2 instance using various mechanisms, such as user data, metadata service, or cloud-init scripts. The choice of the auth method depends on the use case, the security requirements, and the trade-offs between convenience and control. Reference: AWS - Auth Methods | Vault | HashiCorp Developer, AppRole - Auth Methods | Vault | HashiCorp Developer, JWT/OIDC - Auth Methods | Vault | HashiCorp Developer, Kubernetes - Auth Methods | Vault | HashiCorp Developer
質問 # 17
Vault supports which type of configuration for source limited token?
- A. CIDR-bound tokens
- B. Domain-bound tokens
- C. Cloud-bound tokens
- D. Certificate-bound tokens
正解：A
解説：
Vault supports CIDR-bound tokens, which are tokens that can only be used from a specific set of IP addresses or network ranges. This is a way to limit the scope and exposure of a token in case it is compromised or leaked. CIDR-bound tokens can be created by specifying the bound_cidr_list parameter when creating or updating a token role, or by using the -bound-cidr option when creating a token using the vault token create command. CIDR-bound tokens can also be created by some auth methods, such as AWS or Kubernetes, that can automatically bind the tokens to the source IP or network of the client. Reference: Token - Auth Methods | Vault | HashiCorp Developer, vault token create - Command | Vault | HashiCorp Developer
質問 # 18
Security requirements demand that no secrets appear in the shell history. Which command does not meet this requirement?
- A. generate-password | vault kv put secret/password value
- B. vault kv put secret/password [email protected]
- C. vault kv put secret/password value-itsasecret
- D. vault kv put secret/password value-SSECRET_VALUE
正解：C
解説：
The command that does not meet the security requirement of not having secrets appear in the shell history is B. vault kv put secret/password value-itsasecret. This command would store the secret value "itsasecret" in the key/value secrets engine at the path secret/password, but it would also expose the secret value in the shell history, which could be accessed by other users or malicious actors. This is not a secure way of storing secrets in Vault.
The other commands are more secure ways of storing secrets in Vault without revealing them in the shell history.
A). generate-password | vault kv put secret/password value would use a pipe to pass the output of the generate-password command, which could be a script or a tool that generates a random password, to the vault kv put command, which would store the password in the key/value secrets engine at the path secret/password. The password would not be visible in the shell history, only the commands.
C). vault kv put secret/password [email protected] would use the @ syntax to read the secret value from a file named data.txt, which could be encrypted or protected by file permissions, and store it in the key/value secrets engine at the path secret/password. The file name would be visible in the shell history, but not the secret value.
D). vault kv put secret/password value-SSECRET_VALUE would use the -S syntax to read the secret value from the environment variable SECRET_VALUE, which could be set and unset in the shell session, and store it in the key/value secrets engine at the path secret/password. The environment variable name would be visible in the shell history, but not the secret value.
Reference:
[Write Secrets | Vault | HashiCorp Developer]
質問 # 19
Running the second command in the GUI CLI will succeed.
- A. True
- B. False
正解：B
解説：
Running the second command in the GUI CLI will fail. The second command is vault kv put secret/creds passcode=my-long-passcode. This command attempts to write a secret named creds with the value passcode=my-long-passcode to the secret path, which is the default path for the kv secrets engine. However, the kv secrets engine is not enabled at the secret path, as shown by the first command vault secrets list, which lists the enabled secrets engines and their paths. The only enabled secrets engine is the transit secrets engine at the transit path. Therefore, the second command will fail with an error message saying that no secrets engine is mounted at the path secret/. To make the second command succeed, the kv secrets engine must be enabled at the secret path or another path, using the vault secrets enable command. For example, vault secrets enable -path=secret kv would enable the kv secrets engine at the secret path. Reference: kv - Command | Vault | HashiCorp Developer, vault secrets enable - Command | Vault | HashiCorp Developer
質問 # 20
What are orphan tokens?
