System Administrator

IIS Virtual Directory: A virtual directory is a directory that is not contained in the home directory but appears to client browsers as though it were. What is ISAPI?                                         Internet Server Application Programming Interface (ISAPI), is an API developed to provide the application developers with a powerful way to extend the functionality of Internet Information Server (IIS). Although ISAPI extensions by no means are limited to IIS, they are extensively used in conjunction with MS-IIS. What is application pool? Application Pools” that can house a single or multiple web sites. It provides a convenient way to administer a set of Web sites and applications and increase reliability,

Part - 1 : Interview question & Answer for AD, DNS, DHCP, WINS & DFS Active Directory Active Directory is a centralized and standardized system, stores information about objects in a network and makes this information available to users and network administrators. Domain Controller In an Active Directory forest, the domain controller is a server that contains a writable copy of the Active Directory database, participates in Active Directory replication, and controls access to network resources.

How do I change a forgotten root password on my ESX Server Host? Normally there are also a keyboard issue which cause the problems you should also test the keyboard in different physical machine. but if its remote please follow the below suggestion If you have forgotten or don't know the password for the root user on an ESX Server host, you can change it without reinstalling ESX Server.  Warning : This can be used maliciously and should be safeguarded against through proper physical access to the host, authenticated remote console access, monitoring and protection against reboot procedures (e.g. grub password) and limited access to the management network. Note : The procedure below performs a password reset, it "blindly" replaces the existing root password with a new one. This is not password recovery, it does not allow you to learn the original root password. VMware does not provide tools or methods to recover the original root password of an ESX host.

How to change the blocksize of a VMFS filesystem  By default, VMWare ESX server uses a 1M block size which limits you to having a maximum of 256GB in any single virtual machine. By changing the block size of your vmfs partition, you can increase the maximum amount of disk you can have. A 2M block size yields a maximum disk size of 512 GB, 4M yields 1TB, and 8M yields 2TB. There is no support for anything larger under vmfs3. Vmfs2 had a maximum block size of 16M, but that has been removed in the vmfs3 specification. To change the block size of a vmfs filesystem, you need to use vmkfstools to reformat the partition. The command is: vmkfstools ‐‐createfs vmfs3 ‐‐blocksize 8M vmhba0

Active Directory Active Directory is a centralized and standardized system, stores information about objects in a network and makes this information available to users and network administrators. Domain Controller In an Active Directory forest, the domain controller is a server that contains a writable copy of the Active Directory database, participates in Active Directory replication, and controls access to network resources. Global catalog server Intrasite Replication Intersite Replication File Replication Service (FRS) Lightweight Directory Access Protocol (LDAP) Universal group membership caching Flexible Single Master Operations (FSMO)  

Hostname: ESXi.happy.com   Observations:       - As per vmksummary, the ESXi was powered off at 24-03-2015 16:33:20 UTC time and booted back at 24-03-2015 17:02:30.   Version: ESXi Build: 5.1.0 build-914609