[A40] Your company has a Lync Server 2013 infrastructure that contains four servers. The servers are configured as shown in the following table.
The Lync Server infrastructure contains a hardware load balancer named HLB1. The company has an IP-PBX. The IP PBX does not support media bypass. The IP-PBX has a SIP trunk configured. Each user has a desktop phone that connects to the IP-PBX. Each laptop user has a Lync-certified headset. The company plans to implement Enterprise Voice and to relocate the SIP trunks to the Lync Server infrastructure. You need to recommend a Mediation Server deployment to meet the following requirements:
. Internal users must be able to place outbound calls from their desktop phone if a single server fails.
. Remote users must be able to place calls to any desktop phone if a single server fails.
. The degradation of call quality must be minimized during peak usage hours.
What should you recommend?
A. Install the Mediation Server role on Server3 and Server4.
B. Install the Mediation Server role on Server1 and Server2.
C. Create a Mediation Server pool that contains two new servers.
D. Create a Mediation Server pool that contains HLB1 and one new server.
