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TIA TT0-201 Exam
Convergence Technologies Professional 2007 (Page 2 )

Updated On: 30-Jan-2026
Page 2 of 40
PDF with 260 Questions

Which of the following is a potential drawback of using private IP addresses for SIP-based voice and video communications?

  1. Devices using private IP addresses cannot receive SIP registrations.
  2. The need for Network Address Translation (NAT).
  3. Internet routers are not able to forward private IP addresses.
  4. The need for a Dynamic Host Configuration Protocol (DHCP) server.

Answer(s): B



You are having problems determining connectivity between an IP phone and the SIP proxy device.
You have placed your notebook computer on the same LAN as the IP phones. However, you cannot use ping ortraceroute from your laptop to determine if the SIP proxy is running. You can access other services, including the Internet. You have tried specifying both the host name and the IP address while using traceroute. Both applications appear to hang when used. What conclusions can you safely draw from this information?

  1. The switches between the SIP phone and the gatekeeper are not functioning.
  2. The routers between the SIP phone and the gatekeeper are not functioning.
  3. The DHCP server is not functioning, resulting in a situation where the firewall and other IPaddressable devices are not able to respond to packets.
  4. The routers or firewalls between the SIP and the gatekeeper are blocking packets used by
    traceroute and ping.

Answer(s): D



Which of the following is a concern when implementing IPsec for SIP-based voice calls behind a firewall that implements Network Address Translation (NAT)?

  1. You must implement tunnel mode using the AH security protocol.
  2. IPsec doesnl natively support SIP.
  3. You must implement transport mode using the AH security protocol.
  4. Encryption causes increased overhead.

Answer(s): D



Which of the following features is commonly provided in an IP-based PBX, but not in a traditional PBX?

  1. Quality of Service (QoS).
  2. Soft phone support.
  3. Signal monitoring.
  4. DTMF phone support.

Answer(s): B



You wish to connect a PBX made by one manufacturer to another. You wish to ensure that these interconnected PBXs will retain their basic and supplementary services. Which of the following protocols allows you to do this?

  1. H.450
  2. Q.932
  3. H.225
  4. QSIG

Answer(s): D



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