Vskills Flashcards

Which of the subsequent is not a primary target for virtualization?

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.

Which cloud computing feature of the service delivery model is essential for a public cloud?

Answer: Metering

Explanation: 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.

If a server crashes due to a hardware issue, what happens to the virtual machines that are kept there?

Answer: They can be migrated to another server

Explanation: 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.

Which network technique enables communication between hosts that are not physically close to one another?

Answer: Virtual Local Area Network

Explanation: The network technology that allows physically separated hosts to communicate as if in the same broadcast domain is a Virtual Local Area Network (VLAN).

Which of the following is not a flavor included in the OpenStack default installation?

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.

In a cloud environment, which network and SAN administration strategy will change?

Answer: Server, hypervisor, network, and SAN architecture will converge and centrally managed

Explanation: 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.

What feature of the cloud allows customers to pay for the services they use as they go?

Answer: Usage-based billing

Explanation: The cloud characteristic you are referring to is known as "usage-based billing." 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.