IST 166 Chapter 14 Practice Quiz Question 1 Which statement regarding the use of cable modems is NOT accurate? Answer: Cable modems only operate at the Physical layer of the OSI model. Question 2 The C-Band utilized by satellites consists of what frequency range? Answer: 3.4 - 6.7 GHz Question 3 Which type of DSL technology has equal download and upload speeds maxing out at around 2 Mbps? Answer: SDSL Question 4 Which of the following Layer 1 WAN technologies is not normally used as last mile service but rather traverses multiple ISP networks connecting these networks to the Internet backbone? Answer: SONET (Synchronous Optical Network) Question 5 When using DOCSIS 3.0 what is the minimum number of channels that can be used? Answer: 4 Question 6 Which of the following is an advantage of leasing a frame relay circuit over leasing a dedicated circuit? Answer: You pay only for the bandwidth you require. Question 7 In a public switched telephone network what portion of the network is known as the local loop? Answer: It is the portion that connects any residence or business to the nearest central office. Question 8 What is a data-link connection identifier (DLCI)? Answer: It is used by routers to determine which circuit to forward a frame to in a frame relay network. Question 9 In metro settings end-to-end carrier-grade Ethernet networks can be established via what protocol? Answer: Carrier Ethernet Transport Question 10 What type of virtual circuit allows connections to be established when parties need to transmit then terminated after the transmission is complete? Answer: switched virtual circuit (SVC)

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