Consul 1.15 Service Discovery Practice Question
When multiple agents are in a cluster, how does Consul ensure that service discovery information is consistent across all nodes?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Via the Raft consensus protocol for catalog changes.
The Gossip Protocol (serf) and Raft consensus maintain state across nodes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Using a centralized database like PostgreSQL.
Why it's wrong here
Consul is self-contained.
- ✗
By polling the leader every second.
Why it's wrong here
Polling is not the primary mechanism.
- ✓
Via the Raft consensus protocol for catalog changes.
Why this is correct
Raft ensures a consistent replicated state machine for the catalog.
- ✗
By broadcasting all service updates to every node.
Why it's wrong here
Gossip is efficient, not a broadcast of every detail.
About these practice questions
This Consul 1.15 question is part of Courseiva's 194-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official HashiCorp exam blueprint
This Consul 1.15 practice question is part of Courseiva's free HashiCorp certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the Consul 1.15 exam.