An administrator is deploying a fleet of identical web server VMs in OpenStack. Each VM needs to know its own hostname and the IP address of a shared database server. The administrator wants to pass this information at boot time without baking it into the image. What is the most efficient way to achieve this?

Use a DHCP server to assign hostnames and rely on DNS for the database IP.

Pass the hostname and database IP as metadata (--property) and the database IP also in user data (cloud-init) for each instance.

Pass the hostname as user data and the database IP as metadata for each instance.

Create a separate image for each VM with the hostname and database IP baked in.

An administrator has created a VM in OpenStack that is only reachable from within the private tenant network. The VM needs to be accessible from the public internet. The administrator has already created a floating IP and added a security group rule allowing SSH (port 22). What is the next step to make the VM publicly accessible?

Associate the floating IP to the VM's port using 'openstack server add floating ip '.

Create a new security group rule allowing all traffic from 0.0.0.0/0.

Add a route in the tenant router to the public network.

Reboot the VM to apply the security group changes.

What is the primary function of a security group in OpenStack?

To define storage quotas for instances

To filter inbound and outbound network traffic for instances

To group instances for load balancing

To manage SSH key pairs for instances

Juniper NetworksCertified Associate, Cloud

Domain 5Objective 1

Creating and Managing VMs in OpenStack JN0-214 Practice Questions (Page 3)

Part of the Cloud Orchestration with OpenStack domain, which makes up ~14% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~5–8 in this domain), expect 1–2 from this objective — we provide 27 practice questions to prepare you well beyond it. (estimate)

27questions here

6free pages

10concepts

Questions 11–15

11foundation · easy
Which OpenStack CLI command is used to resize a virtual machine instance to a different flavor?
Select an answer first
12application · medium
An administrator is deploying a fleet of identical web server VMs in OpenStack. Each VM needs to know its own hostname and the IP address of a shared database server. The administrator wants to pass this information at boot time without baking it into the image. What is the most efficient way to achieve this?
Select an answer first
13application · medium
An administrator has created a VM in OpenStack that is only reachable from within the private tenant network. The VM needs to be accessible from the public internet. The administrator has already created a floating IP and added a security group rule allowing SSH (port 22). What is the next step to make the VM publicly accessible?
Select an answer first
14foundation · easy
What is the primary function of a security group in OpenStack?
Select an answer first
15foundation · easy
Which OpenStack CLI command permanently removes a virtual machine instance?
Select an answer first

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Creating and Managing VMs in OpenStack JN0-214 Practice Questions (Page 3)

Questions 11–15

Which OpenStack CLI command is used to resize a virtual machine instance to a different flavor?

What is the primary function of a security group in OpenStack?

Which OpenStack CLI command permanently removes a virtual machine instance?

Keep studying — Cloud Orchestration with OpenStack