question

1. The Internet can transfer conventional data and voice data.

answer

T

question

2. It wasn't until the 1950s that POTS began carrying computer data signals as well as voice signals.

answer

F

question

3. Only two wires are required to complete a telephone circuit.

answer

T

question

4. A trunk has a unique telephone number associated with it.

answer

F

question

5. Subscriber loops usually transmit digital signals, which require amplifiers every few kilometers.

answer

F

question

6. Prior to 1984, AT (American Telephone and Telegraph) owned all the long-distance telephone lines in the United States.

answer

T

question

7. Telephone systems were originally designed to transmit the human voice.

answer

T

question

8. The more information you wish to send over a medium, the lower the frequency of the signal you need to represent that information.

answer

F

question

9. When they were originally introduced many years ago, dial-up modems were capable of data transfer speeds of merely 15 to 30 bits per second.

answer

F

question

10. A V.92 modem can place a data connection on hold should someone call the user's telephone number.

answer

T

question

11. An asymmetric service is useful for an Internet connection in which the bulk of the traffic comes down from the Internet to the workstation.

answer

T

question

12. Most residential DSL services are symmetric.

answer

F

question

13. There is only one DSL format in use today.

answer

F

question

14. A cable modem is a physical device that separates the computer data from the cable television video

answer

T

question

15. Cable modem connections are typically symmetric.

answer

F

question

16. The most popular example of a leased line service is the T-1.

answer

T

question

17. Quarter-T-1 and half-T-1 lines are called fractional T-1 services.

answer

T

question

18. The frame relay service can only be a long-distance service.

answer

F

question

19. Frame relay is called a layer 6 protocol.

answer

F

question

20. Typically, frame relay is a replacement for the leased lines that connect a business to other businesses or connect multiple offices of the same business.

answer

T

question

21. Local high-speed telephone connections are almost always less expensive than long-distance, high-speed telephone connections.

answer

T

question

22. The price of the PVC is inversely proportional to the CIR level.

answer

F

question

23. Frame relay was originally designed and used to transfer packets of data between two sites more cost effectively than leased lines could.

answer

T

question

24. ATM transfer rates are as fast as 311 Mbps.

answer

F

question

25. A real-time interactive application is one of the most demanding with respect to data transmission rate and network throughput.

answer

T

question

26. DSL and cable modems are more expensive than frame relay systems at comparable speeds.

answer

F

question

27. Convergence has had a particularly noticeable impact on the telecommunications market.

answer

T

question

28. ATM clearly dominates in the local area network arena.

answer

F

question

29. A company that wishes to have its own in-house telephone system will often buy or lease a PBX.

answer

T

question

30. Frame relay and ATM are losing market share to Internet services such as FTP and Telnet.

answer

F

question

1. The local loop commonly consists of either four or ____ wires. a. six c. nine b. eight d. ten

answer

b. eight

question

2. On the other end of the local loop is the local telephone company's ____. a. trunk c. central office b. interLATA d. intraLATA

answer

c. central office

question

3. As long as a telephone call remains within a LATA (a(n) ____ call), the telephone call is local and is handled by a local telephone company. a. intraLATA c. outerLATA b. extraLATA d. outLATA

answer

a. intraLATA

question

4. If the telephone call passes out of one LATA and into another (a(n) ____ call), the telephone call is long distance and must be handled by a long-distance telephone company. a. intraLATA c. inLATA b. innerLATA d. interLATA

answer

d. interLATA

question

5. The telephone network consists of two basic types of telephone lines: a subscriber loop, or standard telephone line, and a ____. a. trunk c. LATA b. CIR d. SONET

answer

a. trunk

question

6. After the 1984's Modified Final Judgment, the long-distance telephone companies became known as ____. a. local exchange carriers (LECs) c. interexchange carriers (IECs or IXCs) b. central office exchange service d. private branch exchange (PBXs)

answer

c. interexchange carriers (IECs or IXCs)

question

7. A(n) ____ is a service from local telephone companies in which up-to-date telephone facilities at the telephone company's central (local) office are offered to business users, so that they don't need to purchase their own facilities. a. local exchange carriers (LECs) c. interexchange carriers (IECs or IXCs) b. central office exchange service d. private branch exchange (PBXs)

answer

b. central office exchange service

question

8. A(n) ____ handles all in-house calls and places calls onto outside telephone lines. a. local exchange carriers (LECs) c. interexchange carriers (IECs or IXCs) b. local access transport area (LATA) d. private branch exchange (PBXs)

answer

d. private branch exchange (PBXs)

question

9. ____ are permanent direct connections between two specified points. a. Tie lines c. Centrex b. PBXs d. IPX

answer

a. Tie lines

question

10. The Telecommunications Act of 1996 mandated that the existing local telephone companies, now called ____, must give CLECs access to their telephone lines. a. private Branch Exchange (PBX) b. Centrex (central office exchange service) c. incumbent local exchange carriers (ILECs) d. interexchange carriers (IECs)

answer

c. incumbent local exchange carriers (ILECs)

question

11. The ____ standard is a 56,000-bps dial-up modem standard approved by a standards-making organization rather than a single company. a. R.56 c. 802.11Q b. V.90 d. 803.1

answer

b. V.90

question

12. A(n) ____ connection is one in which the transfer speeds in both directions are equal. a. symmetric c. static b. asymmetric d. dynamic

answer

a. symmetric

question

13. A(n) ____ connection has a faster downstream transmission speed than its upstream speed. a. symmetric c. asymmetric b. static d. dynamic

answer

c. asymmetric

question

14. Because DSL is an always-on connection, it uses a ____ circuit instead of a switched circuit. a. changing c. virtual b. dynamic d. permanent

