Question 1

Which of the following is responsible for managing membership and broadcasting messages to the cluster?

Options :

A : Raft (Paxos)

B : Discovery chain

C : Serf (SWIM)

D : Prepared Queries

Answer: C

Question 2

Scenario: You have an application that uses Consul service discovery to connect to backend services in order to process data submitted by end-users. The front-end web

service consists of 3 containers, while the backend service consists of 5 static virtual machines. All of the front-end web servers and the backend servers are registered

with Consul.

During normal operations, a user complains that the data processing is taking too long. To troubleshoot, you run a DNS query against the DNS name for the backend

service, but discover that the response only contains three of the virtual machines. Why would Consul only respond with three servers rather than all five?

Options :

A :

the response only included the three underutilized nodes

B :

the DNS query must specify how many nodes to return in the response

C : the health check is failing for the other two servers

D : Consul has a maximum response of three nodes in a given DNS query

Answer: C

Question 3

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 4

Complete the sentence:

The main restriction on Consul's K/V store is an object's size, which can be a maximum of _______?

Options :

A : 512KB

B : 8KB

C : 64KB

D : 1MB

Answer: A

Question 5

True or False? A prepared query can be used to assist with service failover between multiple federated Consul datacenters.

Options :

A : false

B : true

Answer: B