Chapter 5

Modern Ethernet

1. Which term refers to the 100-Mbps standards, even though there are now newer versions of Ethernet available?

A. Fast Ethernet

B. Gigabit Ethernet

C. Full-duplex Ethernet

D. Switched Ethernet

2. The specification for 100BaseTX (100BaseT) calls for UTP cabling using __________ or better rated cabling.

A. CAT 1

B. CAT 2

C. CAT 3

D. CAT 5

3. When a multispeed, auto-sensing 100BaseT NIC connects to a 10BaseT Ethernet hub, at what speed will the NIC function?

A. 10 Mbps sending, 100 Mbps receiving

B. 10 Mbps sending and receiving

C. 100 Mbps sending, 10 Mbps receiving

D. 100 Mbps sending and receiving

4. What is the physical limit to the number of nodes in every version of Ethernet?

A. 48

B. 256

C. 1024

D. 2048

5. What general type of cabling is a technician most likely to use today when installing Ethernet cabling in areas with high electrical interference?

A. Shielded twisted pair (STP)

B. Coaxial

C. Fiber-optic

D. Twinaxial copper

6. What type of fiber-optic cabling and connectors does a 100BaseFX network use?

A. Multimode with ST or SC connectors

B. Multimode with various connectors

C. Twinaxial with twinaxial connectors

D. Single-mode with various connectors

7. If you have a 100BaseT switched Ethernet network, what is the theoretical maximum bandwidth using full-duplex NICs?

A. 10 Mbps

B. 200 Mbps

C. 100 Mbps

D. 1000 Mbps

8. The NIC and the attached __________ determine full- or half-duplex during the auto-negotiation process.

A. repeater

B. amplifier

C. hub

D. switch

9. Which version of Gigabit Ethernet is published under the 802.3ab standard?

A. 1000BaseT

B. 1000BaseSX

C. 1000BaseCX

D. 1000BaseLX

10. Which version of Gigabit Ethernet is published under the 802.3z standard?

A. 1000BaseT

B. 1000BaseTX

C. 1000BaseCX

D. 10 GbE

11. Three versions of Gigabit Ethernet, published under the 802.3z standard, are known together as __________.

A. 1000BaseT

B. 1000BaseSX

C. 1000BaseX

D. 1000BaseLX

12. What is the maximum cable length on a segment of a 1000BaseT network?

A. 100 meters

B. 400 meters

C. 200 meters

D. 2000 meters

13. Which version of Gigabit Ethernet uses a unique cable known as twinaxial?

A. 1000BaseT

B. 1000BaseSX

C. 1000BaseCX

D. 1000BaseLX

14. What version of Gigabit Ethernet is being positioned as the Ethernet backbone of the future?

A. 1000BaseT

B. 1000BaseSX

C. 1000BaseX

D. 1000BaseLX

15. Of all the Gigabit Ethernet IEEE standards detailed in the chapter, which one maintains a signal over the greatest distance?

A. 1000BaseT

B. 1000BaseLX

C. 1000BaseCX

D. 1000BaseSX

16. What is the most common connector used in a 1000BaseSX network?

A. RJ-45

B. SC

C. LC

D. RJ-11

17. Which wavelength is used by 1000BaseLX fiber-optic cabling?

A. 5 km

B. 850 nm

C. 1300 nm

D. 100 meters

18. What type of fiber-optic cable is used in a 1000BaseLX network?

A. Twinaxial

B. Single-mode fiber

C. Multimode

D. CAT 6

19. Which switch and network equipment modular connectors have replaced gigabit interface converters (GBICs) as the modular connector of choice?

A. Small form-factor pluggable (SFP)

B. Ultra Physical Contact (UPC)

C. Angled Physical Contact (APC)

D. Flat-surface

20. Which 10 GbE standard features a multimode fiber type?

A. 10GBaseSR

B. 10GBaseER

C. 10GBaseLR

D. 10GBaseEW

21. What wavelength is used on 10GBaseSW fiber-optic cabling?

A. 1310

B. 850

C. 1300

D. 1550

22. The W in the standard 10GBaseSW stands for which type of signaling?

A. LAN

B. SONET/WAN

C. Wireless

D. Radio

23. The R in the standard 10GBaseSR stands for which type of signaling?

A. LAN

B. SONET/WAN

C. Wireless

D. Radio

24. Which very high-speed fiber network was already in place before the IEEE developed the 10 GbE Ethernet standards?

A. The Internet

B. 10GBaseT

C. 100BaseT

D. SONET

25. What wavelength is used on a 10GBaseSR network?

A. 850 nm

B. 1300 nm

C. 1310 nm

D. 1500 nm

26. What wavelength is used on a 10GBaseEy network?

A. 1310

B. 1300

C. 1550

D. 850

27. Which is the least expensive and most popular 10 GbE media type?

A. 10GBaseSR

B. 10GBaseLW

C. 10GBaseSW

D. 10GBaseLR

28. Which wavelength is used on 10GBaseLW fiber-optic cabling?

A. 1310

B. 1300

C. 1550

D. 850

29. Manufacturers have accommodated the need for switches to connect to a variety of 10 GbE connector types by devising which solution?

A. SC connectors

B. Multisource agreements (MSAs)

C. ST connectors

D. Twinaxial cable

30. 10 GbE equipment is currently being used mostly on __________.

A. small networks

B. big-pipe Internet connections

C. virtual private networks

D. SONET