Question 1

What command can be used for new Consul agents to become a member of an existing cluster?

Options :

A : consul join

B : consul cluster -join

C : consul exec -join

D : consul connect

Answer: A

Question 2

Complete the sentence using the correct answer below:

When authentication is enabled, a Consul token should be provided to make API requests using the ___________ or ___________ header

Options :

A : X-Consul-Token

B :

ACL_Token

C : Consul_Token

D :

Token

E : Authorization: Bearer

Answer: A

Question 3

Scenario: You are storing configuration settings for your application in Consul's K/V store, and each setting is critical to the successful implementation of the application.

A developer recently updated the value for app1, causing the deployment to fail.

What Consul feature can be used to monitor the K/V store for updates and automatically take action to remediate the issue?

Options :

A : set up an ACL to automatically restart the Consul service when a value is changed

B :

configure a watch and execute a script to update the application

C : set up health checks to monitor for changes to the K/V store

D : use the raft consensus protocol to replicate the changes from the other nodes when a value is changed

Answer: A

Question 4

What are two ways that a client or service can programmatically discover healthy nodes for a service registered in a local Consul cluster? (select two)

Options :

A : DNS

B : User Interface (UI)

C : HTTP API

D : federation

Answer: A,C

Question 5

You have two Consul datacenters and you want to enable federation so services in dc1 can discover services in dc2. You run the consul join wan node2.example.com.

However, servers in dc1 can not communicate with servers in dc2 and vice versa. Based on the snippets of the server configuration files can be found below, why would

this be assuming network connectivity is working as expected?

dc1 configuration

1. "datacenter": "dc1",

2. "server": true,

3. "key_file": "/etc/consul.d/cert.key",

4. "cert_file": "/etc/consul.d/client.pem",

5. "ca_file": "/etc/consul.d/chain.pem",

6. "verify_incoming": true,

7. "verify_outgoing": true,

8. "verify_server_hostname": true,

9. "ui": true,

10. "encrypt": "XIUEktl3YjG9KPJfaBU1xE69IZ0XhsNCSH423FyknJE=",

11. "bootstrap_expect": 5,

12. "enable_syslog": true,

dc2 configuration

1. "datacenter": "dc2",

2. "server": true,

3. "key_file": "/etc/consul.d/cert.key",

4. "cert_file": "/etc/consul.d/client.pem",

5. "ca_file": "/etc/consul.d/chain.pem",

6. "verify_incoming": true,

7. "verify_outgoing": true,

8. "verify_server_hostname": true,

9. "ui": true,

10. "encrypt": "LSBSOZI5+9EX/kdY8u27mX50rk1ywcprfUCoSZjnpUg=",

11. "bootstrap_expect": 5,

12. "enable_syslog": false,

Options :

A : the gossip keys need to match between federated datacenters

B : the verify_incoming setting should be set to false before WAN federation can be configured

C : the client certificates are issued from different CAs

D : the syslog configurations do not match

Answer: A

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