Your network contains an Active Directory domain named adatum.com. The domain contains a member server named L0N-DC1. L0N-DC1 runs Windows Server 2012 R2 and has the DHCP Server role installed. The network contains 100 client computers and 50 IP phones. The computers and the phones are from the same vendor. You create an IPv4 scope that contains addresses from 172.16.0.1 to 172.16.1.254. You need to ensure that the IP phones receive IP addresses in the range of 172.16.1.100 to 172.16.1.200. The solution must minimize administrative effort.
What should you create?
A . Server level policies
B . Reservations
C . Filters
D . Scope level policies
Answer: D
Explanation:
The scope is already in place.
Scope level policies are typically settings that only apply to that scope. They can also overwrite a setting that was set at the server level.
When a client matches the conditions of a policy, the DHCP server responds to the clients based on the settings of a policy.
Settings associated to a policy can be an IP address range and/or options.
An administrator could configure the policy to provide an IP address from a specified sub-range within the overall IP address range of the scope.
You can also provide different option values for clients satisfying this policy.
Policies can be defined server wide or for a specific scope.
A server wide policy C on the same lines as server wide option values C is applicable to all scopes on the DHCP server.
A server wide policy however cannot have an IP address range associated with it .
There a couple of ways to segregate clients based on the type of device. One way to do this is by using vendor class/identifier.
This string sent in option 60 by most DHCP clients identify the vendor and thereby the type of the device.
Another way to segregate clients based on device type is by using the MAC address prefix. The first three bytes of a MAC address is called OUI and identify the vendor or manufacturer of the device.
By creating DHCP policies with conditions based on Vendor Class or MAC address prefix, you can now segregate the clients in your subnet in such a way, that devices of a specific type get an IP address only from a specified IP address range within the scope. You can also give different set of options to these clients.
In conclusion , DHCP policies in Windows Server 2012 R2 enables grouping of clients/devices using the different criteria and delivering targeted network configuration to them .
Policy based assignment in Windows Server 2012 R2 DHCP allows you to create simple yet powerful rules to administer DHCP on your network.
References:
Training Guide: Installing and Configuring Windows Server 2012 R2, Chapter 6: Network Administration, p.253