2013 Latest DESGN (640-864) Exams 106-110

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QUESTION 106
Which information should a network summary report identify?
A. actions needed to support the existing network
B. customer requirements
C. new network features
D. customer requirement modifications
E. actions needed to support existing network features
F. infrastructure shortcomings
Correct Answer: F
Section: Design Explanation

QUESTION 107
Given a VoIP network with these attributes:
Codec: G.711 WAN bandwidth: 768Kbps Packet Header: 6 bytes Payload: 160 bytes CRTP: No
How many calls can be made?
A. 7 calls
B. 13 calls
C. 8 calls
D. 9 calls
E. 11 calls
Correct Answer: E
Section: Voice Video Explanation
Codecs
Because speech is an analog signal, it must be converted into digital signals for transmission over digital systems. The first basic modulation and coding technique was pulse-code modulation (PCM). The international standard for PCM is G.711. With PCM, analog speech is sampled 8000 times a second. Each speech sample is mapped onto 8 bits. Thus, PCM produces (8000 samples per second) * (8 bits per sample) = 64, 000 bits per second = 64-kbps coded bit rate. Other coding schemes have been developed to further compress the data representation of speech. G.711 is used as the primary with IPT over LANs where high bandwidth is available.
G.711 = 64Kbps Packet Header = 6 bytes Payload = 160 bytes Total = 64166 bytes or 64.166 Kbps per call 768 Kbps / 64.166 Kbps = 11.96 Therefore 11 Calls can be supported
Cisco Press CCDA 640-864 Official Certification Guide Fourth Edition, Chapter 6

QUESTION 108
What are three valid methods of gathering information about an existing data network? (Choose three.)
A. Use organizational input.
B. Analyze the user-mapping of a running application.
C. Perform a traffic analysis.
D. Perform a packet-level audit to verify carrier service guarantees.
E. Use reports that analyze the metrics of the customer’s existing network.
F. Perform a network audit to gather more detail about the network. Correct Answer: CEF
Section: Design Explanation

Table, Characterizing the Network

Cisco Press CCDA 640-864 Official Certification Guide Fourth Edition, Chapter 1 (Page 23)

QUESTION 109
Which two of these are required for wireless client mobility deployment when using a Cisco Unified Wireless Network? (Choose two.)
A. matching RF power
B. matching security
C. assigned master controller
D. matching mobility group name
E. matching RF channel
F. matching RF group name
Correct Answer: BD
Section: Wireless Explanation

QUESTION 110
In the Cisco branch office design, what categorizes an office as large?
A. between 50 and 100 users and a single-tier design
B. between 100 and 200 users and a three-tier design
C. between 50 and 100 users and a three-tier design
D. over 200 users and a two-tier design
E. between 100 and 200 users and a two-tier design
Correct Answer: B
Section: Design Explanation

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