VMware Interview Questions And Answers With Verified Solutions

VMware Interview Questions And Answers With Verified Solutions 1. What is virtualization? ANS Virtualization is the creation of a virtual (rather than actual) version of something, such as an operating system, a server, a storage device or network resources. 2. What is a Hypervisor? ANS It is a program that allows multiple operating systems to share a single hardware host. Each operating system appears to have the host's processor, memory, and other resources all to itself. However, the hypervisor is actually controlling the host processor and resources, allocating what is needed to each operating system in turn and making sure that the guest operating systems (called virtual machines) cannot disrupt each other 3. What is the difference between Esx and Esxi? ANS ESX (Elastic Sky X) is the VMware's flagship enterprise server virtualization platform. In ESX, VMkernel is the virtualization kernel which is managed by a console operating system which is also called as Service console. Which is linux based and its main purpose is it to provide a Management interface for the host and lot of management agents and other thrid party software agents are installed on the service console to provide the functionalists like hardware management and monitoring of ESX hypervisor. ESXi (Elastic sky X Integrated) is also the VMware's flagship enterprise server virtualization platform. In ESXi, Service console is removed. All the VMware related agents and third party agents such as management and monitoring agents can also run directly on the VMkernel. ESXi is ultra-thin architecture which is highly reliable and its small code-base allows it to be more secure with less codes to patch. ESXi uses Direct Console User Interface (DCUI) instead of a service console to perform management of ESXi server. ESXi installation will happen very quickly as compared to ESX installation. ESX 4.1 is the last version availability of ESX server. After vSphere 5, only ESXi is available.