DeVry NETW 590 Final Exam Latest

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DeVry NETW 590 Final Exam Latest

Question 1 5 pts

(TCO A) SS7 _____.

sets up and terminates calls

is prone to tampering because of its in-band arrangement

is the seventh special software upgrade to the national phone system

uses the same path that is used for voice traffic

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Question 2 5 pts

(TCO A) Copper lines from a residence to a CO are used to _____.

Create circuit branches

archive historical call information

carry simultaneous calls using TDM

connect local calls

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Question 3 5 pts

(TCO B) Which of the following is NOT a category of speech coding?

Waveform codecs

Multirate codecs

Hyperthreaded codecs

Source coding

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Question 4 5 pts

(TCO B) In the PSTN system, voice is _____.

digitized via a codec, but not packetized (A)

analog only (B)

packetized (C)

Both A and C

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Question 5 5 pts

(TCO C) The three main components of SIP include all of the following, except _____.

the UA

the SIP Registrar

the SDP

the SIP Proxy Server

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Question 6 5 pts

(TCO D) A CDN _____.

is responsible for generating and delivering content (A)

uses only MPLS/ATM (B)

handles load balancing and latency minimization (C)

Both A and C

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Question 7 5 pts

(TCO D) The two major functions often offloaded onto an overlay network include _____.

virtual and physical

control and data plane

secure and public

private and interstitial

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Question 8 5 pts

(TCO E) The percent of power drain related to IEEE 802.11 wireless support in NIC cards is _____.

similar to the power drain associated with a wired network

approximately twice the amount incurred by a wired network

10% or less

30%

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Question 9 5 pts

(TCO E) The IEEE Medium Access Control _____.

defines the method for accessing a shared wireless channel

allows multiple stations to transmit without interfering with each other

is referred to as a DCF

All of the above

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Question 10 5 pts

(TCO F) Some of the advantages to operators afforded by IMS include _____.

providing levels of QoS and charge for it

supporting users inside and outside the operator-specific network

allowing network operators to deliver services to mobile subscribers

All of the above

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Question 11 5 pts

(TCO F) The IMS architecture was extended by _____.

3GPP

ETSI

TISPAN

EITF

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Question 12 5 pts

(TCO G) SIP and the H.323 standard _____.

are two ways of saying the same thing

are both IETF standards

are both simple protocols focused only on establishing sessions

None of the above

Question 13 30 pts

(TCO A) What are the architectural differences between the Internet and the PSTN?

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Question 14 30 pts

(TCO B) What is the purpose of a codec? What is the advantage/disadvantage of using a G.711 vs. G.726 for encoding voice?

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Question 15 30 pts

(TCO C) What is the purpose of the Media Gateway Control protocol?

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Question 16 30 pts

(TCO D) Your company has a large data network and is currently using a phone service from a local phone company for telecommunications. Would you recommend switching to an IP PBX? Why or why not?

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Question 17 30 pts

(TCO E) What are some of the reasons cable companies are interested in VoIP?

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Question 18 30 pts

(TCO F) What are the strategic advantages for an ISP to offer VoIP services? What investments would be needed to get into this new business?

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Question 19 30 pts

(TCO G) What is the difference between a hybrid IP Telephony/VoIP architecture and pure IP Telephony/VoIP architecture?

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Question 20 30 pts

(TCO H) What are the three domains of the 3G mobile system network? How does IMS differ from the packet-switched domain?

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DeVry NETW 590 Final Exam Latest

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DeVry NETW 590 Final Exam Latest