Microsoft 74-338 : Lync 2013 Depth Support Engineer Exam
- Exam Code: 74-338
- Exam Name: Lync 2013 Depth Support Engineer Exam
- Updated: Nov 07, 2026
- Q & A: 114 Questions and Answers
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Microsoft 74-338 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Troubleshoot Enterprise Voice | 30% | - Media quality and codec issues - Response Group and Call Park service - Call routing and dial plans - Mediation Server and gateway connectivity - Call Admission Control (CAC) and QoS |
| Troubleshoot Conferencing and Collaboration | 25% | - Meeting join and connectivity - Dial-in conferencing access - Application sharing and Office Web Apps integration - Audio/video quality and media flow |
| Troubleshoot IM and Presence | 20% | - Persistent Chat problems - IM delivery and federation issues - Presence status inconsistencies - Sign-in and registration failures |
| Troubleshoot Infrastructure and Core Components | 25% | - Certificates, DNS, and authentication - Central Logging Service and monitoring tools - Topology and configuration issues - Front End, Back End, and Edge Server problems |
Microsoft Lync 2013 Depth Support Engineer Sample Questions:
Your customer has deployed a Microsoft Lync Server 2013 Enterprise Edition Front End server and has configured Enterprise Voice. The customer has deployed Server Branch Appliances (SBAs) at each of the remote office locations. The customer has reported that multiple users in one of the remote offices are not able to dial certain local numbers using Lync. The users are receiving the error "+1
(425) 555-0100 is unavailable or may not be valid/' and the call fails to setup. The customer has provided the following information from the Local Number normalization rule from the Dial Plan from the remote office that is experiencing the issue: Pattern to Match: "1((4251206)\d{7})$ Translation Rule: +1$1 You need to ensure that all users at the remote office are able to dial local 10-digit numbers with or without a leading 1. What should you do?
- A. Change the pattern to match from ^1((425|206)\d{7})$ to ^1?((425|206)\d{7})$.
- B. Change the pattern to match from ^1((425|206)\d{7})$ to ^((1?425|1?206)\d{7})$.
- C. Change the translation pattern from k+1$1 to +$1.
- D. Change the translation pattern from +1$1 to +1.
Correct Answer: A 🗳️
DRAG DROP You deploy a Microsoft Lync Server 2013 Enterprise pool named Lync2013.contoso.local.
The pool is configured with
the Session Initiation Protocol (SIP) domain litware.com. The environment includes the following:
-a Front End Server named Lync2013FE1
-a Back End Server named Lync2013BE
-an Edge Server named Lync2013Edge that is a member of Edge pool Edgepool.contoso.local
Your Lync 2013 topology supports the following access, meeting, administration, and external web service URLs:
-https://Dialin.litware.com
-https://Meet.litware.com
-https://Admin.contoso.local
-https://external.litware.com
You want to support external Lync Web App clients.
You plan to publish Lync 2013 HTTP Web services through a reverse proxy. You need to issue a certificate to publish Lync 2013 Web services through a reverse proxy firewall. Which three steps should you perform in sequence? (To answer, move the appropriate three actions from the list of actions to the answer area and arrange them in the correct order.)
Correct Answer:
Explanation:
Box 1:
Box 2: Create a publishing rule on the reverse proxy firewall to forward requests to the Front End Server.
Box 3: Install the certificate on reverse proxy firewall.
Note:
*Incorrect: No mobile devices or autodiscovery needed in this scenario.
*(step 1) You need to install the root certification authority (CA) certificate on the server running Microsoft Forefront Threat Management Gateway 2010 for the CA
infrastructure that issued the server certificates to the internal servers running Microsoft Lync Server 2013. You also must install a public web server certificate on your reverse proxy server. This certificate's subject alternative names should contain the published external fully qualified domain names (FQDNs) of each pool that is home to users enabled for remote access, and the external FQDNs of all Directors or Director pools that will be used within that Edge infrastructure. The subject alternative name must also contain the meeting simple URL, the dial-in simple URL, and, if you are deploying mobile applications and plan to use automatic discovery, the external Autodiscover Service URL as shown in the following table. *(step 2) If your internal deployment consists of more than one Standard Edition server or Front End pool, you must configure
web publishing rules for each external web farm FQDN and you will either need a certificate and web listener for each, or you must obtain a certificate whose subject alternative name contains the names used by all of the pools, assign it to a web listener, and share it among multiple web publishing rules. *(step 3 ) You create a certificate request on the reverse proxy. You create a request on another computer, but you must export the signed certificate with the private key and import it onto the reverse proxy once you have received it from the public certification authority.
Reference:
Request and Configure a Certificate for Your Reverse HTTP Proxy
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. The domain controller at the branch office
- C. Route settings of the gateway
- D. Dynamic Host Configuration Protocol (DHCP) options on the branch DHCP server
Correct Answer: A 🗳️
You are a member of the CsAdministrator group that supports the Microsoft Lync 2013 datacenter for the Contoso company. The Contoso datacenter has 65,000 users. The datacenter has two pools, named ConPool01 and ConPool02. Both pools run Microsoft Lync Server 2013. The Central Management Store is hosted on ConPool01. The servers that run ConPool01 suffer a catastrophic failure. You want users hosted on ConPool01 to be supported permanently on ConPool02. You need to fail over ConPool01. What should you do?
- A. Run the Set-CsConfigurationStoreLocation cmdlet.
- B. Run the Get-CsDatabaseMirrorState cmdlet, and then the Invoke-CSManagementServerFailover PowerShell cmdlet.
- C. Run the Install-CsDatabase PowerShell cmdlet, and then the Move- CsManagementServer cmdlet.
- D. Run the Invoke-CsPoolFailover PowerShell cmdlet.
Correct Answer: B 🗳️
You support a Microsoft Lync Server 2013 environment.
The network includes:
-An Enterprise Edition Front End Pool with two Front End Servers,
-A mediation server that is collocated on the Front End Server, and
-A media gateway with 4 Tl trunks for public switched telephone network (PSTN) connectivity.
Users report intermittent outbound PSTN call failures. There are no issues with inbound PSTN
calls. You view the event log information as shown in the exhibit. (Click the Exhibit button.)
You need to find out why outbound calls are failing.
Which two event IDs should you investigate? (Each correct answer presents a complete solution. Choose two.)
- A. 46009
- B. 44009
- C. 46027
- D. 46026
Correct Answer: A,C 🗳️
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