You are employed as a network administrator at ABC.com.
ABC.com has an Active Directory domain named. ABC.com all servers on the ABC.com network
have Windows Server 2012 R2.
You are running a training exercise for junior network administrators.
You are currently discussing DHCP failover architecture.
You have informed the trainees that DHCP servers can be deployed as fail over partners in either
hot standby mode or load sharing mode.
Which of the following is TRUE with regards to hot standby mode? (Choose all that apply)
A.
It is when two servers function in a fail over relationship where an active server is responsible for
leasing IP address and configuration data to all clients in a scope or subnet
B.
It when two servers in a fail over relationship server IP addresses and options to clients on a
given subnet at the same time
C.
It is best suited to deployments where a data center server acts as a standby backup server to a
server at a remote site
D.
It is best suited deployments where both servers in a fail over relationship are located at the
same physical site
I agree with A, but not with C.
I think it should be A+D?!
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https://technet.microsoft.com/en-us/library/dn338976(v=ws.11).aspx
“In hot standby mode, two servers operate in a failover relationship where an active server is responsible for leasing IP addresses and configuration information to all clients in a scope or subnet. The partner server assumes a standby role, with responsibility to issue leases to DHCP clients only if the active server becomes unavailable. Hot standby mode is ideal for scenarios where the failover partner is only intended to be used temporarily when the active server is unavailable.”
Answer: A,C
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But that explanation doesn’t state whether the hot-standby is ‘best suited’ to be placed in a remote site or in the same site as the active partner, sdquirra.
In my opinion the hot-standby should be in the same site. Otherwise you’d be incurring latency on round-trip request for IP’s.
I agree with Kyro and my money would be on A and D in this question.
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https://blogs.technet.microsoft.com/teamdhcp/2012/09/03/dhcp-failover-hot-standby-mode/
Hot-Standby mode is more suited for multi-site deployment topologies. Each site would have a local DHCP server which is configured to provide the DHCP service to the clients on the local network and DHCP server at a remote site would be standby server.
Given answer, A & C appear correct.
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