- A. Orphan tokens are tokens with a use limit so you can set the number of uses when you create them
- B. Orphan tokens do not expire when their own max TTL is reached
- C. Orphan tokens are not children of their parent; therefore, orphan tokens do not expire when their parent does
- D. Orphan tokens are tokens with no policies attached
正解：B
解説：
Orphan tokens are tokens that are root of their own token tree. This means that they do not have any parent token associated with them, and they do not expire when their parent token expires. Orphan tokens are useful for scenarios where you need a short-lived and independent token, such as for testing or debugging purposes. Orphan tokens can also be used to create temporary access tokens for applications or services that need to communicate with Vault without using a long-lived root token. Reference: Tokens | Vault | HashiCorp Developer, Vault cli: how to create orphan token with role - HashiCorp Discuss
質問 # 21
Which statement describes the results of this command: $ vault secrets enable transit
- A. Fails due to missing -path parameter
- B. Enables the transit secrets engine at secret path
- C. Enables the transit secrets engine at transit path
- D. Fails because the transit secrets engine is enabled by default
- E. Requires a root token to execute the command successfully
正解：C
解説：
The command vault secrets enable transit enables the transit secrets engine at the transit path. The transit secrets engine is a secrets engine that handles cryptographic functions on data in-transit, such as encryption, decryption, signing, verification, hashing, and random bytes generation. The transit secrets engine does not store the data sent to it, but only performs the requested operations and returns the results. The transit secrets engine can also be viewed as "cryptography as a service" or "encryption as a service". The command vault secrets enable transit uses the default path of transit for the secrets engine, but this can be changed by using the -path option. For example, vault secrets enable -path=my-transit transit would enable the transit secrets engine at the my-transit path. Reference: Transit - Secrets Engines | Vault | HashiCorp Developer, vault secrets enable - Command | Vault | HashiCorp Developer
質問 # 22
What can be used to limit the scope of a credential breach?
- A. Sharing credentials between applications
- B. Storage of secrets in a distributed ledger
- C. Enable audit logging
- D. Use of a short-lived dynamic secrets
正解：D
解説：
Using a short-lived dynamic secrets can help limit the scope of a credential breach by reducing the exposure time of the secrets. Dynamic secrets are generated on-demand by Vault and automatically revoked when they are no longer needed. This way, the credentials are not stored in plain text or in a static database, and they can be rotated frequently to prevent unauthorized access. Dynamic secrets also provide encryption as a service, which means that they perform cryptographic operations on data in-transit without storing any data. This adds an extra layer of security and reduces the risk of data leakage or tampering. Reference: Dynamic secrets | Vault | HashiCorp Developer, What are dynamic secrets and why do I need them? - HashiCorp
質問 # 23
The vault lease renew command increments the lease time from:
- A. The current time
- B. The end of the lease
正解：A
解説：
The vault lease renew command increments the lease time from the current time, not the end of the lease. This means that the user can request a specific amount of time they want remaining on the lease, termed the increment. This is not an increment at the end of the current TTL; it is an increment from the current time. For example, vault lease renew -increment=3600 my-lease-id would request that the TTL of the lease be adjusted to 1 hour (3600 seconds) from now. Having the increment be rooted at the current time instead of the end of the lease makes it easy for users to reduce the length of leases if they don't actually need credentials for the full possible lease period, allowing those credentials to expire sooner and resources to be cleaned up earlier. The requested increment is completely advisory. The backend in charge of the secret can choose to completely ignore it1. Reference:
Lease, Renew, and Revoke | Vault | HashiCorp Developer
質問 # 24
Which of the following vault lease operations uses a lease _ id as an argument? Choose two correct answers.
- A. describe
- B. create
- C. renew
- D. revoke -prefix
- E. revoke
正解：C、E
解説：
The vault lease operations that use a lease_id as an argument are renew and revoke. The renew operation allows a client to extend the validity of a lease associated with a secret or a token. The revoke operation allows a client to terminate a lease immediately and invalidate the secret or the token. Both operations require a lease_id as an argument to identify the lease to be renewed or revoked. The lease_id can be obtained from the response of reading a secret or creating a token, or from the vault lease list command. The other operations, revoke-prefix, create, and describe, do not use a lease_id as an argument. The revoke-prefix operation allows a client to revoke all secrets or tokens generated under a given prefix. The create operation allows a client to create a new lease for a secret. The describe operation allows a client to view information about a lease, such as its TTL, policies, and metadata. Reference: Lease, Renew, and Revoke | Vault | HashiCorp Developer, vault lease - Command | Vault | HashiCorp Developer
質問 # 25
What is the Vault CLI command to query information about the token the client is currently using?
- A. vault self-lookup
- B. vault lookup self
- C. vault lookup token
- D. vault token lookup
正解：D
解説：
The Vault CLI command to query information about the token the client is currently using is vault token lookup. This command displays information about the token or accessor provided as an argument, or the locally authenticated token if no argument is given. The information includes the token ID, accessor, policies, TTL, creation time, and metadata. This command can be useful for debugging and auditing purposes, as well as for renewing or revoking tokens. Reference: token lookup - Command | Vault | HashiCorp Developer, Tokens | Vault | HashiCorp Developer
質問 # 26
An authentication method should be selected for a use case based on:
- A. The strongest available cryptographic hash for the use case
- B. Compatibility with the secret engine which is to be used
- C. The auth method that best establishes the identity of the client
- D. The cloud provider for which the client is located on
正解：C
解説：
An authentication method should be selected for a use case based on the auth method that best establishes the identity of the client. The identity of the client is the basis for assigning a set of policies and permissions to the client in Vault. Different auth methods have different ways of verifying the identity of the client, such as using passwords, tokens, certificates, cloud credentials, etc. Depending on the use case, some auth methods may be more suitable or convenient than others. For example, for human users, the userpass or ldap auth methods may be easy to use, while for machines or applications, the approle or aws auth methods may be more secure and scalable. The choice of the auth method should also consider the trade-offs between security, performance, and usability. Reference: Auth Methods | Vault | HashiCorp Developer, Authentication - Concepts | Vault | HashiCorp Developer
質問 # 27
Which of the following is a machine-oriented Vault authentication backend?
