Which of the following is the correct syntax to create a service with 3 replicas and publish port 80 to 8080?

easy📝 Syntax Q12 of 15

Docker - Swarm

Adocker service create --replicas 3 --publish 8080:80 myimage

Bdocker service create --publish 3 --replicas 80:8080 myimage

Cdocker service create --replicas=3 --publish=80:8080 myimage

Ddocker service create --replicas 3 --publish 80:8080 myimage

Step-by-Step Solution

Solution:

Step 1: Check correct option format for replicas and publish
The correct syntax uses --replicas 3 and --publish 8080:80 to map port 8080 on the host to port 80 in the container.
Step 2: Validate port mapping order and syntax
Port mapping is hostPort:containerPort, so 8080:80 is correct. Options B, C, and D have wrong order or syntax.
Final Answer:
docker service create --replicas 3 --publish 8080:80 myimage -> Option A
Quick Check:
Replicas and publish flags syntax = docker service create --replicas 3 --publish 8080:80 myimage [OK]

Quick Trick: Use --replicas N and --publish hostPort:containerPort [OK]

Common Mistakes:

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