VMware - Top 20 Basic VMware Interview Questions with Answers - Part 2

Part 1 - Part 2 - Part 3 - Part 4

6 - How to restart webaccess service and ssh service on vmware?
Ans - “service vmware-webaccess restart” – this will restart apache tomcat app
“service sshd restart”

Server 2008 R2 Install and Configure 

Remote Desktop Services (Web Access)

SSH Tutorial - Basic server administration with SSH

7 - What are the three port groups present in ESX server networking
Ans - a. Virtual Machine Port Group - Used for Virtual Machine Network
b. Service Console Port Group - Used for Service Console Communications
c. VMKernel Port Group - Used for VMotion, iSCSI, NFS Communications

8 - Does the vSwitches support VLAN Tagging? Why?
Ans - Yes, The vSwitches support VLAN Tagging, otherwise if the virtual machines in an ESX host are connected to different VLANS, we need to install a separate physical NIC (vSwitch) for every VLAN. That is the reason VMware included the VLAN tagging for vSwitches. So every vSwitch supports upto 1016 ports, and BTW they can support 1016 VLANS if needed, but an ESX server doesn’t support that many VM’s.

9 - What is Promiscuous Mode on vSwitch ? What happens if it set to Accept?
Ans - If the promiscuous mode set to Accept, all the communication is visible to all the virtual machines, in other words all the packets are sent to all the ports on vSwitch If the promiscuous mode is set to Reject, the packets are sent to intended port, so that the intended virtual machine is able to see the communication.

10 - What is MAC address Changes ? What happens if it is set to Accept ?
Ans - When we create a virtual machine the configuration wizard generates a MAC address for that machine. You can find it in the .vmx (VM Config) file. If it doesn't match with the MAC address in the OS , it does not allow incoming traffic to the VM. So by setting Reject Option, both MAC addresses will be remain the same, and the incoming traffic will be allowed to the VM.

Part 1 - Part 3 - Part 4