Microsoft 74-335 Question Answer

Your company's corporate telephony environment is a combination of Lync 2013 and traditional Private Branch Exchange (PBX). The sites are connected by a Multiprotocol Label Switching (MPLS) topology. There are 6,500 users enabled for Lync 2013 video conferencing. Only RTVideo is being used for video conferencing. On average, 12 percent of users are on a video conference at any one time. The company plans to add additional bandwidth for all sites. The company is concerned about the quality of video conferences. As part of a bandwidth upgrade process, you model real-time transport protocol (RTP) media call flows for video communications that use only RTVideo. You have determined the average number of video conferences and estimated the bandwidth required for the video portion. You need to identify the additional bandwidth requirements when modeling real-time transport control protocol (RTCP).
Which bandwidth option should you choose?

A. 10 kilobits per second (kbps) per stream
B. 15 kilobits per second (kbps) per stream
C. 10 kilobits per second (kbps) total
D. 30 kilobits per second (kbps) total

Answer: A


Your company corporate telephony environment is a combination of Lync 2013 and traditional Private Branch Exchange (PBX). The company has three sites that are connected by a Multiprotocol Label Switching (MPLS) topology. There are 750 users who are using Lync 2013 and 2,500 users who are using the PBX environment. On average, the company has 10 percent of its users in conferences. Multiple users report dropped calls and poor voice quality. The company is planning to add additional bandwidth for all sites. You plan to generate and collect simulated traffic and then analyze the variations in the baseline network characteristics for each audio call. You need to collect the baseline network characteristics to simulate peer-to-peer (P2P), conference, and public switched telephone network (PSTN) communications. Which three pieces of information should you collect? (Each answer presents part of the solution. Choose three.)

A. cycle jitter
B. burst packet loss
C. sampling jitter
D. one-way network delay
E. average jitter
F. jitter period

Answer: BDE