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Which configuration should you use?

Your network contains an Active Directory domain named contoso.com.
The domain contains a main office and a branch office. An Active Directory site exists for each office.
The domain contains two servers named Server1 and Server2 that run Windows Server 2012 R2.
Both servers have the DHCP Server server role installed. Server1 is located in the main office site.
Server2 is located in the branch office site. Server1 provides IPv4 addresses to the client computers in the main office site.
Server2 provides IPv4 addresses to the client computers in the branch office site.
You need to ensure that if either Server1 or Server2 are offline, the client computers can still obtain IPv4 addresses.
The solution must meet the following requirements:
– The storage location of the DHCP databases must not be a single point of failure.
– Server1 must provide IPv4 addresses to the client computers in the branch office site only if Server2 is offline.
– Server2 must provide IPv4 addresses to the client computers in the main office site only if Server1 is offline.
Which configuration should you use?

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A.
load sharing mode failover partners

B.
a failover cluster

C.
hot standby mode failover partners

D.
a Network Load Balancing (NLB) cluster

Explanation:
A)
The load sharing mode of operation is best suited to deployments where both servers in a failover relationship are located at the same physical site.

B)
Hot standby mode of operation is best suited to deployments where a central office or data center server acts as a standby backup server to a server at a remote
site, which is local to the DHCP clients
C)
Needs to be a DHCP Failover option
D)
Needs to be a DHCP Failover option
http://technet.microsoft.com/en-us/library/hh831385.aspx
http://blogs.technet.com/b/teamdhcp/archive/2012/09/03/dhcp-failover-hot-standbymode.aspx

3 Comments on “Which configuration should you use?

  1. asd says:

    Nope, C.

    If it were A then they would both give out IPs to each site, not logical.

    https://blogs.technet.microsoft.com/teamdhcp/2012/09/03/dhcp-failover-hot-standby-mode/

    “In the event of an outage of the active server, the standby server needs to be able to renew existing IP address leases as well as give out new IP address leases to clients who request a new lease. For the later scenario – leasing new IP addresses to clients, the standby server needs a free IP address pool available to it from which it can give out new leases. The standby server will take over the free IP address pool of the active server only after it transitions into Partner Down state”




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