To configure a computer to automatically adjust the link speed of its network adapter in Windows Server 2008

To configure a computer to automatically adjust the link speed of its network adapter in Windows Server 2008

On the Start menu, click Control Panel.
Click Network and Internet.
Click Network and Sharing Center, and then click Manage network connections.
The Network Connections folder opens.
Right-click the relevant network connection (by default, Local Area Connection), and then click Properties.
The Local Area Connection Properties dialog box opens.
Click Configure.
The properties dialog box for the adapter opens.
Click the Advanced tab.
In the Property list, click the property that corresponds to the connection type, such as Connection Type, Duplex Mode, Media, Media Type, or Link Speed & Duplex, depending on the adapter's attributes.
In the Value list, click Autosense.

How to determine the NIC speed of the PC

How to determine the NIC speed of the  PC:

Windows XP/ 2003:

Click "Start > Settings > Control Panel".
Select "Network Connections".
Right click on the "Local Area Connection" select "Properties".
In the "Local Area Connection Properties" window, select the "Configure" button.
Select the "Advanced" tab.
In the scroll list of options find "Media Type" and select it.
The NIC speed will be displayed in the "Value" drop down menu.
Windows Vista/ Windows 7/2008:

Click "Start > Settings > Control Panel".
Select "Network and Sharing Center".
On the right panel select "Change Adapter settings"
Right click on the "Local area Connection" and select "Properties".
In the "Local Area Connection Properties" window select the "Configure" button.
Select the "Advanced" tab.
In the scroll list of options find "Speed & Duplex" or "Link Speed & Duplex" and select it.
The NIC speed will be displayed in the "Value" drop down menu.

what is L1,L2 and L3 levels in networking

Level 1 - 

Will manage network physical connectivity between sites.Use basic sho commands to troubleshoot anynetwork flap,Neighour flap,HSRP flap or any change in network which effect conncectivity between the sites.

Level 2 -

Will do changes in a Network depends upon network requirment(which includes IOS upgradation,Route the traffic from Primary to seconday if Primary link is flappping,bouncing the  ports,adding vlan,adding a routes,Network) and they will Solve all those tickets which are not resolved by Level 1 engineer

Level 3 - 

Will support and Solve all those tickets which are not resolved by Level 2 engineer.manage mostCritical Incidents on a Network.