answer

d. permanent

question

15. When no splitter is used to separate the DSL signal from the POTS signal, then the service is called ____. a. asymmetric DSL c. symmetric DSL b. splitterless DSL d. POTSless DSL

answer

b. splitterless DSL

question

16. Digital subscriber line comes in a variety of formats. Often collectively referred to as ____. a. ADSL c. SDSL b. CDSL d. xDSL

answer

d. xDSL

question

17. ____ is a popular format that transmits the downstream data at a faster rate than the upstream rate. a. Asymmetric digital subscriber line (ADSL) b. Consumer DSL (CDSL) c. DSL Lite d. High bit-rate DSL (HDSL)

answer

a. Asymmetric digital subscriber line (ADSL)

question

18. ____ is a trademarked version of DSL with speeds that are a little slower than typical ADSL speeds. a. Asymmetric digital subscriber line (ADSL) b. DSL Lite c. Consumer DSL (CDSL) d. High bit-rate DSL (HDSL)

answer

b. DSL Lite

question

19. ____ is the earliest form of DSL. a. DSL Lite c. Very high data rate DSL (VDSL) b. High bit-rate DSL (HDSL) d. Rate-adaptive DSL (RADSL)

answer

b. High bit-rate DSL (HDSL)

question

20. ____ is a format in which the transfer rate can vary, depending on noise levels within the telephone line's local loop. a. DSL Lite c. Very high data rate DSL (VDSL) b. High bit-rate DSL (HDSL) d. Rate-adaptive DSL (RADSL)

answer

d. Rate-adaptive DSL (RADSL)

question

21. A ____ service is an all-digital connection that can transfer either voice or data at speeds up to 1.544 Mbps. a. T-1 c. T-3 b. T-2 d. T-4

answer

a. T-1

question

22. ____ is a packet-switched network that was designed for transmitting data over fixed lines. a. T-1 c. Frame relay b. IntraLATA d. InterLATA

answer

c. Frame relay

question

23. The designation layer ____ protocol means that frame relay technology is only one part of a network application and resides at the data link layer. a. 2 c. 4 b. 3 d. 6

answer

a. 2

question

24. When a customer establishes a permanent virtual circuit with a frame relay carrier, both customer and carrier agree on a data transfer rate called the ____. a. bit rate c. committed information rate (CIR) b. PVC rate d. LATA rate

answer

c. committed information rate (CIR)

question

25. The ____ allows the customer to exceed the committed information rate by a fixed amount for brief moments of time. a. bit rate c. committed information rate (CIR) b. burst rate d. LATA rate

answer

b. burst rate

question

26. Before ATM can transfer any data, you must first create a logical connection called a ____. a. virtual path connection (VPC) c. network-network interface b. virtual channel connection (VCC) d. network-user interface

answer

b. virtual channel connection (VCC

question

27. A ____ is a bundle of VCCs that have the same endpoints. a. virtual path connection (VPC) c. network-network interface b. virtual interface connection (VIC) d. network-user interface

answer

a. virtual path connection (VPC)

question

28. When a VCC transmits network management and routing signals, it is called the ____. a. virtual path connection (VPC) c. network-network interface b. virtual interface connection (VIC) d. network-user interface

answer

c. network-network interface

question

29. ____ is the most expensive ATM class of service. a. Variable bit rate (VBR) c. Unspecified bit rate (UBR) b. Available bit rate (ABR) d. Constant bit rate (CBR)

answer

d. Constant bit rate (CBR)

question

30. ____ applications often send bursts of data, and the ATM network guarantees that its traffic is delivered on time. a. Variable bit rate (VBR) c. Unspecified bit rate (UBR) b. Available bit rate (ABR) d. Constant bit rate (CBR)

answer

a. Variable bit rate (VBR)

question

31. ____ is capable of sending traffic that may experience bursts of data, but there are no promises as to when the data may be sent. a. Variable bit rate (VBR) c. Unspecified bit rate (UBR) b. Available bit rate (ABR) d. Constant bit rate (CBR)

answer

c. Unspecified bit rate

question

32. ____ means that users utilize a single desktop application to send and receive e-mail, voice mail, and fax. a. Interactive voice response c. Fax processing b. Unified messaging d. Third-party call control

answer

b. Unified messaging

question

33. ____ means that a user calling into a company telephone system provides some form of data by speaking into the telephone, and a database query is performed using this spoken information. a. Third-party call control b. Unified messaging c. Fax-back d. Integrated voice recognition and response

answer

d. Integrated voice recognition and response

question

34. In ____, a fax image that is stored on a LAN server's hard disk can be downloaded over a local area network, converted by a fax card, and sent out to a customer over a trunk. a. third-party call control c. fax processing b. unified messaging d. integrated voice recognition and response

answer

c. fax processing

question

35. ____ means that users have the ability to control a call—for example, set up a conference call—without being a part of it. a. Third-party call control b. Unified messaging c. Fax-back d. Integrated voice recognition and response

answer

a. Third-party call control

question

36. ____ means that different icons on a computer screen represent common PBX functions such as call hold, call transfer, and call conferencing, making the system easier for operators to use. a. Third-party call control c. Fax-back b. PBX graphic user interface d. Call filtering

answer

b. PBX graphic user interface

question

37. ____ means that users can specify telephone numbers that are allowed to get through. a. PBX graphic user interface c. Fax-back b. Customized menuing system d. Call filtering

answer

d. Call filtering

question

38. MPLS and VPNs continue to replace which long-distance data services? a. Google and Yahoo c. frame relay and ATM b. Telnet and FTP d. frame relay and FTP

answer

c. frame relay and ATM

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