[Dec-2023] HashiCorp Vault-Associate Exam: Basic Questions With Answers
New 2023 Realistic Free HashiCorp Vault-Associate Exam Dump Questions and Answer
HashiCorp Vault-Associate Exam Syllabus Topics:
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NEW QUESTION # 22
A web application uses Vault's transit secrets engine to encrypt data in-transit. If an attacker intercepts the data in transit which of the following statements are true? Choose two correct answers.
- A. Even if the attacker was able to access the raw data, they would only have encrypted bits (TLS in transit)
- B. The Vault administrator would need to seal the Vault server immediately
- C. The keys can be rotated and min_decryption_version moved forward to ensure this data cannot be decrypted
- D. You can rotate the encryption key so that the attacker won't be able to decrypt the data
Answer: A,C
Explanation:
A web application that uses Vault's transit secrets engine to encrypt data in-transit can benefit from the following security features:
Even if the attacker was able to access the raw data, they would only have encrypted bits (TLS in transit). This means that the attacker would need to obtain the encryption key from Vault in order to decrypt the data, which is protected by Vault's authentication and authorization mechanisms. The transit secrets engine does not store the data sent to it, so the attacker cannot access the data from Vault either.
The keys can be rotated and min_decryption_version moved forward to ensure this data cannot be decrypted. This means that the web application can periodically change the encryption key used to encrypt the data, and set a minimum decryption version for the key, which prevents older versions of the key from being used to decrypt the data. This way, even if the attacker somehow obtained an old version of the key, they would not be able to decrypt the data that was encrypted with a newer version of the key.
The other statements are not true, because:
You cannot rotate the encryption key so that the attacker won't be able to decrypt the data. Rotating the key alone does not prevent the attacker from decrypting the data, as they may still have access to the old version of the key that was used to encrypt the data. You need to also move the min_decryption_version forward to invalidate the old version of the key.
The Vault administrator would not need to seal the Vault server immediately. Sealing the Vault server would make it inaccessible to both the attacker and the legitimate users, and would require unsealing it with the unseal keys or the recovery keys. Sealing the Vault server is a last resort option in case of a severe compromise or emergency, and is not necessary in this scenario, as the attacker does not have access to the encryption key or the data in Vault. Reference: Transit - Secrets Engines | Vault | HashiCorp Developer, Encryption as a service: transit secrets engine | Vault | HashiCorp Developer
NEW QUESTION # 23
How many Shamir's key shares are required to unseal a Vault instance?
- A. A quorum of key shares
- B. One or more keys
- C. The threshold number of key shares
- D. All key shares
Answer: C
Explanation:
Shamir's Secret Sharing is a cryptographic algorithm that allows a secret to be split into multiple parts, called key shares, such that a certain number of key shares are required to reconstruct the secret. The number of key shares and the threshold number are configurable parameters that depend on the desired level of security and availability. Vault uses Shamir's Secret Sharing to protect its master key, which is used to encrypt and decrypt the data encryption key that secures the Vault data. When Vault is initialized, it generates a master key and splits it into a configured number of key shares, which are then distributed to trusted operators. To unseal Vault, the threshold number of key shares must be provided to reconstruct the master key and decrypt the data encryption key. This process ensures that no single operator can access the Vault data without the cooperation of other key holders. Reference: https://developer.hashicorp.com/vault/docs/concepts/seal4, https://developer.hashicorp.com/vault/docs/commands/operator/init5, https://developer.hashicorp.com/vault/docs/commands/operator/unseal6
NEW QUESTION # 24
An organization would like to use a scheduler to track & revoke access granted to a job (by Vault) at completion. What auth-associated Vault object should be tracked to enable this behavior?
- A. Token accessor
- B. Token ID
- C. Authentication method
- D. Lease ID
Answer: D
Explanation:
A lease ID is a unique identifier that is assigned by Vault to every dynamic secret and service type authentication token. A lease ID contains information such as the secret path, the secret version, the secret type, etc. A lease ID can be used to track and revoke access granted to a job by Vault at completion, as it allows the scheduler to perform the following operations:
Lookup the lease information by using the vault lease lookup command or the sys/leases/lookup API endpoint. This will return the metadata of the lease, such as the expire time, the issue time, the renewable status, and the TTL.
