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Microsoft Lync 2013 Depth Support Engineer Sample Questions:

1. Your customer's company has a main office and five branch offices located in different cities. Your customer has a Microsoft Lync Server 2013 datacenter configured with Enterprise Voice at the main office. The customer has deployed a Survivable Branch Appliance (SBA) at the first branch office and connected it to a public switched telephone network (PSTN) by using a Tl trunk line provided by your service provider. The gateway is configured to use fully qualified domain names (FQDNs). All functionality has been tested by using pilot users at the branch office. The customer reports that they tested branch isolation by disconnecting the wide area network (WAN) from their branch office and making an outbound call. The call was successful. Next, they made an inbound call to the branch office and the call failed. To troubleshoot the issue, you begin a trace of IncomingAndOutgoingCalls by using centralized logging, and make an inbound call. You open the log in snooper and search for incoming calls with the phone number from which you are calling. You do not find any messages. You open the syslog from the gateway side of the SBA and discover that messages are sent to the Lync Mediation server pool, but no responses have been received. You connect the WAN from the branch office and make an inbound call. The call is successful. Your investigation suggests that there is a configuration error on the Gateway side of the SBA. You need to identify the configuration error that causes inbound calls to fail. What should you check?

A) DNS settings on the gateway
B) Dynamic Host Configuration Protocol (DHCP) options on the branch DHCP server
C) The domain controller at the branch office
D) Route settings of the gateway

2. You support a customer whose Microsoft Lync Server 2013 Enterprise Pool is configured with Enterprise Voice and Dial-in Conferencing. You specify a Session Initiation Protocol (SIP) Uniform Resource Identifier (URI) for the dial-in conferencing access number. You discover that the SIP URI was configured incorrectly. You need to change the SIP URI. What should you do?

A) Delete the object and recreate the access number.
B) Run the Set-CsDialInConferencingAccessNumber cmdlet.
C) Run the New-CsDialInConferencingDtmfConfiguration cmdlet.
D) Run the Set-CsSipResponseCodeTranslationRule cmdlet.

3. You support Microsoft Lync Server 2013 servers in your customer's network.
The network includes wired and wireless networks.
The network is configured to support Microsoft Lync Mobile users who have mobile devices that are running Microsoft Lync 2010 for iPhone. Users of Lync 2010 for iPhone report that they are unable to receive push notifications when they are connected to the company's internal network. They are able to receive push notifications when they are connected to their cellular network. You need to diagnose why these users cannot receive push notifications. What should you do?

A) Run the Test-CsFederatedPartner cmdlet.
B) Open a Telnet session to port 5223.
C) Run the Test-CsMcxP2PIM cmdlet.
D) Run the Test-CsPhoneBootstrap cmdlet.

4. You support a datacenter that runs Microsoft Lync Server 2013 with Enterprise Voice (EV). The company has opened two new satellite branches and configured one with a Survivable Branch Appliance (SBA) and the other with a Survivable Branch Server (SBS). Neither branch has a DNS server. A wide area network (WAN) outage occurs and EV stopped working for the branch users. You need to ensure that EV functionality continues in the event of WAN outages. What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A) Enable backup Registrar discovery by configuring the SBA or SBS to respond to Dynamic Host Configuration Protocol (DHCP) 120 queries.
B) Enable backup Registrar discovery by configuring Dynamic Host Configuration Protocol (DHCP) option 60 on the branch site's DHCP server.
C) Enable backup Registrar discovery by configuring Dynamic Host Configuration Protocol (DHCP) option 55 on the branch site's DHCP server.
D) Enable backup Registrar discovery by configuring Dynamic Host Configuration Protocol (DHCP) option 120 on the branch site's DHCP server to point to the fully qualified domain name (FQDN) of the SBA or SBS.

5. You support a customer whose network environment includes Microsoft Lync Server 2013. A firewall filters all inbound traffic from the Internet. All outbound IP traffic is permitted. Users report voice quality problems when they attempt to communicate with external participants. You need to ensure that Lync users are able to communicate with external participants. Which two ports should you open on the firewall? (Each correct answer presents part of the solution. Choose two.)

A) UDP port 3478
B) TCP port 443
C) TCP port 8057
D) TCP port 4443
E) TCP port 5061

Solutions: