Tuesday, 30 December 2014

Windows 7 Administrator password reset method

step1: Insert Windows 7 os cd restart your pc

step2 :Select first boot DVD driver

step3 :Press any key from boot CD/DVD Enter

step4 :Go to Repair option,and then Dos command mode enter

step5 :Please type below mentioned code:

copy D:\windows\system32\sethc.exe D:\
copy D:\windows\system32\cmd.exe D:\windows\system32\sethc.exe
Reboot system after logon screen display
press
5 times Shift Key…
net user Username MyNewPassword

Pendrive Shortcut virus

1) முதலில் பென்டிரைவை உங்கள் கணினியில் சொருகி கொள்ளுங்கள்.

2) Start ==> Run ==> CMD==> Enter கொடுக்கவும்.


3) இப்பொழுது பென்ட்ரைவ் எந்த ட்ரைவில் உள்ளது என பாருங்கள். My Computer 

செல்வதன் மூலம் கண்டறியலாம்.


4) உதாரணமாக E: டிரைவில் பென்ட்ரைவ் இருக்கிறது எனவைத்து கொள்வோம் அதற்கு 

நீங்கள் E: என கொடுத்து Enter அழுத்தவும்.


5) attrib -h -s -r /s /d *.*என டைப் செய்யுங்கள் ஒவ்வொருபகுதிக்கும் Space சரியாககொடுக்கவும்.


◦நீங்கள் சரியாக கொடுத்துஉள்ளீர்கள் என உறுதி செய்து கொண்டு Enter அழுத்துங்கள்.


◦சில வினாடிகள் பொறுத்திருங்கள். இப்பொழுது உங்கள் பென்ட்ரைவ் சோதித்து பாருங்கள் உங்களுடைய பைல்கள் அனைத்தும் திரும்பவும் வந்திருக்கும் —

Monday, 22 December 2014

How To Configure DHCP Failover In Windows Server 2012 R2

How To Configure DHCP Failover In Windows Server 2012 R2
In this example we will be using 2 servers, each on which DHCP server role will be installed, on our first server which is a domain controller the DHCP server role has been installed and configured. This is our primary DHCP server (AD.PRAJWAL.LOCAL) running Windows Server 2012 R2 Datacenter edition. On another server running Windows Server 2012 R2 Datacenter edition (DHCP2.PRAJWAL.LOCAL), we will be installing the DHCP server role. Launch the ServerManager and select DHCP Server role. Click Next.
Description: How To Configure DHCP Failover In Windows Server 2012 R2
Click on Install.
Description: How To Configure DHCP Failover In Windows Server 2012 R2
Do not click Close, click on Complete DHCP configuration.
Description: How To Configure DHCP Failover In Windows Server 2012 R2
Click Commit.
Description: How To Configure DHCP Failover In Windows Server 2012 R2
Now on the first DHCP server, launch the DHCP console, right click on IPv4 and click onConfigure Failover.
Description: How To Configure DHCP Failover In Windows Server 2012 R2
Click Next.
Description: How To Configure DHCP Failover In Windows Server 2012 R2
Click on Add Server to add the partner server used for failover. Add the second DHCP server and click Next.
Description: How To Configure DHCP Failover In Windows Server 2012 R2
Type the Relationship Name, select the Mode as Load Balance. Click Next.
If you are looking for explanation of each setting, here it is
Note
Relationship Name - A name to identify the failover.
Maximum Client Lead Time – Determines maximum amount of time that one server can extend a DHCP lease for a client beyond the time known by the failover server.
Mode – Load Balance settings for an active/active configuration or Hot Standby for an active/passive configuration.
State Switchover Interval – If this setting is enabled the active DHCP server will automatically place its partner into down state when it can’t communicate with it for the specified amount of time.
Enable Message Authentication – This option enables authentication of the failover replication traffic between partners. If you enable this option you must also specify the Shared Secret.
Description: How To Configure DHCP Failover In Windows Server 2012 R2
Click Finish.
Description: How To Configure DHCP Failover In Windows Server 2012 R2
Launch the DHCP console on the second DHCP server and you should see the IPv4 Scope similar to the one seen on primary DHCP server.
Description: How To Configure DHCP Failover In Windows Server 2012 R2
To test the DHCP failover we will log in to one of the client machine. Launch the command prompt and type ipconfig /all, make a note of DHCP server that has provided the IP address. In our case the DHCP server is 192.168.100.1 (AD.PRAJWAL.LOCAL).
Description: How To Configure DHCP Failover In Windows Server 2012 R2
Now on 192.168.100.1 DHCP server we will disable the network device. After waiting for few seconds on the client machine we see that DHCP server IP is changed to 192.168.100.5. This means that when our primary DHCP server 192.168.100.1 was down, the other DHCP server 192.168.100.5 assigned the IP address to the client machine.
Description: How To Configure DHCP Failover In Windows Server 2012 R2