Question 1

Stephen is using Consul for service discovery, but he also wants to store data in the Consul K/V for application variables that need to be retrieved at runtime. However,

the application is currently architected to read data directly from a local file, not from a remote K/V service like Consul.

What Consul feature can Stephen use to retrieve data from Consul without re-architecting the application?

Options :

A : consul-template

B :

API

C : consul watch

D : envconsul

Answer: A

Question 2

True or False? A service definition can include multiple health checks.

Options :

A : false

B : true

Answer: B

Question 3

You have created a new gossip encryption key using consul keygen and installed it using the command consul keyring -install

TX/1dsj67x/4XdTeSG1Cb5RdC/cbAbv9Hch4H8cL8nk=.

However, when you try and delete the original gossip encryption key, you receive an error. Based on the error message below, what steps need to be taken in order to be

able to remove the old gossip encryption key?

1. $ consul keyring -remove /d+jMNoQWICjMvddXJXzyGPDWiEOFgApvUJcuPRcves=

2.

3. ==> Removing gossip encryption key...

4. error: Unexpected response code: 500 (12 errors occurred:

5. * WAN error: 5/5 nodes reported failure

6. * CONSUL-NODE-A.dc-1: Removing the primary key is not allowed

7. * CONSUL-NODE-C.dc-1: Removing the primary key is not allowed

8. * CONSUL-NODE-B.dc-1: Removing the primary key is not allowed

9. * CONSUL-NODE-D.dc-1: Removing the primary key is not allowed

10. * CONSUL-NODE-E.dc-1: Removing the primary key is not allowed

11. * dc-1 (LAN) error: 5/5 nodes reported failure

12. * CONSUL-NODE-E: Removing the primary key is not allowed

13. * CONSUL-NODE-A: Removing the primary key is not allowed

14. * CONSUL-NODE-D: Removing the primary key is not allowed

15. * CONSUL-NODE-B: Removing the primary key is not allowed

16. * CONSUL-NODE-C: Removing the primary key is not allowed

Options :

A :

wait until the old key is invalidated by Consul based upon the configured validity date

B : configure Consul to use the new key using the consul keyring -use command

C :

the original gossip key on a Consul cluster cannot be deleted

D : wait for Raft to replicate the new key across all cluster nodes before you can remove it

Answer: A

Question 4

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 5

Which of the following are valid Consul watch types that you can use to monitor updates in Consul? (select five)

Options :

A : keyprefix

B : service

C : services

D : login

E : nodes

F : alarm

G : key

Answer: A,B,C

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