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DEVRY NETW 320 Final ExamQuestion 1. 1. (TCO 1) Identify the merger of legacy-based TDM architecture with packet-switching technology and call-control intelligence. (Points : 5)        Telecommunication convergence       Analog convergence       Digital convergence       DSL and cable telecommunication convergence Question 2. 2. (TCO 1) Choose the mechanism(s) for sending RAS messages using RAS channel over UDP. (Points : 5)        Retry counts       Timeout       Timeout and retry counts       Timeout, TTL, and retry countsQuestion 3. 3. (TCO 2) Construct a 1.536 Mbps T1 link. (Points : 5)        24 Channels       32 Channels       Fractional Channels       CASQuestion 4. 4. (TCO 2) Identify how IP telephones access their media controllers. (Points : 5)        IP telephones access their media controllers through a hub.       IP telephones access their media controllers through a bridge.       IP telephones access their media controllers through a switched bridge.       IP telephones access their media controllers through a switched IP connection.Question 5. 5. (TCO 3) An MCU may control three different conference types; please identify them. (Points : 5)        Centralized, decentralized, mobile       Mobile, centralized, decentralized       Centralized, mobile, decentralized       Centralized, decentralized, mixedQuestion 6. 6. (TCO 3) Identify the cause of packet delay. (Points : 5)        It is not the time it takes a packet to traverse the network.       It is the time it takes a packet to traverse a router.       It is the time it takes a packet to traverse the network.       It is the time it takes a packet to traverse a switch.Question 7. 7. (TCO 4) Which of the following characteristics are not common to circuit-switched networks? (Points : 5)        Store and forward transmission       Dedicated bandwidth       Potentially wasted bandwidth       Each packet follows the same routeQuestion 8. 8. (TCO 4) Explain why G.711 is used in LANs. (Points : 5)        There is quite a bit of bandwidth in a LAN and it is not expensive.       There is not much bandwidth in a LAN and it is not expensive.       There is quite a bit of bandwidth in a LAN and it is expensive.       There is not much bandwidth in a LAN and it is expensive.Question 9. 9. (TCO 4) Select the codec that is most appropriate for limited bandwidth WANs. (Points : 5)        G.711       G.741       G.729       G.735Question 10. 10. (TCO 5) Describe the three main ways of powering an IP telephone. (Points : 5)        Local power, powered AC patch panels, inline power       Local AC power, powered patch panels, inline power       Local power, powered patch panels, online power       Local power, powered patch panels, inline power1. (TCO 5) Select the IEEE standard that defines the application of power to IP telephones through the UTP wiring. (Points : 5)        802.3af       802.11       802.13       802.4abQuestion 2. 2. (TCO 6) Identify the IEEE specifications that will support QoS on WLAN. (Points : 5)        IEEE802.11e       IEEE802.11a       IEEE802.11b       IEEE802.11gQuestion 3. 3. (TCO 6) Identify a very weak encryption system that is sometimes used in wireless networks. (Points : 5)        WAP       TKIP       WEP       AES  Question 4. 4. (TCO 7) Identify the document that specifies the requirements for mobile node to use two IP addresses. (Points : 5)        RFC 2001       RFC 2003       RFC 2002       RFC 2004Question 5. 5. (TCO 7) What protocol is commonly used to allow integration between the softphone and the corporate directory? (Points : 5)        LDPD       LPAD       LAPD       LDAPQuestion 6. 6. (TCO 8) What do we call frames that are implemented with 802.1p? (Points : 5)        Switched frames       Tagged frames       LAN frames       Untagged framesQuestion 7. 7. (TCO 8) What is the maximum delay that is considered acceptable for voice traffic? (Points : 5)        250 ms       300 ms       100 ms       150 msQuestion 8. 8. (TCO 9) Identify the function of an SIP User Agent. (Points : 5)        An SIP User Agent places calls using IP address or e-mail-like addressing.       An SIP User Agent places calls using E.164 or IP address.       An SIP User Agent places calls using neither E.164 nor e-mail-like addressing.       An SIP User Agent places calls using E.164 or e-mail-like style. Question 9. 9. (TCO 3) SNMP uses the ______ protocol to the Transport Layer. (Points : 5)        TCP       UDP       MIB       RTPQuestion 10. 10. (TCO 5) TKIP provides a ______solution to the problems found in WEP. (Points : 5)        worse       add-on       interim       permanent  1. (TCO 1) Explain five different common applications for unified messaging. (Points : 30)Question 2. 2. (TCO 2) Describe the purpose of a Multipoint Conferencing Unit (MCU). (Points : 30)Question 3. 3. (TCO 7) Describe jitter in a network. (Points : 30)       Question 4. 4. (TCO 8) Explain the function of communications protocols. (Points : 30)Question 5. 5. (TCO 9) Explain the DiffServ objective. (Points : 30)     
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