Deck 4: Network Media

Question 1

Which of the following connections might require a crossover cable?

A) router to switch
B) switch to computer
C) switch to switch
D) hub to computer

Answer 1

C

Question 2

When a signal travels across network medium, it signal loses strength the further it gets from the transmitting station, to the point where the receiving station can no longer interpret the signals correctly. What is the term for this phenomenon?

A) electromagnetic interference
B) crosstalk
C) attenuation
D) radio frequency interference

Answer 2

C

Question 3

Wireless networks are often used to extend the reach of a wired LAN.

Answer 3

True

Question 4

There are two basic categories of physical cabling used in Ethernet networks. They are copper wire and fiber optic.

Question 5

The frequency at which a wireless network operates is measured in cycles per second and is expressed as what unit of measurement?

A) hertz
B) volts
C) watts
D) joules

Question 6

Which of the following is not a form of electromagnetic interference, or EMI?

A) rain/fog
B) transformer
C) fluorescent lights
D) crosstalk

Question 7

What is the maximum bandwidth for a network cabled using category 5e UTP cable?

A) 10 Mbps
B) 16 Mbps
C) 100 Mbps
D) 1000 Mbps

Question 8

What are all of the connections in a network considered, including the cables and their connectors?

A) telecommunications closet
B) horizontal wiring
C) work area
D) cable plant

Question 9

What is the term used that defines network cabling in the work area and between telecommunications closets and equipment rooms?

A) backbone cabling
B) structured cabling
C) horizontal wiring
D) vertical wiring

Question 10

The length of cable between the wall jack and a patch panel is called vertical cabling.

Question 11

Which of the following is not one of the main differences between the types of network cabling?

A) the distance that a signal can travel
B) the ability to send and receive signals
C) the type of signal that the media can transmit
D) the speed at which the signal can be sent

Question 12

Which of the following is a length of cable that connects a computer to either a networking device or to an RJ-45 jack?

A) patch panel
B) cable segment
C) backbone cable
D) patch cable

Question 13

Wireless and wired networks are both susceptible to RFI.

Question 14

What is the way in which bit signals are represented on the network medium?

A) encapsulating
B) encoding
C) decoding
D) terminating

Question 15

The entrance facility is the place where the connection to a WAN is located. It is basically the point where the LAN begins and ends. What is another name for this point?

A) departure point
B) entrance point
C) demarcation point
D) customer premises point

Question 16

What is the maximum cable length for both category 5e and category 6 UTP cable?

A) 10 m
B) 20 m
C) 100 m
D) 1000 m

Question 17

Terrestrial and satellite systems are two types of which wireless networking technology?

A) infrared
B) laser
C) narrowband
D) microwave

Question 18

In an MDI device, on which two pins does the device use to transmit?

A) 1 and 2
B) 3 and 4
C) 4 and 6
D) 3 and 6

Question 19

Because fiber-optic cabling uses light pulses instead of electrical signals, it is immune to interference and highly resistant to eavesdropping.

Question 20

A signal has just been received from the WAN link on your network. Using the given components, which of the following shows the path that the signal would take from the WAN to a workstation on your network? Assume all components are used at least once and that some components may be used more than once. 1-backbone cabling
2-entrance facility
3-equipment room
4-horizontal wiring
5-telecommunications closet
6-work area

A) 2, 1, 3, 4, 5, 4, 6
B) 2, 1, 3, 1, 5, 4, 6
C) 6, 1, 3, 4, 5, 4, 6
D) 2, 1, 5, 1, 3, 4, 6

Question 21

Which of the following are components of a network that are defined by structured cabling?

A) horizontal wiring
B) switch panel
C) entrance facility
D) work area
E) punchdown closet

Question 22

Why is copper cabling susceptible to eavesdropping?

Question 23

Describe twisted-pair cabling.

Question 24

What is the difference between a straight-through cable and a crossover cable?

Question 25

What are the benefits of installing a wireless network?

Question 26

Which of the following categories of UTP cabling are considered to be data grade as specified by ANSI/TIA/EIA? (Choose all that apply.)

A) Category 2
B) Category 3
C) Category 4
D) Category 5
E) Category 6

Question 27

MATCHING

Question 28

A type of wireless network that uses light beams to send signals between two devices and is highly susceptible to visible light sources is called ____________.

Question 29

What five issues should you consider when determining the structure for a new network?

Question 30

Most office buildings usually have a false ceiling with an area above that which is used to run conduit for heating and air conditioning units, called the ____________.

Question 31

What type of wireless technology is used for 802.11b /g /n networks?

A) spread-spectrum radio
B) laser
C) infrared
D) narrowband radio

Question 32

A wireless ____________ using line-of-sight or broadcast transmissions can extend a wired network over a short distance that would normally require a dedicated communication line from a communications carrier.

Question 33

A network that uses the air to transmit signals across the network is considered a(an) ____________ network.

Question 34

What are the benefits of fiber-optic cabling?

Question 35

When would you use a straight-through cable and when would you use a crossover?

Question 36

What is a transceiver and what is its function?

Question 37

What is a disadvantage of using fiber-optic cabling?

A) limited to shorter distances due to high attenuation
B) low bandwidth potential
C) high susceptibility to eavesdropping
D) difficult to install

Question 38

What are the advantages to using UTP in a network installation?

Question 39

When copper wires are bundled together, they are susceptible to ____________, a form of interference where the signals leak out onto other wires.

Question 40

What type of wiring should be used for a high-speed connection between two buildings?

A) coaxial cabling
B) UTP cabling
C) STP cabling
D) fiber-optic cabling

Question 41

What is structured cabling and what are its six components?