- A. AppRole
- B. Okta
- C. GitHub
- D. Transit
正解：A
解説：
AppRole is a machine-oriented authentication method that allows machines or applications to authenticate with Vault using a role ID and a secret ID. The role ID is a unique identifier for the application, and the secret ID is a single-use credential that can be delivered to the application securely. AppRole is designed to provide secure introduction of machines and applications to Vault, and to support the principle of least privilege by allowing fine-grained access control policies to be attached to each role1.
Okta, GitHub, and Transit are not machine-oriented authentication methods. Okta and GitHub are user-oriented authentication methods that allow users to authenticate with Vault using their Okta or GitHub credentials23. Transit is not an authentication method at all, but a secrets engine that provides encryption as a service4.
Reference:
AppRole Auth Method | Vault | HashiCorp Developer
Okta Auth Method | Vault | HashiCorp Developer
GitHub Auth Method | Vault | HashiCorp Developer
Transit Secrets Engine | Vault | HashiCorp Developer
質問 # 28
When using Integrated Storage, which of the following should you do to recover from possible data loss?
- A. Use audit logs
- B. Use server logs
- C. Use snapshot
- D. Failover to a standby node
正解：C
解説：
Integrated Storage is a Raft-based storage backend that allows Vault to store its data internally without relying on an external storage system. It also enables Vault to run in high availability mode with automatic leader election and failover. However, Integrated Storage is not immune to data loss or corruption due to hardware failures, network partitions, or human errors. Therefore, it is recommended to use the snapshot feature to backup and restore the Vault data periodically or on demand. A snapshot is a point-in-time capture of the entire Vault data, including the encrypted secrets, the configuration, and the metadata. Snapshots can be taken and restored using the vault operator raft snapshot command or the sys/storage/raft/snapshot API endpoint. Snapshots are encrypted and can only be restored with a quorum of unseal keys or recovery keys. Snapshots are also portable and can be used to migrate data between different Vault clusters or storage backends. Reference: https://developer.hashicorp.com/vault/docs/concepts/integrated-storage1, https://developer.hashicorp.com/vault/docs/commands/operator/raft/snapshot2, https://developer.hashicorp.com/vault/api-docs/system/storage/raft/snapshot3
質問 # 29
Where can you set the Vault seal configuration? Choose two correct answers.
- A. Environment variables
- B. Cloud Provider KMS
- C. Vault API
- D. Vault configuration file
- E. Vault CLI
正解：A、D
解説：
The Vault seal configuration can be set in two ways: through the Vault configuration file or through environment variables. The Vault configuration file is a text file that contains the settings and options for Vault, such as the storage backend, the listener, the telemetry, and the seal. The seal stanza in the configuration file specifies the seal type and the parameters to use for additional data protection, such as using HSM or Cloud KMS solutions to encrypt and decrypt the root key. The seal configuration can also be set through environment variables, which will take precedence over the values in the configuration file. The environment variables are prefixed with VAULT_SEAL_ and followed by the seal type and the parameter name. For example, VAULT_SEAL_AWSKMS_REGION sets the region for the AWS KMS seal. Reference: Seals - Configuration | Vault | HashiCorp Developer, Environment Variables | Vault | HashiCorp Developer
質問 # 30
Which of the following cannot define the maximum time-to-live (TTL) for a token?
- A. A parent token TTL e password rotation tools and practices
- B. By the authentication method t natively provide a method of expiring credentials
- C. System max TTL
- D. By the mount endpoint configuration very password used
- E. By the client system f credentials leaking
正解：E
解説：
The maximum time-to-live (TTL) for a token is defined by the lowest value among the following factors:
The authentication method that issued the token. Each auth method can have a default and a maximum TTL for the tokens it generates. These values can be configured by the auth method's mount options or by the auth method's specific endpoints.
The mount endpoint configuration that the token is accessing. Each secrets engine can have a default and a maximum TTL for the leases it grants. These values can be configured by the secrets engine's mount options or by the secrets engine's specific endpoints.
A parent token TTL. If a token is created by another token, it inherits the remaining TTL of its parent token, unless the parent token has an infinite TTL (such as the root token). A child token cannot outlive its parent token.
