COA OpenStack Heat & Orchestration 2

Question 1

What is a Heat environment file used for?

Accepted Answer

Overriding template parameters and resource registrations without modifying the template

Answer

Setting OS-level environment variables on compute instances

Answer

Configuring the Heat API service endpoints

Answer

Defining the OpenStack region for stack deployment

Question 2

Which intrinsic function in HOT is used to reference the value of a parameter defined in the same template?

Accepted Answer

get_param

Answer

get_resource

Answer

get_attr

Answer

str_replace

Question 3

What does the 'get_resource' intrinsic function return in a HOT template?

Accepted Answer

The UUID or name identifier of a resource defined in the template

Answer

The current status of a resource being created

Answer

An attribute value from a resource in a different stack

Answer

The resource quota remaining in the current project

Question 4

Which command lists all stacks in the current project along with their status?

Accepted Answer

openstack stack list

Answer

openstack stack show

Answer

openstack heat list

Answer

openstack resource list

Question 5

What happens to resources in a Heat stack when the stack is deleted?

Accepted Answer

All resources defined in the stack are deleted by default

Answer

Resources are moved to a suspended state and retained for 30 days

Answer

Resources are preserved but removed from Heat management

Answer

Deletion only removes the stack record; resources remain running

Question 6

What is a 'nested stack' in Heat orchestration?

Accepted Answer

A stack referenced as a resource within another template, enabling modular design

Answer

A stack deployed inside a virtual machine

Answer

Multiple stacks sharing the same network resources

Answer

A stack created automatically by Heat autoscaling

Question 7

Which Heat resource type is used to create an OpenStack Nova compute instance?

Accepted Answer

OS::Nova::Server

Answer

OS::Nova::Instance

Answer

OS::Compute::VM

Answer

OS::Nova::Compute