DEVRY NETW 320 Final Exam

DEVRY NETW 320 Final Exam

Question 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 counts

Question 3. 3. (TCO 2) Construct a 1.536 Mbps T1 link. (Points : 5)

       24 Channels

       32 Channels

       Fractional Channels

       CAS

Question 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, mixed

Question 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 route

Question 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.735

Question 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 power

1. (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

       802.4ab

Question 2. 2. (TCO 6) Identify the IEEE specifications that will support QoS on WLAN. (Points : 5)

       IEEE802.11e

       IEEE802.11a

       IEEE802.11b

       IEEE802.11g

Question 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 2004

Question 5. 5. (TCO 7) What protocol is commonly used to allow integration between the softphone and the corporate directory? (Points : 5)

       LDPD

       LPAD

       LAPD

       LDAP

Question 6. 6. (TCO 8) What do we call frames that are implemented with 802.1p? (Points : 5)

       Switched frames

       Tagged frames

       LAN frames

       Untagged frames

Question 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 ms

Question 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

       RTP

Question 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)