vmware admin interview questions - Wikitechy

Comparison between vsphere versions ?

Editor — Sun, 18 Jul 2021 21:58:20 +0000

vSphere 6.0 released compared as previous versions of vSphere 5.0 instead of most advanced features and improvements available.
The difference between vSphere 5.0, 5.1, 5.5 and vSphere 6.0,

Editor — Sun, 18 Jul 2021 21:53:07 +0000

The most important components in the vSphere product suite are

ESXi – is a type 1 hypervisor. A hypervisor is a part of software that creates and runs virtual machines. In vSphere, virtual machines are installed on ESXi servers.
vCenter Server – is a centralized management platform and framework that lets you manage virtual machines and ESXi hosts centrally.
vSphere Update Manager – An add-on package for vCenter Server that helps you keep your ESXi hosts and VMs patched with the latest updates.
vSphere Web Client – is a web-based user interface used for handling a virtual infrastructure.
vSphere Client – Windows application a locally installed with a graphical user interface (GUI) everyday handling tasks and virtual infrastructure to be advanced configuration.

Editor — Sun, 18 Jul 2021 21:48:41 +0000

Hypervisor is a program the multiple operating systems to share a single hardware host.
The host’s processor, memory and other resource by each operating system.
Each operating system has the resource, host’s processor and required allocating controls by Hypervisor. Guest operating system and OS cannot be disturbed each other.
The host machine hardware allows to work one or more virtual machines as guests has independently, the multiple guest VMs allowing to share the system’s physical compute resources, processor cycles, memory space, network bandwidth by effectively.
A hypervisor is another name called as virtual machine monitor.

Editor — Sun, 18 Jul 2021 21:45:50 +0000

It is the Web-based application that connects users to the vCenter Server to manage installations and handle inventory objects in a vSphere environment.
An object navigator, the main workspace, and the tasks and alarms panel is the features of graphical user interface (GUI) presents by the Web Client.
Through this GUI, the objects listed in the virtualized data center can be manage and supervise by the vSphere administrator.
Java server comprised the Web Client and an application based on Adobe Flex that runs in a browser.
VCenter Server through a Web browser access by user using vSphere Web Client.
The intermediate communication between the browser and the vCenter Server by using VMware API in vSphere Web Client.

Editor — Sun, 18 Jul 2021 21:41:20 +0000

VSphere DRS (Distributed Resource Scheduler) is a utility an available resources in a virtualized environment. While computing the workload should be balanced.
The utility is one of the part in virtualization suite called as VMware Infrastructure 3.
It is an often used in conjunction with vSphere HA to rebalance workloads that must be restarted on alternate hosts.
An organization uses vSphere DRS and vSphere HA combine together then restarted the VMs do not affect the performance of other VMs on the failover host.
vSphere DRS can migrate VMs from overutilized ESXi hosts to underutilized hosts while DRS become an unbalanced.
Using vMotion in a vSphere DRS performs migrations of VMs across hosts in the cluster without any downtime.

Editor — Sun, 18 Jul 2021 21:31:34 +0000

VMware vSphere HA (High Availability) is a utility on alternative host servers to reduce application downtime. While VMware’s vSphere software that can restart failed in virtual machines (VMs).
Server administrator enables by vSphere HA to pool physical servers on the same network into a logical group called a high availability cluster.
System crash, power interruption or network failure server failure will occur. VSphere HA detects which VMs are down and restarts them on another stable system within the cluster.
Workloads will failed while restarting on secondary systems is called failover.