Renew the lease if needed by using the vault lease renew command or the sys/leases/renew API endpoint. This will extend the validity of the secret or the token for a specified increment, or reset the TTL to the original value if no increment is given.
Revoke the lease when the job is completed by using the vault lease revoke command or the sys/leases/revoke API endpoint. This will invalidate the secret or the token immediately and prevent any further renewals. For example, with the AWS secrets engine, the access keys will be deleted from AWS the moment a lease is revoked.
A lease ID is different from a token ID or a token accessor. A token ID is the actual value of the token that is used to authenticate to Vault and perform requests. A token ID should be treated as a secret and protected from unauthorized access. A token accessor is a secondary identifier of the token that is used for token management without revealing the token ID. A token accessor can be used to lookup, renew, or revoke a token, but not to authenticate to Vault or access secrets. A token ID or a token accessor can be used to revoke the token itself, but not the leases associated with the token. To revoke the leases, a lease ID is required.
An authentication method is a way to verify the identity of a user or a machine and issue a token with appropriate policies and metadata. An authentication method is not an object that can be tracked or revoked, but a configuration that can be enabled, disabled, tuned, or customized by using the vault auth commands or the sys/auth API endpoints.
NEW QUESTION # 25
The following three policies exist in Vault. What do these policies allow an organization to do?
- A. Create a transit encryption key for encrypting, decrypting, and rewrapping encrypted data
- B. Separates permissions allowed on actions associated with the transit secret engine
- C. Encrypt, decrypt, and rewrap data using the transit engine all in one policy
- D. Nothing, as the minimum permissions to perform useful tasks are not present
Answer: C
Explanation:
The three policies that exist in Vault are:
admins: This policy grants full access to all secrets and operations in Vault. It can be used by administrators or operators who need to manage all aspects of Vault.
default: This policy grants access to all secrets and operations in Vault except for those that require specific policies. It can be used as a fallback policy when no other policy matches.
transit: This policy grants access only to the transit secrets engine, which handles cryptographic functions on data in-transit. It can be used by applications or services that need to encrypt or decrypt data using Vault.
These policies allow an organization to perform useful tasks such as:
Encrypting, decrypting, and rewrapping data using the transit engine all in one policy: This policy grants access to both the transit secrets engine and the default policy, which allows performing any operation on any secret in Vault.
Creating a transit encryption key for encrypting, decrypting, and rewrapping encrypted data: This policy grants access only to the transit secrets engine and its associated keys, which are used for encrypting and decrypting data in transit using AES-GCM with a 256-bit AES key or other supported key types.
Separating permissions allowed on actions associated with the transit secret engine: This policy grants access only to specific actions related to the transit secrets engine, such as creating keys or wrapping requests. It does not grant access to other operations or secrets in Vault.
NEW QUESTION # 26
Which of the following are replication methods available in Vault Enterprise? Choose two correct answers.
- A. Performance Replication
- B. Cluster sharding
- C. Disaster Recovery Replication
- D. Namespaces
Answer: A,C
Explanation:
The replication methods available in Vault Enterprise are performance replication and disaster recovery replication. These methods allow critical data to be replicated across clusters to support horizontally scaling and disaster recovery workloads.
Performance replication enables a primary cluster to replicate data to one or more secondary clusters, which can handle client requests and improve performance and availability. Performance replication replicates most Vault data, such as secrets, policies, auth methods, and leases, but not tokens. Performance secondaries generate their own tokens and leases, which are not replicated back to the primary. Performance replication also supports filtering, which allows selective replication of data based on namespaces or paths.
Disaster recovery replication enables a primary cluster to replicate data to one or more secondary clusters, which act as standby clusters in case of a failure or outage of the primary. Disaster recovery replication replicates all Vault data, including tokens and leases, and maintains the same configuration and state as the primary. Disaster recovery secondaries do not handle client requests, but they can be promoted to a primary in a disaster recovery scenario. Reference: Replication - Vault Enterprise | Vault | HashiCorp Developer, Performance Replication - Vault Enterprise | Vault | HashiCorp Developer, Disaster Recovery Replication - Vault Enterprise | Vault | HashiCorp Developer
NEW QUESTION # 27
Which of the following statements describe the CLI command below?
