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TIA TT0-201 Exam
Convergence Technologies Professional 2007 (Page 3 )

Updated On: 30-Jan-2026
Page 3 of 40
PDF with 260 Questions

What occurs if you change the sample size in a codec so that it is too small for your particular needs?

  1. Voice quality will suffer, because of increased frame sizes.
  2. Voice quality will suffer, because a codec mismatch is more likely to occur.
  3. Voice quality will suffer, because IP overhead will increase.
  4. Voice quality will suffer, because the jitter buffer will be ignored.

Answer(s): C



An IP router has been configured as follows:
Interface 1: 192.167.2.0y24lnterface2: 10.100.100.0/24
An IP PBX resides on the 192.167.2.0 network. The 10.100.100.0 network contains several IP phones. Each phone is configured as follows:

The IP phones can communicate with each other, but not with the router. You cannot ping the IP phones from any systems that connect to interface 1, either by DNS name or by IP address.

Which of the following best describes the problem?

  1. QoS has not been enabled on this particular VLAN.
  2. The DNS server address is invalid.
  3. The IP phones are configured with an incorrect subnet mask.
  4. The IP phones are not on the same VLAN as the IP PBX.

Answer(s): C



What impact does the 3-bit user priority field found in an 802.1 q frame have to help voice quality in LAN-based communications?

  1. It establishes classes of service on the LAN.
  2. It allows DiffServ services to be established.
  3. It modifies the Type of Service (ToS) field in the IP header and establishes QoS.
  4. It establishes the technical foundation for a Service Level Agreement (SLA).

Answer(s): A



Which of the following standards does the H.225 standard specify for the sending and receiving of cal signaling messages?

  1. I.430
  2. HDLC
  3. Q.931
  4. Q.932

Answer(s): C



You are attaching a network to an ISDN PRI line. Which channel carries signaling and control information?

  1. C channel.
  2. B channel.
  3. E channel.
  4. D channel.

Answer(s): D



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