95 4. 5. 6, Practice 12.4 Match the ATM data transfer classification to its definition 1. ABR Automatically adjust the cell rute to support 2. time-sensitive data CER b. Moves a steady stream of ATM cells at 3. UHR predictable rate VER c. Moves celle at a variable rate, the rate of which depends on the type of data contained in each cell VBR-NRT d. Moves cells at a variable rate depending on the VBR-KT cell's contents to support real-time audio and video transfers e. Most appropriate for file transfer f Does not guarantee any speed or meet requirements of any special application such as multimedia or telephony Practice 12.5 For each of the following select the word that best completes the sentence. Terms may be used more than once. bandwidth shaper H.323 hard phone Quality of Service (QoS) Real-time Transport Protocol (RTP) Session Initiation Protocol (SIP) soft phone telephone gateway 1. A(n) is a specialized plece of equipment that connects a packet-style network communication system to a telephone system using the protoco 2. The standard is an older telecommunication standard for audio, video, data communications using IP or packet-type networks defined by the International Telecommunication Union (ITU). 3. A{n) is used to prioritize network packets to ensure quality of service fe time-sensitive applications such as VoIP. 4. The standard and protocol for initiating, maintaining and terminating the exchange of voice, multimec gaming, chat, and more is called 5. The does not carry the data, but rather establishes and maintains the session until the session is terminated. 6. A(n). is a physical telephonic device, and a(n) is a virtual telephonic device. 7. The is a standard and a protocol used to stream voice and video in 8. The protocol gives time-sensitive packets, such as those carrying conversations, a higher priority than data packets