S vault login -method-1dap username-mitche11h
- A. You will be prompted to enter the password
- B. By default the generated token is valid for 24 hours
- C. Fails because the password is not provided
- D. Generates a token which is response wrapped
Answer: D
Explanation:
The CLI command vault login -method ldap username=mitchellh generates a token that is response wrapped. This means that the token contains a base64-encoded response wrapper, which is a JSON object that contains information about the token, such as its policies, metadata, and expiration time. The response wrapper is used to verify the authenticity and integrity of the token, and to prevent replay attacks. The response wrapper also allows Vault to automatically renew the token when it expires, or to revoke it if it is compromised. The -method ldap option specifies that the authentication method is LDAP, which requires a username and password to be provided. The username mitchellh is an example of an LDAP user name, and the password will be hidden when entered. Reference: Vault CLI Reference | Vault | HashiCorp Developer, Vault CLI Reference | Vault | HashiCorp Developer
NEW QUESTION # 28
Where do you define the Namespace to log into using the Vault Ul?
To answer this question
Use your mouse to click on the screenshot in the location described above. An arrow indicator will mark where you have clicked. Click the "Answer" button once you have positioned the arrow to answer the question. You may need to scroll down to see the entire screenshot.
Answer:
Explanation:
NEW QUESTION # 29
A user issues the following cURL command to encrypt data using the transit engine and the Vault AP:
Which payload.json file has the correct contents?
- A.
- B.
- C.
- D.
Answer: B
Explanation:
The payload.json file that has the correct contents is C. This file contains a JSON object with a single key, "plaintext", and a value that is the base64-encoded string of the data to be encrypted. This is the format that the Vault API expects for the transit encrypt endpoint1. The other files are not correct because they either have the wrong key name, the wrong value format, or the wrong JSON syntax.
Reference:
Encrypt Data - Transit Secrets Engine | Vault | HashiCorp Developer
NEW QUESTION # 30
Your organization has an initiative to reduce and ultimately remove the use of long lived X.509 certificates. Which secrets engine will best support this use case?
- A. Key/Value secrets engine version 2, with TTL defined
- B. PKI
- C. Cloud KMS
- D. Transit
Answer: B
Explanation:
The PKI secrets engine is designed to support the use case of reducing and ultimately removing the use of long lived X.509 certificates. The PKI secrets engine can generate dynamic X.509 certificates on demand, with short time-to-live (TTL) and automatic revocation. This eliminates the need for manual processes of generating, signing, and rotating certificates, and reduces the risk of certificate compromise or misuse. The PKI secrets engine can also act as a certificate authority (CA) or an intermediate CA, and can integrate with external CAs or CRLs. The PKI secrets engine can issue certificates for various purposes, such as TLS, SSH, code signing, email encryption, etc. Reference: https://developer.hashicorp.com/vault/docs/secrets/pki1, https://developer.hashicorp.com/vault/tutorials/getting-started/getting-started-dynamic-secrets
NEW QUESTION # 31
Which of these are a benefit of using the Vault Agent?
- A. Vault Agent will enforce minimum levels of encryption an application can use
- B. Vault Agent will auto-discover which authentication mechanism to use
- C. Vault Agent allows for centralized configuration of application secrets engines
- D. Vault Agent will manage the lifecycle of cached tokens and leases automatically
Answer: D
Explanation:
Vault Agent is a client daemon that provides the following features:
Auto-Auth - Automatically authenticate to Vault and manage the token renewal process for locally-retrieved dynamic secrets.
API Proxy - Allows Vault Agent to act as a proxy for Vault's API, optionally using (or forcing the use of) the Auto-Auth token.
Caching - Allows client-side caching of responses containing newly created tokens and responses containing leased secrets generated off of these newly created tokens. The agent also manages the renewals of the cached tokens and leases.
Templating - Allows rendering of user-supplied templates by Vault Agent, using the token generated by the Auto-Auth step.
Process Supervisor Mode - Runs a child process with Vault secrets injected as environment variables.
One of the benefits of using the Vault Agent is that it will manage the lifecycle of cached tokens and leases automatically. This means that the agent will handle the token renewal and revocation logic, as well as the lease renewal and revocation logic for the secrets that are cached by the agent. This reduces the burden on the application developers and operators, and ensures that the tokens and secrets are always valid and up-to-date. Reference: Vault Agent | Vault | HashiCorp Developer, Caching - Vault Agent | Vault | HashiCorp Developer
NEW QUESTION # 32
Use this screenshot to answer the question below:
When are you shown these options in the GUI?
