Free VCA vSphere Networking & Storage Management Questions and Answers

Question 1

What is the purpose of vSphere Standard Switch (vSS)?

Accepted Answer

To create a virtual network between virtual machines and physical adapters.

Answer

A vSphere Standard Switch (vSS) acts as a software-defined network device configured on a single ESXi host. It connects virtual machines to each other and to the physical network adapters (NICs) of the host, allowing them to communicate with external networks. It provides basic network connectivity and traffic management for VMs on that specific host.

Question 2

What is the function of a vSphere Distributed Switch (vDS)?

Accepted Answer

To provide centralized network management across multiple ESXi hosts.

Answer

A vSphere Distributed Switch (vDS) extends network management capabilities across multiple ESXi hosts from a central point, vCenter Server. It ensures consistent network configuration, policies, and monitoring for all connected virtual machines and hosts in a datacenter. This simplifies network administration and enhances scalability.

Question 3

What is the role of Storage DRS (Distributed Resource Scheduler)?

Accepted Answer

To balance storage workloads and optimize resource utilization.

Answer

Storage DRS (SDRS) is designed to optimize storage resource utilization and performance within a datastore cluster. It monitors I/O latency and free space, then automatically recommends or performs migrations of virtual machine disk files (VMDKs) to balance the load and prevent hotspots. This ensures efficient use of storage and consistent VM performance.

Question 4

What does vSphere vMotion enable?

Accepted Answer

It allows live migration of virtual machines across hosts with no downtime.

Answer

vSphere vMotion is a key feature that enables the live migration of a running virtual machine from one physical ESXi host to another without any interruption to service. This allows for continuous operation during planned maintenance, hardware upgrades, or resource balancing activities. It ensures zero downtime for critical applications.

Question 5

What is a key feature of vSphere Storage I/O Control (SIOC)?

Accepted Answer

It controls I/O throughput to datastores and prioritizes virtual machine access.

Answer

vSphere Storage I/O Control (SIOC) monitors the I/O load on datastores and dynamically allocates I/O resources based on shares assigned to virtual machines. This ensures that critical virtual machines receive their fair share of I/O bandwidth, preventing performance degradation caused by 'noisy neighbors' on shared storage. It helps maintain consistent application performance.

VCA - VCA-DCV VMware Certified Associate on vSphere Practice Test

VCA - VCA-DCV VMware Certified Associate on vSphere Practice Test

Free VCA vSphere Networking & Storage Management Questions and Answers