Syngress - Eleventh Hour Network+ Exam N10-004 Study Guide (11 ...

34 CHAPTER 2 Network Media
problems present themselves, tools such as cable testers, tone generators, TDRs,
wire map testers, and oscilloscopes may be used to find the cause or location of
a problem on the cable.
We also saw that data can travel along a cable in several ways, using a simplex,
half-duplex, or full-duplex data transfer, and that Ethernet is a standard that’s
used on most networks today. Ethernet has specifications for 10Base2, 10Base5,
and 10BaseT networks, and it uses CSMA/CD for collision detection.
10Base2 and 10Base5 are networks that use coaxial cable to transfer data, while
10BaseT, 100BaseTX, and 1000BaseT use UTP or STP cabling, and 10BaseFL,
100BaseFX, 100BaseSX, 1000BaseLX, and 1000BaseCX are based on fiber.
Top Five Toughest Questions
1. You are the network administrator of a 10BaseT network. On the weekend,
when few people are working, you run 110 m of cable to a new server that
is being used as a file server. The cable is installed in a new section of the
building, where no cabling currently exists. When you attempt to access
files on the server, they are experiencing errors and corrupt data. Which of
the following is most likely the cause of this problem
A. Bandwidth
B. Attenuation
C. Crosstalk from a neighboring cable
D. CSMA/CD issues
2. Your company uses UTP cable for all of its network connections including
workstations and servers. The users have reported problems connecting to
one of the most important servers on the network, and you have been
called in to look at it due to a possible physical security breach by a
former employee. While examining the server, you find that a small batterypowered
motor has been placed and is running next to the server’s network
connection. What is causing the network problem
A. Electromagnetic interference
B. Static electricity
C. Transceivers
D. Unknown, but the motor is probably unrelated
3. You have been hired by a small company to cable its network. The company
has offices in two buildings that are 300 m apart. Both of the offices have
about 15 computers and the numbers are expected to grow in near future.
All of the computers are within 90 m of one another. You need to decide
on the cabling that will be used both in the individual buildings and
which will be used to connect the buildings LANs together. Which of the
following will you do
A. Use UTP cabling in each of the buildings, and connect the two
buildings together using 10BaseT cabling