The Internet Answer Key 12-38 Questions

12. A __________ separates traditional voice telephone transmission from the data transmissions in the equipment located at the customer site for DSL. a. b. c. d. e. line splitter V.32bis modem line analyzer main distribution frame network access point Answer: a 13. Data traffic from the DSL customer premises is sent to a __________, which is located at the local carrier’s end office. a. b. c. d. e. modem codec DSLAM NIC ATM Answer: c 14. The _________ is the connection from a home or business to the telephone company end office. a. b. c. d. e. distribution hub RFC UCAID local loop CA*net 3 Answer: d 15. A DSL modem is also known as a: a. b. c. d. e. DSL bridge DSL switch DSL router DSL gateway DSL hub Answer: c 16. At the DSL local carrier’s office, the __________ demultiplexes the data streams and converts them into digital data. a. b. c. d. e. DSLAM GrandSlam WAP line splitter X.25 PAD Answer: a 17. Peering has led to the emergence of a new organization type called the _______, which permits any ISP to connect to its network. a. b. c. d. e. gigapop autonomous system ISP IXP Service provider Answer: d 18. At the DSL customer premises is a device called a(n) a. b. c. d. e. cable modem DSLAM DSL modem Internet router DSL bridge Answer: c 19. Which of the following statements is true in regards to DSL? a. b. c. d. e. On a circuit, the shorter the distance, the higher the speed. On a circuit, the longer the distance, the higher the speed. On a circuit, the longer the distance, less attenuation occurs. On a circuit, the shorter the distance, more attenuation occurs. When more attenuation occurs, higher frequency signals can be used effectively. Answer: a 20. A digital service offered by cable companies is the _________. a. b. c. d. e. Abilene network WAP proxy G.Lite ADSL cable modem Next Generation Internet Answer: d 21. Another term for cable networks that use both fiber-optic and coaxial cable is __________. a. b. c. d. e. fixed wireless mobile wireless distribution hub hybrid fiber coax fibrax Answer: d 22. A T1 level of ADSL has a maximum downstream rate of about _________ Mbps. a. b. c. d. e. 9000 8.4 1.5 650 6.1 Answer: c 23. A cable company headend is also referred to as a: a. b. c. d. e. Abilene network WAP proxy cable modem distribution hub fiber node Answer: d 24. In a DSL environment, local loops from many customers enter and are connected to the _____. a. b. c. d. e. central office computer center main central office main distribution facility rack Answer: d 25. A(n) __________ is used to connect a fiber optic cable from the cable TV company side to a coaxial cable on the customer side. a. b. c. d. e. CA*net 3 RFC WAP proxy fixed wireless connection optical-electrical converter Answer: e 26. A(n) ___________ contains a series of cable modems/multiplexers and converts the data from cable modem protocols into protocols needed for Internet traffic, before passing them to a router connected to an ISP POP. a. b. c. d. e. Internet steering system optical-electrical converter WAP proxy cable modem termination system fixed wireless system Answer: d 27. In a cable modem environment, a _______ is used to combine Internet data traffic with ordinary TV video traffic and then send it back to the fiber node for distribution. a. b. c. d. e. modem router bridge combiner CMTS Answer: d 28. Fiber to the Home uses _____. a. b. c. d. e. frequency division multiplexing wavelength division multiplexing time division multiplexing statistical time division multiplexing all of the above Answer: b 29. The closest the Internet has to an “owning” organization is the ___________. a. b. c. d. e. Internet Service Provider Abilene network CA*Net3 University Corporation for Advanced Internet Development Internet Society Answer: e 30. Which of the following is not part of the work of the Internet Society? a. b. c. d. e. public policy connecting optical-electrical converters education development of Internet standards maintenance of Internet standards Answer: b 31. The ________ is a large open international community of network designers, operators, vendors, and researchers concerned with the evolution of the Internet architecture and smooth operation of the Internet. a. b. c. d. e. Internet Society Internet Engineering Task Force Internet Engineering Steering Committee Internet Architecture Board Internet Research Task Force Answer: b 32. The ___________ is responsible for technical management of IETF and the Internet standards process. a. b. c. d. e. Internet Society University Corporation for Advanced Internet Development Internet Engineering Steering Committee Internet Architecture Board Internet Research Task Force Answer: c 33. The _________operates like the IETF through small research groups focused on specific issues. a. b. c. d. e. Internet Society University Corporation for Advanced Internet Development Internet Engineering Steering Committee Internet Architecture Board Internet Research Task Force Answer: e 34. In 1996, The National Science foundation provided $100 million to start the ___________ program to develop the very-high-performance Backbone Network Service. a. b. c. d. e. CA*Net3 UCAID Next Generation Internet Internet 3 WAP proxy Answer: c 35. Which of the following new Internet efforts was started by 34 universities? a. b. c. d. e. CA*net 3 ARDNOC vBNS NGI Internet2 Answer: e 36. A high-speed Internet has a set of access points called ____pops that provide pointof-presence at ________ speeds. a. b. c. d. e. giga, gigabit mega, megabit multi, multibit giga, megabit multi, gigabit Answer: a 37. Some of the new applications being developed for a high-speed Internet include a. b. c. d. e. Tele-immersion Tele-conferencing QoS Broadband Tele-phoning Answer: a 38. Internet2® is an organization of about _____ universities, corporations, government agencies, and organizations. a. b. c. d. 100 250 400 750 Answer: c