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Lync Network Readiness Assessment: 74-335 Exam
74-335 Questions & Answers
Exam Code: 74-335
Exam Name: Lync Network Readiness Assessment
Q & A: 108 Q&As

QUESTION 1
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 simulation 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 simulation
results. What should you recommend?
A. The average delay is beyond acceptable levels. Users might experience poor call quality.
B. The network performance tests indicate the link is ready for voice.
C. The packet loss is above 0.5%. Audio quality will be greatly reduced.
D. The percentage of WAN BW for RTC Traffic is greater than 100%, and users will experience poor calls
due to limited bandwidth.
Answer: A

QUESTION 2
Woodgrove Bank plans to implement Lync 2013 for all voice and video enterprise
communications. The bank’s network topology is shown in the exhibit. (Click the Exhibit button.)The bank wants to design a Lync Server traffic simulation before the production implementation.
You need to determine the locations to test the Lync Server traffic simulation. Which locations
should you test?
A. Main office in Boston
Data centers in New York, Prague, and Beijing
One branch in North America
One branch in Europe
One branch in Asia
B. Main office in Boston
Data center in New York
All sites that have connectivity issues
C. Main office in Boston
Data centers in New York, Prague, and Beijing
Two branches in North America
One branch in Europe
Three branches in Asia
D. Main office in Boston
Data centers in New York, Prague, and Beijing
Ten branches in North America
Five branches in Europe
Ten branches in Asia
Answer: C

QUESTION 3
Fourth Coffee has deployed a Lync 2013 infrastructure. Company employees and guests joining
from outside of the company do not report any issues with shared media. The company reports,
however, that visiting consultants experience poor audio quality when they conduct peer-to-peer
(P2P) audio sessions with Fourth Coffee employees who are located in the same office. A section
of the call data report (CDR) in represented in the following table:You need to identify the root cause of poor audio quality. Which value should you choose?
A. Applied bandwidth limit: 81 Kbps
B. Lower burst gap duration
C. Avg. round trip: 434 ms
D. Callee IP: 69.87.59.241
Answer: D

QUESTION 4
Northwind Traders has a Lync 2013 deployment. The company has outsourced the help desk to a
third- party service provider that is located in New Delhi. The service provider has a 10-MB siteto-site virtual private network (VPN) connection to Northwind Traders. The service provider uses
a proxy server to route and monitor traffic to Northwind Traders. Both sites’ computers are on the
10.10.1.x/24 subnet. The proxy server’s Northwind Traders-facing IP is 192.168.1.100. New Delhi
users can access Northwind Traders’ Lync environment with username@northwindtraders.com,
and they are able to access conferences without issue. However, users complain that they are
unable to share their desktops. You need to recommend a solution. Which two actions should you
recommend? (Each correct answer presents a complete solution. Choose two.)
A. Add an Edge server at the New Delhi office.
B. Route Lync traffic externally by using the Edge server.
C. Disable all firewalls between Northwind Traders and New Delhi.
D. Change IP scope and remove the proxy server.
Answer: AB

QUESTION 5
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. 2
B. 3
C. 40
D. 41
Answer: B

QUESTION 6
Your customer has a main office that houses 450 employees and a call center that houses 120
employees. The main office and the call center are connected by a 100-megabits per second
(Mbps) wide area network (WAN) link. The call center uses a Private Branch Exchange (PBX)
that has 150 incoming lines.
Your customer plans to deploy a Lync infrastructure for atl employees. You collect network
information and start building a Lync usage model. You need to identify the deliverables that must
be achieved after the Lync usage modeling phase is completed.
Which two deliverables should you achieve? (Each correct answer presents part of the solution.
Choose two.)
A. Quality of Service (QoS) configuration
B. calculation of user-generated Lync traffic
C. calculation of server-to-server generated Lync traffic
D. calls simulation over the WAN link
E. RTC traffic estimation over the WAN link
Answer: AC

QUESTION 7
You perform a network readiness assessment for Lync deployment. The organization’s network
includes a head office and 400 branch offices. All branch offices are connected to the head office
with a Multiprotocol Label Switching (MPLS) link. You have completed the traffic simulation. The
Usage Modeling Data for the Beijing site is shown in the following table:A summary of the simulation results is shown in the table below:
Detailed simulation results are shown in the following exhibits:
One Way Network Delay {Click the Exhibit button.)
Average Jitter (Click the Exhibit button.)Maximum Jitter (Click the Exhibit button.)
Average Packet Loss (Click the Exhibit button.)
Maximum Consecutive Loss (Click the Exhibit button.)You need to provide recommendations based on the simulation results. What should you
recommend?
A. Implement Call Admission Control (CAC) on Lync for the affected sites.
B. Restrict video capability or reduce quality codec usage for certain user groups.
C. Increase WAN link bandwidth.
D. Monitor Quality of Experience (QoE).
Answer: C

QUESTION 8
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 use a
Multiprotocol Label Switching (MPLS) topology. On average, the company has 3 percent of its
users dialing in for conferences and 7 percent on a public switched telephone network (PSTN)
call at any time. The company plans to remove the PBXs and have all users use only Lync 2013.
The company also plans to migrate from an existing content sharing platform. You need to
generate a persona by using IP-based unified communication (UC) scenarios. Which three pieces
of information should you collect when you are defining a persona for the existing
communications? (Each correct answer presents part of the solution. Choose three.)
A. conference sessions
B. voice codec used
C. PSTN-to-PSTN sessions
D. peer-to-peer (P2P) sessions
E. content sharing
Answer: BDE

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