Real Microsoft 74-338 practice exam questions for easy pass!
Last Updated: Sep 01, 2026
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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Troubleshoot IM and Presence | 20% | - IM delivery and federation issues - Sign-in and registration failures - Presence status inconsistencies - Persistent Chat problems |
| Topic 2: Troubleshoot Infrastructure and Core Components | 25% | - Certificates, DNS, and authentication - Front End, Back End, and Edge Server problems - Central Logging Service and monitoring tools - Topology and configuration issues |
| Topic 3: Troubleshoot Enterprise Voice | 30% | - Response Group and Call Park service - Mediation Server and gateway connectivity - Media quality and codec issues - Call routing and dial plans - Call Admission Control (CAC) and QoS |
| Topic 4: Troubleshoot Conferencing and Collaboration | 25% | - Meeting join and connectivity - Audio/video quality and media flow - Dial-in conferencing access - Application sharing and Office Web Apps integration |
Question 1
DRAG DROP You support Microsoft Lync Server 2013 servers in your customer's company network.
All computers in the network are members of an Active Directory Domain Services (AD DS) domain named corp.contoso.com.
The Session Initiation Protocol (SIP) domain name is contoso.com. You configure the Autodiscover service to support external mobile device users. Mobile device users running Windows Phone or Apple iOS report that they are unable to sign in to the Lync Mobile Client. You verify that you are able to
-Establish a telnet session from an external computer to host lyncdiscover.contoso.com on port 80.
-Sign in to Lync by manually entering the URL https://lync.contoso.com/Autodiscover/autodiscoverservice.svc/Root. You need to ensure that external users running Windows Phone or Apple iOS are able to automatically sign in to Lync. 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.)
Question 2
You support a customer whose Microsoft Lync Server 2013 Enterprise Pool is configured with Enterprise Voice and Dial-in Conferencing. All client computers run Windows 7 or Windows 8. Many users dial in to conferences and share Microsoft PowerPoint presentations. The server that hosts the conferencing pool is experiencing technical difficulties that are causing conferences to fail. You create a new Lync server and migrate users to this pool. You need to ensure that dial-in conference Uniform Resource Identifier (URI) addresses are maintained. Which cmdlet should you run?
A. Export-CsConferenceDirectory
B. Import-CsLegacyConferenceDirectory
C. Move-CsConferenceDirectory
D. Update-CsConferenceDirectory
Question 3
You support a customer whose network environment includes Microsoft Lync Server 2013 Standard deployed with an Edge Server that is connected to the Internet. Some users have Lync Mobile installed on their mobile devices.When the users attempt to sign in to Lync from their mobile devices on a carrier network, they receive the following error message: "Cannot connect to the server. It might be unavailable. Also please check your network connection, sign-in address, and server addresses." You need to ensure that users are able to sign in to Lync from their mobile devices on a carrier network. What should you do?
A. Add a LyncDiscoverlnternal DNS entry that points to the Lync Front End Pool Server by using a reverse proxy.
B. Add a LyncDiscoverlnternal DNS entry that points to the Lync Edge Server.
C. Add a LyncDiscover DNS entry that points to the Lync Edge Server.
D. Add a LyncDiscover DNS entry that points to the Lync Front End Pool Server by using a reverse proxy.
Question 4
You support a customer whose network environment includes Microsoft Lync Server 2013. A user reports that when he attempts to dial out to a public switched telephone network (PSTN) number, he receives the following message: "Your organization does not support calling this number." All other users are able to call the same number. You verify that the user is able to dial other Lync users in the network. You need to ensure that the user is able to dial out to PSTN numbers. What should you do?
A. Modify the voice policy for this user for PSTN usage.
B. Make sure the session initiation protocol (SIP) provider is sending the invite to a Mediation Server.
C. Open outbound TCP port 5061 on the user's computer.
D. Change the associated normalization rule in the dial plan policy.
Question 5
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?
A. Install and configure Silverlight on the user workstations.
B. Install and configure the PowerPoint 2013 Viewer on the Lync presenter workstations.
C. Install and configure an Office Web Apps Server in Lync Topology.
D. Install and configure the Office Web Apps Server Components on the Lync Pool Server.
Solutions:
| Question 1 Answer: Only visible for members | Question 2 Answer: C | Question 3 Answer: D | Question 4 Answer: A | Question 5 Answer: C |
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