Free OpenStack Vskills Questions and Answers — Questions and Answers
Question 1: Which of the subsequent is not a primary target for virtualization?
- Increased use of hardware resources
- Reduced management and resources costs
- Improved business flexibility
- Lowering IT management costs (Correct answer)
Correct answer: Lowering IT management costs
Virtualization's primary goals are increasing hardware resource utilization, reducing management and resource costs, and improving business flexibility, so 'Lowering IT management costs' is the option singled out as not a primary target as worded here. The other three align directly with virtualization's core efficiency objectives.
Question 2: Which cloud computing feature of the service delivery model is essential for a public cloud?
- Metering (Correct answer)
- Scalability
- Multi-tenancy
- Rapid provisioning
Correct answer: Metering
Explanation: <br> Metering is not a must-have attribute for a public cloud. The key service delivery model attribute that is a must for a public cloud is "multi-tenancy." Public clouds are designed to serve multiple customers (tenants) simultaneously by sharing the underlying computing resources. Multi-tenancy allows for cost-effective resource utilization and scalability, as the resources are shared among multiple users or organizations.
Question 3: If a server crashes due to a hardware issue, what happens to the virtual machines that are kept there?
- None of these
- They are always accessible
- They can be migrated to another server (Correct answer)
- They are not able to be recovered
Correct answer: They can be migrated to another server
Explanation: <br> If a server fails due to a hardware fault in a virtualized environment, the virtual machines (VMs) stored on that server can typically be migrated to another server. This process is known as VM migration or VM failover.
Question 4: Which network technique enables communication between hosts that are not physically close to one another?
- Virtual Local Area Network (Correct answer)
- Network Address Translation
- IP Virtualization
- IP Masquerading
Correct answer: Virtual Local Area Network
Explanation: <br> The network technology that allows physically separated hosts to communicate as if in the same broadcast domain is a Virtual Local Area Network (VLAN).
Question 5: Which of the following is not a flavor included in the OpenStack default installation?
- Large
- Tiny
- Small
- None of these (Correct answer)
Correct answer: None of these
OpenStack's default installation ships with a standard set of flavors—Tiny, Small, Medium, Large, and XLarge—so Tiny, Small, and Large are all included. Since every listed option is actually part of the default flavor catalog, none of them is the missing one, making 'None of these' correct.
Question 6: In a cloud environment, which network and SAN administration strategy will change?
- Network and SAN architecture will converge and centrally managed
- No change
- Server, hypervisor, network, and SAN architecture will converge and centrally managed (Correct answer)
- Server, hypervisor, and SAN architecture will converge and centrally managed
Correct answer: Server, hypervisor, network, and SAN architecture will converge and centrally managed
Explanation: <br> In a cloud infrastructure, the network and storage area network (SAN) administration approaches undergo significant changes. Specifically, the server, hypervisor, network, and SAN architectures converge and are centrally managed in a cloud environment.
Question 7: What feature of the cloud allows customers to pay for the services they use as they go?
- Self-service access
- Service elasticity
- Service-based pricing
- Usage-based billing (Correct answer)
Correct answer: Usage-based billing
Explanation: <br> The cloud characteristic you are referring to is known as "usage-based billing."<br> <br> Usage-based billing is a pricing model in which users are charged based on the amount of cloud resources or services they consume. Instead of a fixed subscription fee, users pay for the specific resources they use or the services they consume within a given period.
Free OpenStack Vskills Questions and Answers
Which of the subsequent is not a primary target for virtualization?