What is VMware Virtual Machine File System (VMFS)?

VMware - Quiz(MCQ)

A computer program that provides services to other programs and their users

A series of points or nodes interconnected by communication paths

A group of terminals or workstations attached to a common control unit

A cluster file system that enables storage virtualization for multiple ESX Server installations

Correct Answer : A cluster file system that enables storage virtualization for multiple ESX Server installations

Explanation : VMFS is VMware's file system built specifically for virtualization. The file system is perhaps less well-known than Windows' NTFS and Linux's ext3, but it enables advanced features in a VMware vSphere environment.

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VMware memory overcommit

A secure site where data communications media converge and are interconnected

An allocation method that moves unused memory shares from VMs to other VMs

A hardware device that contains multiple tape drives, access ports for tapes and a robotic device for mounting cartridges

A way to fit more data on a storage medium by analyzing the data for unique repetitive patterns that can be stored as shorter symbols

Correct Answer : An allocation method that moves unused memory shares from VMs to other VMs

Explanation : Hypervisors allow VMs to use more memory space than the physical host has available. For example, four 1 GB VMs can share a 2 GB host server. VMware enables memory overcommitment with Idle Memory Tax, which assigns a higher value to unused memory shares on a host.

VMware Distributed Resource Scheduler (DRS)

Balances virtualized computing workloads with available resources

Partitions a physical server into multiple VMs

Pools network and storage resources for test and development

Centralizes and optimizes data center resources and desktop management

Correct Answer : Balances virtualized computing workloads with available resources

Explanation : DRS allows IT shops to conserve server resources and maintain performance in line with user demand. Storage DRS uses VMware's Storage vMotion technology to automatically load balance disks.

What is VMware HA (High Availability)?

A bare-bones installation option for computers running the Windows Server 2008 OS

A measure of how much traffic a particular query server is handling at a given time.

An organizational management approach to improve product and services quality in response to feedback

A utility that relaunches VMs after server failure without dedicated standby hardware and software

Correct Answer : A utility that relaunches VMs after server failure without dedicated standby hardware and software

Explanation : VMware HA maintains important but non-mission-critical VMs, ensuring high uptime and minimal disruptions in the event of a host failure. In addition to making several major HA changes in its vSphere 5 release, VMware is planning a new HA design in 2013: Virtual Machine Component Protection.