System max TTL. This is a global limit for all tokens and leases in Vault. It can be configured by the system backend's max_lease_ttl option.
The client system that uses the token cannot define the maximum TTL for the token, as this is determined by Vault's configuration and policies. The client system can only request a specific TTL for the token, but this request is subject to the limits imposed by the factors above.
質問 # 31
Your DevOps team would like to provision VMs in GCP via a CICD pipeline. They would like to integrate Vault to protect the credentials used by the tool. Which secrets engine would you recommend?
- A. Identity secrets engine
- B. Key/Value secrets engine version 2
- C. Google Cloud Secrets Engine
- D. SSH secrets engine
正解：C
解説：
The Google Cloud Secrets Engine is the best option for the DevOps team to provision VMs in GCP via a CICD pipeline and integrate Vault to protect the credentials used by the tool. The Google Cloud Secrets Engine can dynamically generate GCP service account keys or OAuth tokens based on IAM policies, which can be used to authenticate and authorize the CICD tool to access GCP resources. The credentials are automatically revoked when they are no longer used or when the lease expires, ensuring that the credentials are short-lived and secure. The DevOps team can configure rolesets or static accounts in Vault to define the scope and permissions of the credentials, and use the Vault API or CLI to request credentials on demand. The Google Cloud Secrets Engine also supports generating access tokens for impersonated service accounts, which can be useful for delegating access to other service accounts without storing or managing their keys1.
The Identity Secrets Engine is not a good option for this use case, because it does not generate GCP credentials, but rather generates identity tokens that can be used to access other Vault secrets engines or namespaces2. The Key/Value Secrets Engine version 2 is also not a good option, because it does not generate dynamic credentials, but rather stores and manages static secrets that the user provides3. The SSH Secrets Engine is not a good option either, because it does not generate GCP credentials, but rather generates SSH keys or OTPs that can be used to access remote hosts via SSH4.
Reference:
Google Cloud - Secrets Engines | Vault | HashiCorp Developer
Identity - Secrets Engines | Vault | HashiCorp Developer
KV - Secrets Engines | Vault | HashiCorp Developer
SSH - Secrets Engines | Vault | HashiCorp Developer
質問 # 32
You are using the Vault userpass auth method mounted at auth/userpass. How do you create a new user named "sally" with password "h0wN0wB4r0wnC0w"? This new user will need the power-users policy.
- A.
- B.
- C.
- D.
正解：C
解説：
To create a new user named "sally" with password "h0wN0wB4r0wnC0w" and the power-users policy, you would use the Vault userpass auth method mounted at auth/userpass. You would use the following command: "vault write auth/userpass/users/sally password=h0wN0wB4r0wnC0w policies=power-users". This command would create a new user named "sally" with the specified password and policy. Reference:
[Userpass Auth Method | Vault | HashiCorp Developer]
[Create Vault policies | Vault | HashiCorp Developer]
質問 # 33
What is a benefit of response wrapping?
- A. Ensure that only a single party can ever unwrap the token and see what's inside
- B. Load balanc secret generation across a Vault cluster
- C. Log every use of a secret
- D. Provide error recovery to a secret so it is not corrupted in transit
正解：A
解説：
Response wrapping is a feature that allows Vault to take the response it would have sent to a client and instead insert it into the cubbyhole of a single-use token, returning that token instead. The client can then unwrap the token and retrieve the original response. Response wrapping has several benefits, such as providing cover, malfeasance detection, and lifetime limitation for the secret data. One of the benefits is to ensure that only a single party can ever unwrap the token and see what's inside, as the token can be used only once and cannot be unwrapped by anyone else, even the root user or the creator of the token. This provides a way to securely distribute secrets to the intended recipients and detect any tampering or interception along the way5.
The other options are not benefits of response wrapping:
Log every use of a secret: Response wrapping does not log every use of a secret, as the secret is not directly exposed to the client or the network. However, Vault does log the creation and deletion of the response-wrapping token, and the client can use the audit device to log the unwrapping operation6.
Load balance secret generation across a Vault cluster: Response wrapping does not load balance secret generation across a Vault cluster, as the secret is generated by the Vault server that receives the request and the response-wrapping token is bound to that server. However, Vault does support high availability and replication modes that can distribute the load and improve the performance of the cluster7.
Provide error recovery to a secret so it is not corrupted in transit: Response wrapping does not provide error recovery to a secret so it is not corrupted in transit, as the secret is encrypted and stored in the cubbyhole of the token and cannot be modified or corrupted by anyone. However, if the token is lost or expired, the secret cannot be recovered either, so the client should have a backup or retry mechanism to handle such cases.
質問 # 34
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