What is the primary purpose of resizing a virtual machine instance in OpenStack?

To change the operating system of the instance

To change the instance's flavor, adjusting its CPU, memory, and disk resources

To attach additional storage volumes to the instance

To move the instance to a different availability zone

What is the purpose of a floating IP address in OpenStack?

To enable SSH key-based authentication

To increase the instance's network bandwidth

To assign a static private IP address to an instance

To provide a public, externally reachable IP address for an instance

What is the primary purpose of creating a snapshot of a virtual machine instance in OpenStack?

To change the instance's network configuration

To increase the instance's CPU and memory resources

To migrate the instance to a different host

To capture the instance's current state for backup and recovery

A VM in OpenStack is not reachable via SSH, and the console log shows repeated 'connection refused' errors from the SSH service. The VM's security group allows inbound SSH, and the floating IP is correctly associated. The administrator suspects the SSH service is not running. Which diagnostic step should be taken to confirm this?

Reboot the VM to restart the SSH service.

Ping the floating IP to check connectivity.

Use the VNC console to log in locally and check the status of the SSH service.

Check the security group rules again to ensure SSH is allowed.

Juniper NetworksCertified Associate, Cloud

Domain 5Objective 1

Creating and Managing VMs in OpenStack JN0-214 Practice Questions (Page 1)

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 1–5

1foundation · easy
What is the primary purpose of resizing a virtual machine instance in OpenStack?
Select an answer first
2foundation · easy
Which protocol is commonly used to access the console of a virtual machine instance in OpenStack?
Select an answer first
3foundation · easy
What is the purpose of a floating IP address in OpenStack?
Select an answer first
4foundation · easy
What is the primary purpose of creating a snapshot of a virtual machine instance in OpenStack?
Select an answer first
5expert · hard
A VM in OpenStack is not reachable via SSH, and the console log shows repeated 'connection refused' errors from the SSH service. The VM's security group allows inbound SSH, and the floating IP is correctly associated. The administrator suspects the SSH service is not running. Which diagnostic step should be taken to confirm this?
Select an answer first

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Creating and Managing VMs in OpenStack JN0-214 Practice Questions (Page 1)

Questions 1–5

What is the primary purpose of resizing a virtual machine instance in OpenStack?

Which protocol is commonly used to access the console of a virtual machine instance in OpenStack?

What is the purpose of a floating IP address in OpenStack?

What is the primary purpose of creating a snapshot of a virtual machine instance in OpenStack?

Keep studying — Cloud Orchestration with OpenStack