Page 118

Chapter 1

Internetworking

14.

B, C. Bridges break up collision domains, which allow more band-
width for users.

15.

D. Baseband signaling is a technique that uses the entire bandwidth
of a wire when transmitting. Broadband wiring uses many signals at
the same time on a wire. These are both considered an Ethernet sig-
naling type.

16.

C. 10BaseT and 100BaseT have a distance limitation of 100 meters.

17.

B. A reliable Transport layer connection uses acknowledgments to
make sure all data is transmitted and received reliably.

18.

C, D. Bridges increase the number of collision domains in a network,
which provides more bandwidth per user, which means less collision
on a LAN.

19.

B, C, E. Hubs cannot run full-duplex Ethernet. Full duplex must be
used on a point-to-point connection between two devices capable of
running full duplex. Switches and hosts can run full duplex between
each other, no problem.

20.

C. The EIA/TIA 232, V.35, X.21, and HSSI are examples of Physical
layer specifications.

21.

C. A straight-through Ethernet cable is used to connect a host or
router to an Ethernet switch.

22.

C, D, E. The Presentation layer defines many protocols; RTF, Quick-
Time, and MIDI are correct answers. IP is a Network layer protocol;
TFTP is an Application layer protocol.

23.

B, C, D, F. Although, Bill Gates is a good answer for me, and Cisco
probably would like the last option, the answers are: not enough
bandwidth, broadcast storms, too many users, and multicasting.

24.

B, D. Routers, by default, break up broadcast domains, which means
that broadcasts sent on one network would not be forwarded to
another network by the router.

25.

E. From a COM port of a PC or other host, connect a rolled cable to
the console port of the router, start HyperTerminal, set the BPS to
9600 and flow control to None, then press Enter to connect.

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