You support Microsoft Lync Server 2013 Enterprise servers in your customer’s organization. All client
computers run Windows 7 or Windows 8. You configure dial-in conferencing. Users are dispersed in
several locations. Users report that they cannot use dial-in conferencing for their conferences. You
run the Get-CsDialPlan cmdlet and receive the output shown in the following exhibit. (Click the
Exhibit button.)

You need to ensure that users can join conferences by using dial-in conferencing. What should you
do?

You support a customer whose Microsoft Lync Server 2013 environment includes a single Lync
Server 2013 Standard Edition pool located in a main office and four branch offices that are
connected by a 3MB dedicated wide area network (WAN) link, with 100 users in each office. The
Lync client’s IP address is 10.0.0.100. The Lync IP server’s address is 192.168.255.2. Quality of Service
(QoS) is configured in Lync server for voice to use the differentiated services code point (DSCP) with
a value of 46. Users in the branch offices report poor audio quality during conferences that are
hosted on Lync. The results of a network trace include the following information:

Based on the network trace, you need to identify the most likely cause of the call quality issues.
Which setting should you modify?

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?

You deploy a Microsoft Lync Server 2013 Enterprise Pool that is configured with Enterprise Voice and
Dial-in Conferencing. All client computers run Windows 7 or Windows 8, and all use Lync 2013. Users
report that they are unable to share Microsoft PowerPoint presentations with users who are using
certain mobile devices. They also report that they are unable to scroll through a PowerPoint
presentation independent of the presentation itself. You need to ensure that while they are in
conferences, users are able to share PowerPoint presentations with users who are using mobile
devices. You also need to ensure that users are able to scroll through PowerPoint presentations.
What should you do?

You support a customer whose network environment includes Microsoft Lync Server 2013 Standard
Edition deployed with an Edge Server that is connected to the Internet. A user reports that when he
tries to share a Microsoft PowerPoint presentation in a Lync conference, external users receive the
following error message: “Some sharing features are unavailable due to server connectivity issues.”
You ask the customer to run the Get-OfficeWebAppsFarm cmdlet on the Office Web Application
Companion (WAC) server. He provides the following result:

You need to ensure that external users are able to share and view PowerPoint presentations in Lync
meetings. What should you do?

You support a customer whose company network includes Microsoft Lync Server 2013 with web
conferencing deployed at a main site named Washington and a branch site named Redmond. All
users have Lync 2013 and Microsoft Outlook 2013 installed. UserA and UserB are both Lync-enabled
users at your customer’s main site. UserA has the Global conferencing policy and the Washington
meeting configuration assigned to his account. UserB has the Redmond conferencing policy and the

Global meeting configuration assigned to his account. In online meetings that UserA schedules, users
can collaborate using videoconferencing. In online meetings scheduled by UserB, videoconferencing
is not available. You need to determine why videoconferencing is unavailable in UserB’s meetings.
Which cmdlet should you run from the Lync Server Management Shell?

You support a customer whose Microsoft Lync Server 2013 environment includes:
• A single Standard Edition server,
• A single consolidated Edge server, and
• A single Forefront Threat Management Gateway 2010 server that is acting as an HTTP(S)
reverse proxy.
A user reports that his attempts to join an online meeting by clicking the Join Online Meeting link are
unsuccessful. Your need to troubleshoot the Join Online Meeting functionality from this workstation
without using the installed Lync 2013 client. You need to achieve this goal by using the least amount
of administrative effort. What should you do?

You support a customer whose network environment includes Microsoft Lync Server 2013 Standard
deployed with an Edge Server that is connected to the Internet. Users are able to share screens
remotely during conference calls. However, when they attempt to upload a Microsoft PowerPoint
presentation, the sharing attempt fails with an error. You need to ensure that users are able to share
PowerPoint presentations during Lync conference calls. What should you do?

You support a Microsoft Lync Server 2013 Enterprise pool deployed in a high availability
configuration for Back End Servers named Backend1 and Backend2. You execute the GetCSDatabaseMirrorState cmdlet and discover the following errors. WARNING: Cannot connect to
database server “BackEnd2.contoso.com”.Message: A network-related or instance-specific error
occurred whileestablishing a connection to SQL Server. The server was not found or was
notaccessible. Verify that the instance name is correct and that SQL Server isconfigured to allow
remote connections. (provider: Named Pipes Provider, error: 40 – Could not open a connection to
SQL Server)DatabaseName
: rtcabStateOnPrimary
: PrincipalStateOnMirror
: StatusUnavailableMirroringStatusOnPrimary :synchronizedMirroringStatusOnMirror
:DatabaseName
: rtcxdsStateOnPrimary
: PrincipalStateOnMirror
: StatusUnavailableMirroringStatusOnPrimary :synchronizedMirroringStatusOnMirror
You need to resolve the connectivity issue and bring up the mirror databases to the synchronized
state between the Back End Servers. What should you do?

You support a customer whose network environment includes Microsoft Lync Server 2013
Enterprise, with two Front End Servers and two Back End Servers. The Back End Servers are deployed
in a high availability configuration. You create a Front End pool named pool.contoso.com and
implement DNS load balancing for client access to the Lync servers. Your internal DNS records have
the following configuration:
_gc._tcp.contoso.com SRV priority 0, weight 100, port 3268 dc1.contoso.com_ldap._tcp.contos.com
SRV priority 0, weight 100, port 389 dc1.contoso.com_kerberos._tcp.contos.com SRV priority 0,
weight 100, port 88 dc1.contoso.com_sip._tls.contoso.com SRV priority 0, weight 0, port 5061,
pool.contoso.com FrontEndServer1 A 192.168.1.10FrontEndServer2 A 192.168.1.11BackEndServer1
A 192.168.1.20BackEndServer2 A 192.168.1.21Pool01
A
192.168.1.10Pool01
A
192.168.1.11 Your Lync 2013 clients fail to sign in automatically. The trace log of failed sign-in
attempt is as follows: INFO

:: QueryDNSSrv – DNS Name[_sipinternaltls._tcp.contoso.com]ERROR :: HRESULT failed: 80072726 =
HRESULT_FROM_WIN32(::ShimWSAGetLastError()) . Failed to convert string IP to SOCKADDRERROR
:: ResolveHostNameUsingGetAddrInfo – getaddrinfo(pool.contoso.com) failed WARN
:: ResolveHostName – getaddrinfo failed for pool.contoso.com ERROR ::
ResolveHostNameUsingDnsQuery – DnsQuery(pool.contoso.com) failed WARN
:: ResolveHostName – DNS lookup failed for pool.contoso.com ERROR :: ResolveHostName – Name
resolution for pool.contoso.com failedERROR :: ResolveHostSyncResolveHostName failed ERROR ::
GetDnsResults – did not get any resultERROR :: QueryDNSSrvGetDnsResults query:
_sipinternaltls._tcp.contoso.com failed ERROR ::
DNS_RESOLUTION_WORKITEM::ProcessWorkItemResolveHostName failed
You need to ensure that internal Lync 2013 clients can sign in automatically. You also need to ensure
that internal traffic is load balanced across the two Front End Servers. What should you do?