This device combines multiple circuits at one end of a connection into a single complex circuit on a single wire. The signal is then split into the individual connections on the other end.

1. (p. 382) This device combines multiple circuits at one end of a connection into a single complex circuit on a single wire. The signal is then split into the individual connections on the other end.
A. bridged connection
B. multiplexer
C. modulator-demodulator (modem)
D. terminal adapter (ta)

2. (p. 384) Multiplexers used this technology to keep individual calls separate.
A. Asynchronous Transfer Mode (ATM)
B. Session Initiation Protocol (SIP)
C. bridge connections
D. Frequency Division Multiplexing

3. (p. 387) Which of the following is the digital signal to which a central office converts analog voice signals before sending them across trunk lines?
A. DS0
B. DS1
C. DS2
D. DS3

4. (p. 387) What device converts an analog signal to digital and a digital signal to analog?
A. multiplexer
B. modulator
C. modulator-demodulator
D. demodulator

5. (p. 387) How many copper wires are used by a T1 line?
A. 1-pair
B. 4-pair
C. 2-pair
D. 3-pair

6. (p. 388) What device connects to each end of a T1 connection?
A. modem
B. dedicated line
C. multiplexer
D. CSU/DSU

7. (p. 388) What is the T1 signaling method?
A. DS0
B. DS1
C. DS2
D. DS3

8. (p. 388) The frame for this signaling method has a framing bit, plus 24 channels, each holding a single 8-bit data sample.
A. DS0
B. DS1
C. DS2
D. DS3

9. (p. 388) What is the data transfer speed for DS1?
A. 1.544 Mbps
B. 2.048 Mbps
C. 43 Mbps
D. 34.368 Mbps

10. (p. 388) How many channels are in a T1 bundle?
A. 64
B. 24
C. 32
D. 16

11. (p. 390) What is the European counterpart to a T1 line?
A. T3
B. E3
C. DS3
D. E1

12. (p. 390) What is the total bandwidth of an E3 line?
A. 1.544 Mbps
B. 2.048 Mbps
C. 43 Mbps
D. 34.368 Mbps

13. (p. 391) What is the speed of the low end of the Optical Carrier (OC) specification, OC-1?
A. 51.8 Mbps
B. 39.8 Gbps
C. 43 Mbps
D. 34.368 Mbps

14. (p. 392) What packet-switching standard designed for and used primarily with T-carrier lines is very fast, but does not guarantee data integrity?
A. ATM
B. Frame Relay
C. TCP/IP
D. Multi-Protocol Label Switching (MPLS)

15. (p. 392-393) Worldwide, most voice and data SONET rings use this cell-based packet-switching standard.
A. ATM
B. Frame Relay
C. TCP/IP
D. Multi-Protocol Label Switching (MPLS)

16. (p. 396) Which of the following are the devices on the customer's side of a WAN connection to a building, not including the actual connection point? (Select all that apply.)
A. CSU/DSU
B. modem
C. multiplexer
D. router
E. both A and D

17. (p. 396) What test should a network administrator know how to run on a CSU/DSU to test a WAN connection?
A. time division multiplexing
B. BERT
C. PRI
D. baud rate

18. (p. 397) Which of the following common terms describe a regular phone line designed to work only with analog sound and that uses an RJ-11 connector? (Select all that apply.)
A. ISDN
B. dedicated line
C. PSTN
D. POTS
E. Both C and D

19. (p. 398) What device converts 8-bit-wide parallel data from a computer into 1-bit-wide serial data to send to a modem where it is converted to an analog signal before being sent over phone lines?
A. CSU/DSU
B. UART
C. DSL modem
D. multiplexer

20. (p. 399) What is the current V standard for modems?
A. V.90
B. V.42bis
C. V.92
D. MNP5

21. (p. 401) When you configure an ISDN terminal adapter (TA), you must enter the telephone number for the other end of the ISDN connection, as well as this special number, provided by the telephone company.
A. default gateway
B. DS0
C. Service Profile ID (SPID)
D. Basic Service Service Set Identifier (BSID)

22. (p. 401) An ISDN PRI setup consists of which of the following?
A. 2 D channels and one B channel
B. 23 B channels over T1
C. 2 B channels and one D channel
D. 23 DS0 channels over T1

23. (p. 401) Which of the following are versions of DSL service? (Select all that apply.)
A. xDSL
B. SDSL
C. VDSL
D. ADSL
E. B, C, and D

24. (p. 403) Which of the following is the DSL device that is located in a central office, connecting multiple DSL customers to the Internet?
A. UART
B. CSU/DSU
C. NIU
D. DSLAM

25. (p. 402) What is the maximum distance between a user's demarc and the central office for all versions of DSL?
A. 18,000 feet
B. 3,000 yards
C. 5 miles
D. 3.4 kilometers

26. (p. 403) In a DSL connection, what device is used between your computer (or router) and the wall jack?
A. CSU/DSU
B. DSL modem
C. multiplexer
D. router

27. (p. 405) If you have cable Internet service, what protocol is used between the head end connection and the cable company's network?
A. TCP/IP
B. H.323
C. DOCSIS
D. DSLAM

28. (p. 409) This type of connection is always used for dial-up.
A. PPPoE
B. DHCP
C. PPP
D. PPTP

29. (p. 414) Which of the following is a standard developed by Citrix for use with a remote terminal connection?
A. RDP
B. RDC
C. SIP
D. ICA

30. (p. 415) Which of the following is the most heavily adopted VoiP standard?
A. SIP
B. RTP
C. H.323
D. RDC

31. (p. 392) The first generation of packet-switching technology was called:
A. X.25
B. ATM
C. SONET
D. OC-1

32. (p. 407-408) Which of the following newer technologies proposes to provide networking over the existing power line infrastructure?
A. WiMAX
B. BPL
C. PPOE
D. DSL

33. (p. 416) Which of the following protocols is commonly used to stream video?
A. LTE
B. LEC
C. RTSP
D. GSM

34. (p. 407) All of the following are true concerning LTE (Long-Term Evolution), EXCEPT:
A. serious competitor to WiMAX
B. uses High-Speed Packet Access (HPSA)
C. supported by AT&T, Verizon, and Sprint
D. uses satellite technology

35. (p. 407) Most fiber-to-the-home technologies employ a version of:
A. SONET
B. OC-1
C. passive optical network
D. active optical network