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QuestionQ448

Concepts of TCP/IP and the Link Layer

You are a Network Administrator for Tech Perfect Inc. The company operates a TCP/IP-based network.

A branch office is connected to headquarters by a T1 line. Branch-office users report poor voice quality on IP phones when communicating with headquarters. You determine that an application named WorkReport at the branch office is saturating bandwidth by sending large packets for file synchronization.

You need to improve the IP-phone voice quality. Which of the following steps should you choose to accomplish this?

  • A Configure traffic shaping to increase the time interval for the WorkReport packets.
  • B Configure traffic shaping to increase the time interval for the IP phone packets.
  • C Configure traffic shaping to reduce bandwidth for the IP phone.
  • D Configure traffic shaping to reduce bandwidth for WorkReport.
Explanation

Traffic shaping can delay and pace excess packets from a specified traffic flow. The mean transmission rate is determined by burst size divided by the time interval; increasing the interval for WorkReport lowers its average rate, reducing congestion on the T1 line and preserving bandwidth for delay-sensitive voice traffic. Cisco: Regulating Packet Flow Using Traffic Shaping

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