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Topic 6, Mix Questions
You prepare to deliver a network assessment for a customer. The customer has four sites as described in the following table:

The results of the traffic simu-lation for Seattle to Hong Kong are shown in the following table:

You need to analyze the data and provide the General Comments for the traffic simu-lation results. What should you recommend?

• A. The average delay is beyond acceptable levels. Users might experience poor call quality.
• B. The packet loss is above 0.5%. Audio quality will be greatly reduced.
• C. The network performance tests indicate the link is ready for voice.
• D. The percentage of WAN BW for RTC Traffic is greater than 100%, and users will experience poor calls due to limited bandwidth.

Your company corporate telephony environment is a combination of Lync 2013 and traditional Private Branch Exchange (PBX). The company has 3,500 users at three sites that are connected by a Multiprotocol Label Switching (MPLS) topology. On average, the company has 10 percent of its users in conferences and 15 percent on a public switched telephone network (PSTN) call at any time. The company is planning to deploy Wi-Fi solutions for all offices and move all Lync communications through the wireless network.
You are concerned about the quality of voice traffic through the wireless network.
You plan to generate and collect simulated traffic through the wireless network to determine if the traffic is affected by going through the wireless network.
You need to determine if there is any degradation of service through the simulated traffic on the wireless network.
Which piece of information should you generate and collect?

• A. Wi-Fi Multimedia Quality of Service (WMM QoS)
• B. Wi-Fi Multimedia Call Data Record (WMM CDR)
• C. Wi-Fi Multimedia Power Save
• D. Wi-Fi Multimedia Quality of Experience (WMM QoE)

Your company 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 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. The company plans to add additional bandwidth for all sites.
The company is concerned about the number of dropped calls on the PBXs.
As part of a bandwidth upgrade process, you model real-time transport protocol (RTP) media call flows for audio communications. You have determined the average number of calls and estimated the bandwidth required for the audio portion of the calls.
You need to identify the additional bandwidth requirements when modeling real-time transport control protocol (RTCP) traffic.
Which bandwidth option should you choose?

• A. 5 kilobits per second (kbps) total
• B. 20 kilobits per second (kbps) total
• C. 5 kilobits per second (kbps) per stream
• D. 20 kilobits per second (kbps) per stream

You need to recommend a network upgrade based on the results of the Lync traffic simulation. Which upgrade should you recommend?

• A. Upgrade the backup Internet connection at the Quebec call center.
• B. Upgrade the backup Multiprotocol Label Switching (MPLS) link at the Toronto data center.
• C. Upgrade the backup Internet connection at the Toronto data center.
• D. Upgrade the backup Internet connection at the Montreal call center.

You perform a network readiness assessment for Lync deployment.
The network includes a main office and 40 branch offices. The main office and 30 of the branch offices are located in North America and use a dedicated 20-megabits per second (Mbps) Multiprotocol Label Switching (MPLS) link.
The remaining 10 branch offices are located in India and are connected to the main office by a virtual private network (VPN) site-to-site link. Each branch office includes 100 clients and two multipurpose servers.
Employees from the branch offices will use the Lync client for peer-to-peer audio communications with employees at the main office.
You need to identify the number of offices required to test Lync readiness.
What is the minimum number of offices you should include?

• A. 40
• B. 3
• C. 41
• D. 2