System Administration Chapter 4 Quiz
1). As electrical signals travel down a length of wire, they begin to lose their strength. This process is known as
a.
b.
c.
d.
e.
crosstalk.
EMI
attenuation.
bleed over.
interference.
2). Broadband signaling uses ______________ pulses to divide the bandwidth of the cable into different
frequencies.
a. radio frequency digital
b. radio frequency analog
c. direct current electrical
d. alternating current electrical
e. direct current digital
3). Which of the following statements is true concerning a network with the 10Base-2 designation? (Select 2)
a. It has a star topology.
b. It uses coaxial cable.
c. It uses twisted pair cable.
d. It uses broadband communications.
e. It uses baseband communications.
4). Which of the following phrases best illustrates half-duplex communications?
a.
b.
c.
d.
e.
talking on a walkie-talkie
talking on a telephone
giving a speech
having a personal, face-to-face conversation
teaching a class
5). Which of the following statements is not a characteristic of unshielded twisted pair cabling?
a.
b.
c.
d.
e.
The maximum length a piece of cable can run is 100 meters.
It supports data transfer rates up to 100Mbps, provided the appropriate category of cable is used.
It is used in Ethernet and Token Ring networks.
It uses RJ-45 connectors.
It attenuates slowly.
6). Which of the following statements concerning the characteristics of shielded twisted pair cabling are true?
(Select all that apply)
a.
b.
c.
d.
e.
It is less expensive than unshielded twisted pair cable.
It has shorter distance limitations than unshielded twisted pair cable.
The shielding reduces outside interference.
The cabling system must be grounded.
It uses RJ-45 connectors.
7). When using twisted pair cable with RJ-45 connectors in a 10Base-T network configuration, which pins are
used?
a.
b.
c.
d.
e.
1, 2, 3, 4
2, 4, 6, 8
1, 3, 5, 7
2, 3, 4, 6
1, 2, 3, 6
8). Networks using this cable type must be terminated. (Select 2)
a. UTP
b. STP
c. Thinnet
d. Thicknet
e. Fiber optic
9). Match the following coaxial cable types to their uses and terminators.
Cable Type
Usage
Impedance and
Termination
RG-8
Thin Ethernet (10Base2)
75 Ohms
RG-11
ARCNet
50 Ohms
RG-58
Thick Ethernet (10Base5)
93 Ohms
RG-59
Thick Ethernet (10Base5)
50 Ohms
RG-62
Television
50 Ohms
10). In a 10Base-5 network, a short cable is used to connect the AUI connector on the computer with a
transceiver using a
a.
a.
b.
c.
d.
vampire tap.
clamp.
BNC connector.
RJ-11 connector.
RJ-45 connector.
11). Which of the following statements are not characteristics of a 10Base-2 network? (Select all that apply)
a.
b.
c.
d.
e.
It uses RG-58 cable.
RG-58 is about the same price or slightly higher than twisted pair cabling.
Each end of the segment must be equipped with a 75-ohm terminating resistor.
Pieces of coaxial cable may be no shorter than 1.5 meters in length.
Thinnet segments may be a maximum of 200 meters.
12). What does the 5-4-3 rule refer to?
a.
b.
c.
d.
e.
5 total segments, 4 repeaters, 3 segments with devices
5 segments with devices, 4 repeaters, 3 total segments
5 repeaters, 4 total segments, 3 segments with devices
5 total segments, 4 segments with devices, 3 repeaters
5 repeaters, 4 segments with devices, 3 total segments
13). Which of the following cable types is the least susceptible to electromagnetic interference?
a.
b.
c.
d.
e.
UTP
STP
fiber optic
Thinnet
Thicknet
14). Which of the following are not characteristics of fiber-optic cable? (Select all that apply)
a.
b.
c.
d.
e.
It is difficult to terminate and there are several types of connectors in use.
It is less expensive than shielded twisted pair cable.
Fiber optic cable should be laid in a metal raceway or conduit for protection.
Transmitted data is not very secure.
Maximum length is measured in miles, approximately 2.4 kilometers.