Why is specifying the --advertise-addr option important when initializing a swarm on a multi-interface host?

hard📝 Conceptual Q10 of 15

Docker - Swarm

Why is specifying the --advertise-addr option important when initializing a swarm on a multi-interface host?

AIt speeds up swarm initialization

BIt disables all other network interfaces

CIt tells other nodes which IP to use to communicate with this manager

DIt automatically configures firewall rules

Step-by-Step Solution

Solution:

Step 1: Understand advertise address role
The advertise address is the IP other swarm nodes use to reach this manager.
Step 2: Evaluate other options
It does not disable interfaces, configure firewall, or affect speed.
Final Answer:
It tells other nodes which IP to use to communicate with this manager -> Option C
Quick Check:
Advertise address = communication IP [OK]

Quick Trick: Advertise address guides node communication [OK]

Common Mistakes:

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