Your company has a main office and a branch office. The main office has 3,000 users. The branch office has 100 users. The offices are connected via a WAN link.
You have a Lync Server 2013 infrastructure. The main office has a pool named Pool1 that contains two Enterprise Edition Front End Servers. The branch office only contains an Active Directory domain controller and a file server.
You need to recommend a high-availability solution to ensure that users can establish calls if one of the following components fails:
A Front End Server
A PSTN gateway
A WAN router
The solution must minimize deployment and maintenance costs.
What should you recommend?
A. In the branch office, deploy a second Enterprise Edition pool named Pool2. Configure Pool1 to use Pool2 as a backup pool. Configure one trunk in Pool1. Configure one trunk in Pool2.
B. In the branch office, deploy an SBA named SBA1. Configure SBA1 to use Pool1 as a backup registrar. Configure two trunks in Pool1. Configure one trunk in SBA1.
C. In the main office, deploy a second Enterprise Edition pool named Pool2. In the branch office, deploy an SBA named SBA1. Configure SBA1 to use Pool2 as a backup registrar. Configure two trunks in Pool1. Configure two trunks in SBA1.
D. In the branch office, deploy a second Enterprise Edition pool named Pool2. Configure Pool1 to use Pool2 as a backup pool. Configure two trunks in Pool1. Configure two trunks in Pool2.
