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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)

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