Deck 4: Network Media

Question 1

Compared to SMF, MMF cable costs more and generally works with laser-based emitters but spans the longest distances and is used in higher-bandwidth applications.

Answer 1

False

Question 2

You are running a length of fiber optic cable between two wiring closets. What best describes the cable you are running?

A) structured cable
B) backbone cable
C) horizontal cable
D) work area cable

Answer 2

B

Question 3

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-MDF 4-horizontal wiring 5-IDF 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

Answer 3

B

Question 4

Which type of wireless technology bounces transmissions off walls and ceilings to deliver signals from sender to receiver and is often used with TV remotes?

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

Question 5

The entrance facility is the place where the connection to a WAN is located. It is the point where the LAN equipment ends and a third-party provider's equipment and cabling begins. What is another name for this point?

A) departure point
B) entrance point
C) demarcation point
D) main distribution point

Question 6

You will be installing UTP cable at a new facility. You have concerns that some of the cable runs are excessively long. What tool should you use to determine the length of your cable runs?

A) TDR
B) Multimeter
C) OPM
D) Tone generator

Question 7

In an MDI device, 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 8

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 9

An Ethernet cable runs across a warehouse that is 120 meters in length. The bit signals are so weak that they cannot be accurately read by the receiving station. What is the term for this problem?

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

Question 10

Although different networking standards specify different media, bandwidth, and media length, they all use the same type of encoding.

Question 11

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 12

You are asked to make an inventory of all the cables and connections in your network. What are you being asked to inventory?

A) telecommunications closets
B) horizontal wiring
C) work areas
D) cable plant

Question 13

Which type of interference is caused by wires in the same cabling bundle?

A) RFI
B) crosstalk
C) attenuation
D) eavesdropping

Question 14

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

Question 15

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

Question 16

You are instructing a cable installer where to run the UTP cable that goes from the work area on the third floor of your building to the place where it connects with a patch panel and switches. To which facility should you tell the installer to run the cable?

A) MDF
B) IDF
C) Equipment room
D) Point of presence

Question 17

You hand a technician a crossover cable to make a connection between devices. Which device pair are you most likely asking him to connect?

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

Question 18

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

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

Question 19

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 20

Wireless and wired networks are both susceptible to RFI.

Question 21

Match each item with a statement below.
a.cable plant
b.horizontal wiring
c.hertz
d.patch cable
e.backbone cabling
f.encoding
g.differential signal
h.IrDA device
i.IDF
j.MDF
expresses how many times per second a signal or electromagnetic wave occurs

Question 22

Match each item with a statement below.
a.cable plant
b.horizontal wiring
c.hertz
d.patch cable
e.backbone cabling
f.encoding
g.differential signal
h.IrDA device
i.IDF
j.MDF
use infrared signals to communicate

Question 23

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 24

Match each item with a statement below.
a.cable plant
b.horizontal wiring
c.hertz
d.patch cable
e.backbone cabling
f.encoding
g.differential signal
h.IrDA device
i.IDF
j.MDF
connects a patch panel port to a switch or hub

Question 25

Match each item with a statement below.
a.cable plant
b.horizontal wiring
c.hertz
d.patch cable
e.backbone cabling
f.encoding
g.differential signal
h.IrDA device
i.IDF
j.MDF
a telecommunications closet that houses the cabling and devices for work area computers

Question 26

Match each item with a statement below.
a.cable plant
b.horizontal wiring
c.hertz
d.patch cable
e.backbone cabling
f.encoding
g.differential signal
h.IrDA device
i.IDF
j.MDF
interconnects telecommunications closets and equipment rooms

Question 27

Match each item with a statement below.
a.cable plant
b.horizontal wiring
c.hertz
d.patch cable
e.backbone cabling
f.encoding
g.differential signal
h.IrDA device
i.IDF
j.MDF
an equipment and cabling room that serves as the connecting point for backbone cabling between buildings and between IDFs

Question 28

IF you want to run cabling in the space between a false ceiling and the true ceiling, you must use ________-rated cable.

Question 29

Match each item with a statement below.
a.cable plant
b.horizontal wiring
c.hertz
d.patch cable
e.backbone cabling
f.encoding
g.differential signal
h.IrDA device
i.IDF
j.MDF
the method used to represent bits on a medium

Question 30

An OPM measures the amount of __________ transmitted by a device and whether the amount meets the requirements for the device you're connecting.

Question 31

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

Question 32

Match each item with a statement below.
a.cable plant
b.horizontal wiring
c.hertz
d.patch cable
e.backbone cabling
f.encoding
g.differential signal
h.IrDA device
i.IDF
j.MDF
runs from work area's jack to telecommunications closet

Question 33

Which of the following are components of wireless networks? (Choose all that apply.)

A) emitter
B) patch panel
C) antenna
D) AP
E) SMA connectors

Question 34

Match each item with a statement below.
a.cable plant
b.horizontal wiring
c.hertz
d.patch cable
e.backbone cabling
f.encoding
g.differential signal
h.IrDA device
i.IDF
j.MDF
a method for transmitting data in which two wires of opposite polarity are used

Question 35

Match each item with a statement below.
a.cable plant
b.horizontal wiring
c.hertz
d.patch cable
e.backbone cabling
f.encoding
g.differential signal
h.IrDA device
i.IDF
j.MDF
all the cables and connectors that tie a network together

Question 36

Which of the following are types of infrared LANs? (Choose all that apply.)

A) microwave
B) narrowband
C) line-of-sight
D) reflective
E) scatter

Question 37

What is a disadvantage of using fiber-optic cabling versus twisted-pair cabling?

A) limited to shorter distances due to high attenuation
B) low bandwidth potential
C) high susceptibility to eavesdropping
D) more expensive terminations

Question 38

What type of wireless transmission technology is used for 802.11n networks running at 2.4 GHz?

A) OFDM
B) laser
C) DSSS
D) narrowband radio

Question 39

What really determines the ________ of a cabling type is how fast a transmitting device, such as a NIC, can generate bit signals on the medium

Question 40

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

Question 41

What are the benefits of installing a wireless network?

Question 42

What are the benefits of fiber-optic cabling?

Question 43

What is structured cabling and why should you use it?

Question 44

Describe twisted-pair cabling.

Question 45

What are the three most common types of wireless communication and the frequencies they use?

Question 46

What is the difference between an MDI device and an MDI-X device? How does the difference affect the cabling used?

Question 47

What is the difference between a crossover cable that can be used for 100BaseT networks versus one that is suitable for 1000BaseT networks?

Question 48

List four of the typical components of a twisted-pair cable plant.

Question 49

Why is copper cabling susceptible to eavesdropping?