Question 19

Correct answer: A

A.

In this solution, the Ansible playbook is structured to apply specific roles to different network devices based on their inventory group. In the inventory.ini file, network devices are grouped into [routers] and [switches] groups. Each device in these groups is associated with a specific role. In the playbook, the routers group will apply the configure_router_role, while the switches group will apply the configure_switch_role. This ensures that the correct configuration role is applied to each device type (router or switch) based on the group it belongs to in the inventory, allowing for efficient management of network devices.

Line-by-Line Explanation

1. [routers]

   • Defines the routers group in the inventory. This group will include all the routers that need to be configured.

2. router1 ansible_host=192.168.1.1

   • Specifies that router1 is part of the routers group, and it has the IP address 192.168.1.1. Ansible will use this IP to connect to the router.

3. [switches]

   • Defines the switches group in the inventory. This group will include all the switches that need to be configured.

4. switch1 ansible_host=192.168.1.2

   • Specifies that switch1 is part of the switches group, and it has the IP address 192.168.1.2. Ansible will use this IP to connect to the switch.

5. - hosts: routers

   • In the playbook, this line indicates that the following task will be executed on all hosts in the routers group.

6. roles:

   • Introduces the list of roles to be applied to the hosts in the routers group.

7. - configure_router_role

   • Specifies the role to be applied to the devices in the routers group. In this case, it is the configure_router_role, which contains tasks for configuring routers.

8. - hosts: switches

   • In the playbook, this line indicates that the following task will be executed on all hosts in the switches group.

9. roles:

   • Introduces the list of roles to be applied to the hosts in the switches group.

10. - configure_switch_role

    • Specifies the role to be applied to the devices in the switches group. In this case, it is the configure_switch_role, which contains tasks for configuring switches.

This method ensures that the correct role is applied to each device type (router or switch), based on the inventory group the device belongs to. It makes managing different network devices efficient by applying group-specific roles for configuration.