What is driver signing, and how does it affect drivers that are not signed in Windows Server 2016?

What will be an ideal response?

When you install a device such as a pointing device or a NIC, Windows Server 2016 checks to make sure that the driver for that device has been verified as secure. When a driver is verified, a unique digital signature is incorporated into it in a process called driver signing. When Windows Server 2016 determines that a device driver is not signed, it gives you a warning, such as "Windows can't verify the publisher of this driver software." Another type of warning might indicate that the driver is altered. Device drivers that are unsigned cannot be loaded into Windows Server 2016 (unless they are introduced by malware).