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1. Which type of signaling is DTMF?

   1.   ?    Supervisory
   2.   ?    Route
   3.   ?    Informational
   4.   ?    Address

2. On the MOS scale, what does a 5 represent?

   1.   ?    poor
   2.   ?    fair
   3.   ?    average
   4.   ?    excellent

3. Which three are supervisory signals? (Choose three)

   1.   ?    busy
   2.   ?    on hook
   3.   ?    off hook
   4.   ?    on balance

4. What type of signalling is used for a circuit transmitted within the same channel as the voice?

   1.   ?    PCM
   2.   ?    SS7 Signalling
   3.   ?    In-line Signalling
   4.   ?    Channel Associated Signalling

5. What is the E.164 numbering plan?

   1.   ?    A proprietary PBX number plan.
   2.   ?    The IETF North American number plan.
   3.   ?    The European PBX standard telephony number plan.
   4.   ?    The ITU worldwide number plan.

6. You are the network engineer at CertKing .com. CertKing has its headquarters in New York and branch offices in Delaware, Detroit and Denver. CertKing has a traditional time-division multiplexing (TDM) based network with automated call distribution (ACD) private branch exchanges (PBX) and desktop systems. You want to add an IP telephony solution to the CertKing network. What will enable server and agent-level IP telephony to coexist with the existing network?

   1.   ?    IPCC
   2.   ?    XLD-t
   3.   ?    PBX-R
   4.   ?    Cisco works

7. Which will provide your IP Phones with an IP Address?

   1.   ?    The technician, it has to be statically assigned.
   2.   ?    Any DHCP server
   3.   ?    The Cisco CallManager DHCP snap-in with CiscoWorks.
   4.   ?    IP Phones do not need an IP address.

8. Which organization approved the H.323 standard?

   1.   ?    ITEF
   2.   ?    ITU
   3.   ?    IEEE
   4.   ?    FEMA

9. Which are three required steps in digitizing voice? (Choose two)
   

   1.   ?    Companding the signal.
   2.   ?    Quantizing the amplitude.
   3.   ?    Filtering the signal.
   4.   ?    Sampling the soundwave.

10. You are the VoIP engineer at CertKing .com. A CertKing user complains that she gets a busy tone instead of a dial tone when she tries to call another user. You want to troubleshoot this problem. What command should you use?
    

    1.   ?    show voice dsp
    2.   ?    show voice path
    3.   ?    show voice connection
    4.   ?    show voice port summary