Basic Interview Questions :
What is Virtualization?
What are the Ways of acessing a an ESX host ?
How can Server Virtualization help us?
Difference between Virtualization Management Layer approch and Dedicated Virtualization?
Diffrence between Vmware ESX/ESXi ?
What is Memory Balloning ?
Type of File system that ESX uses ?
Which version of VI client is used to acess 3.5 and 4.0 ESX host ?
If you want to change the configuration of a VM maually which File do you edit ?
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Explain how VMKernal , Service Console and VM traffic are handled in your pervious company before ?
What is Vlan Port Trunk ?
What is NIC teaming ?
WHat are the commands used to configure a NIC card through ESX Console ?
Diffrent type of Vnics avalible in ESX 3.5 Environment ?
Explain SVmotion and Vmotion ?
Explain me VMHA ? and how it works and where can you find the Logs for HA?
Differences between ESX 3.5 and ESX 4.0 ENVironment ?
What are the benefits of installing VMtools ?
What is a status Bar in Vcenter ?
How do you search for an IP in the Vcenter ?
What is an OVF template ?
What is a plugin ?
What is a VM kernal ?
What is guided consolidation and why is it used ?
Diffrence between SAN and NAS ?
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Suppouse you have two Vcenters and you want to migrate VM's from one Vcenter to Another ?
Which of the following vCenter tasks does a virtual Machine user have permissions to do by default ? Create a task
Which of the following services are provided by the service console ? Firewall and web server
While configring service consle firewall port 27000 is open.what does this control? tranmissions from the ESX to the license server
Which limitation for virtual networking on a ESX/ESXi 4.1 host ? 512 port gorups per standared switch
In vpsher 4 environemnt is using a centrlized license serevr for backword compatibility with esx 3.5 hosts as well.? Grace peroiod is 14 days
Max numner of hosts vcneter can manage esx 4.1 hosts is? 1000
Vmware LUN design schemes that works in your vSphere ? Adpative,Predictive
Defalut amount of memeory allocated for service consle is bettwen ? 300 and 800 MB
Minum numbner of port on ESX /ESXi vswitch ? 8
Which are considered industry accepted topologies for a fiber chnannel SAN ? Switched Fabric
Suse linux Vm in sphere require ? 8vcpu
Two types of zoning used in a fiber Channel SAN ? Hard and soft
max number of v cpus per host in esx ? 512
max number of registered vm per vcenter ? 15000
max number of running vm's per vcenter? 10000
max number linked vceter ? 10
max number of registered vm in vcenter linked mode ? 50000
max number of ruuning vm's in vcenter linked mode > 30000
Max number of esx/esxi hosts vcenter ? 1000
max number of NFS datastore ? 64
max number of lun ESX would process during power on ? 256
max number of VMFS datastore that can be configured ? 256
Max number of VMFS datastores configured per ESX Host ? 256
max vmfs volume size ? 64TB-6k
max supported RAM vsphere host can have regradless of license addtion ? 1TB
Recommaned size of home partition ? 512 MB
Max RDM suppoteed on Vspehre ? 2tb-512MB
Recommand size of temp pratition ? 1024 MB
max floppy disk ? 2 per vm
ESX 4.X service console Virtual Disk contains ? / , /varlog ,/swap
/boot partition requires 1.25GB.
/var/log partition recommeded size 2000MB
/root default size 5GB
Max support RAM for Vsphere 4 is 1 Terabyte
/home recommed size is 512MB
/tmp recommended size 1024
vmkcore 100MB
In order to upgrade to Vpshere 4 and esx host muct have a /boot partition of atleast 100MB.
Host update utility upgrades :Service consle,VMkernerl
Vcenter update manager upgrades :VM hardware,VM tools,Service COnsole
By Default ESX4 is installed with Which security settings ?High with all outbound ports closed
Default warning for password expiration on ESX is how many days ? 7
Max number of vswitches an ESX host xan have ? 248
Min amount of ports on vswitch ? 8
MAX amount of ports support on Vswtich ? 4088
MAX HBA support on VMware VSphere 4 Host ? 8
Max number of Paths allowed in ESX 4.x for an iSCSI LUN ? 8
Max Virtual disk size on a VMFS-3 volume ? 2TB-512B
Swap is Twice the size of serviconsle
Esx root password should be ? 6 char
Service Console ? 1.2GB
vSS and VDS max active ports per host ? 1016
vSS and VDS max ports per host ? 4096
vSwitches does not support ? Spanning tree
ESX/ESXi ? NFS3
Vcenter to ESX port ? 902
Vcenter to License serevr ? 27000 & 27010
VM can have 6 PCI devices
10 Nic
4 iSCSI
4 IDE
2 Floppy
8 Vcpu's
255 RAM
4 serial ports
3 parrel ports
VDS is a template that configure standared virtual switches on each ESX/ESXi hosts.It then abstracts these Virtual Switches from all esx/esxi hosts
and combined at Vcenter level so they appear as single logical entity.
VDS are two planes control plane and I/O plane.
4 core --> 4 hec
Layer 2 in network : segmentation and security and checksum
VSwitches farwording datatable is unique to each virtual Switch.
Security polices ?? Macc address,promiscus and forged
Max directpath per host ? 8
VDSmax virtual ports = 20000
VDS max port groups :5000
wwn :64 bit address
Soft zoning is obscure and hard zoning is prevent across the devices.
VMtools : time synchronization
Guided consolidation : COllective service and Converter services
IE6 and Mozilla 2.0 are need for web acess
Virtualize your dreams by Virtulizing your Applications,Servers,Networks and Desktops. Welcome to the Era of Cloud Computing .Go green in all the Datacenters.