- A. Enabling secret engines
- B. Enabling authentication engines
- C. Enabling policies
- D. Enabling authentication methods
Answer: D
Explanation:
This screenshot is shown when you are enabling authentication methods in the GUI. Authentication methods are the ways users and applications authenticate with Vault. Vault supports many different authentication methods, including username and password, GitHub, and more. You can enable one or more authentication methods from the grid of options, which are divided into three categories: Generic, Cloud, and Infra. Each option has a name, a description, and a logo. You can also enable authentication methods using the Vault CLI or API.
Enabling policies, authentication engines, and secret engines are different tasks that are not related to this screenshot. Policies are rules that govern the access to Vault resources, such as secrets, authentication methods, and audit devices. Authentication engines are components of Vault that perform authentication and assign policies to authenticated entities. Secret engines are components of Vault that store, generate, or encrypt data. These tasks have different GUI pages and options than the screenshot.
Reference:
[Authentication | Vault | HashiCorp Developer]
[Policies | Vault | HashiCorp Developer]
[Authentication | Vault | HashiCorp Developer]
[Secrets Engines | Vault | HashiCorp Developer]
NEW QUESTION # 33
You have a 2GB Base64 binary large object (blob) that needs to be encrypted. Which of the following best describes the transit secrets engine?
- A. A data key encrypts the blob locally, and the same key decrypts the blob locally.
- B. Vault will store the blob permanently. Be sure to run Vault on a compute optimized machine
- C. To process such a large blob. Vault will temporarily store it in the storage backend.
- D. The transit engine is not a good solution for binaries of this size.
Answer: D
Explanation:
The transit secrets engine is not a good solution for binaries of this size, because it is designed to handle cryptographic functions on data in-transit, not data at-rest. The transit secrets engine does not store any data sent to it, so it would require sending the entire 2GB blob to Vault for encryption or decryption, which would be inefficient and impractical. A better solution would be to use the transit secrets engine to generate a data key, which is a high-entropy key that can be used to encrypt or decrypt data locally. The data key can be returned in plaintext or wrapped by another key, depending on the use case. This way, the transit secrets engine only handles the encryption or decryption of the data key, not the data itself, and the data can be stored in any primary data store. Reference: Transit - Secrets Engines | Vault | HashiCorp Developer, Encryption as a service: transit secrets engine | Vault | HashiCorp Developer
NEW QUESTION # 34
Which statement describes the results of this command: $ vault secrets enable transit
- A. Requires a root token to execute the command successfully
- B. Enables the transit secrets engine at transit path
- C. Enables the transit secrets engine at secret path
- D. Fails because the transit secrets engine is enabled by default
- E. Fails due to missing -path parameter
Answer: B
Explanation:
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
NEW QUESTION # 35
As a best practice, the root token should be stored in which of the following ways?
- A. Should be revoked and never stored after initial setup
- B. Should be stored in configuration automation tooling
- C. Should be stored in another password safe
- D. Should be stored in Vault
Answer: A
Explanation:
The root token is the initial token created when initializing Vault. It has unlimited privileges and can perform any operation in Vault. As a best practice, the root token should be revoked and never stored after initial setup. This is because the root token is a single point of failure and a potential security risk if it is compromised or leaked. Instead of using the root token, Vault operators should create other tokens with appropriate policies and roles that allow them to perform their tasks. If a new root token is needed in an emergency, the vault operator generate-root command can be used to create one on-the-fly with the consent of a quorum of unseal key holders. Reference: Tokens | Vault | HashiCorp Developer, Generate root tokens using unseal keys | Vault | HashiCorp Developer
NEW QUESTION # 36
Which of the following vault lease operations uses a lease _ id as an argument? Choose two correct answers.
- A. describe
- B. revoke
- C. create
- D. revoke -prefix
- E. renew
Answer: B,E
Explanation:
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
NEW QUESTION # 37
How would you describe the value of using the Vault transit secrets engine?
- A. Vault has an API that can be programmatically consumed by applications
- B. The transit secrets engine ensures encryption in-transit and at-rest is enforced enterprise wide
- C. The transit secrets engine relieves the burden of proper encryption/decryption from application developers and pushes the burden onto the operators of Vault
- D. Encryption for application data is best handled by a storage system or database engine, while storing encryption keys in Vault
Answer: C
Explanation:
The transit secrets engine relieves the burden of proper encryption/decryption from application developers and pushes the burden onto the operators of Vault. The transit secrets engine provides encryption as a service, which means that it performs cryptographic operations on data in-transit without storing any data. This allows developers to delegate the responsibility of managing encryption keys and algorithms to Vault operators, who can define and enforce policies on the transit secrets engine. This way, developers can focus on their application logic and data, while Vault handles the encryption and decryption of data in a secure and scalable manner. Reference: Transit - Secrets Engines | Vault | HashiCorp Developer, Encryption as a service: transit secrets engine | Vault | HashiCorp Developer
NEW QUESTION # 38
Which of the following statements are true about Vault policies? Choose two correct answers.
- A. You must use YAML to define policies
- B. The default policy can not be modified
- C. Vault must be restarted in order for a policy change to take an effect
- D. Policies deny by default (empty policy grants no permission)
- E. Policies provide a declarative way to grant or forbid access to certain paths and operations in Vault
Answer: D,E
Explanation:
Vault policies are written in HCL or JSON format and are attached to tokens or roles by name. Policies define the permissions and restrictions for accessing and performing operations on certain paths and secrets in Vault. Policies are deny by default, which means that an empty policy grants no permission in the system, and any request that is not explicitly allowed by a policy is implicitly denied1. Some of the features and benefits of Vault policies are:
Policies are path-based, which means that they match the request path to a set of rules that specify the allowed or denied capabilities, such as create, read, update, delete, list, sudo, etc2.
Policies are additive, which means that if a token or a role has multiple policies attached, the effective policy is the union of all the individual policies. The most permissive capability is granted if there is a conflict3.
Policies can use glob patterns, such as * and +, to match multiple paths or segments with a single rule. For example, path "secret/*" matches any path starting with secret/, and path "secret/+/config" matches any path with two segments after secret/ and ending with config4.
Policies can use templating to interpolate certain values into the rules, such as identity information, time, randomness, etc. For example, path "secret/{{identity.entity.id}}/*" matches any path starting with secret/ followed by the entity ID of the requester5.
Policies can be managed by using the vault policy commands or the sys/policy API endpoints. You can write, read, list, and delete policies by using these interfaces6.
The default policy is a built-in policy that is attached to all tokens by default and cannot be deleted. However, the default policy can be modified by using the vault policy write command or the sys/policy API endpoint. The default policy provides common permissions for tokens, such as renewing themselves, looking up their own information, creating and managing response-wrapping tokens, etc7.
You do not have to use YAML to define policies, as Vault supports both HCL and JSON formats. HCL is a human-friendly configuration language that is also JSON compatible, which means that JSON can be used as a valid input for policies as well8.
Vault does not need to be restarted in order for a policy change to take effect, as policies are stored and evaluated in memory. Any change to a policy is immediately reflected in the system, and any token or role that has that policy attached will be affected by the change.
NEW QUESTION # 39
You can build a high availability Vault cluster with any storage backend.
- A. False
- B. True
Answer: A
Explanation:
Not all storage backends support high availability mode for Vault. Only the storage backends that support locking can enable Vault to run in a multi-server mode where one server is active and the others are standby. Some examples of storage backends that support high availability mode are Consul, Integrated Storage, and ZooKeeper. Some examples of storage backends that do not support high availability mode are Filesystem, MySQL, and PostgreSQL. Reference: https://developer.hashicorp.com/vault/docs/concepts/ha1, https://developer.hashicorp.com/vault/docs/configuration/storage2
NEW QUESTION # 40
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
Answer: A,D
Explanation:
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
NEW QUESTION # 41
When an auth method is disabled all users authenticated via that method lose access.
- A. True
- B. False
Answer: A
Explanation:
The statement is true. When an auth method is disabled, all users authenticated via that method lose access. This is because the tokens issued by the auth method are automatically revoked when the auth method is disabled. This prevents the users from performing any operation in Vault using the revoked tokens. To regain access, the users have to authenticate again using a different auth method that is enabled and has the appropriate policies attached. Reference: Auth Methods | Vault | HashiCorp Developer, auth disable - Command | Vault | HashiCorp Developer
NEW QUESTION # 42
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