True/False (4 points each question) Indicate whether the statement is true or fa
ID: 3873285 • Letter: T
Question
True/False (4 points each question)
Indicate whether the statement is true or false.
____ 1. The strength of an electrical signal is directly proportional to its frequency.
____ 2. Modulation can be used to make a signal conform to a specific pathway.
____ 3. Ethernet is an example of a baseband system found on many LANs.
____ 4. Latency occurs when a signal traveling on one wire or cable infringes on the signal traveling over an adjacent wire or cable.
____ 5. The maximum distance a signal can travel and still be interpreted accurately is equal to a segment’s maximum length.
____ 6. The distance between corresponding points on a wave’s cycle is called its wavelength.
Completion (4 points each question)
Complete each statement.
1. The use of 1s and 0s to represent information is characteristic of a(n) ____________________ system.
2. ____________________ is a term used by networking professionals to describe the nondata information that must accompany data for a signal to be properly routed and interpreted by the network.
3. ____________________ transmission involves one transmitter and multiple receivers.
4. ____________________ are the pieces of hardware that connect the wire to the network device.
5. ____________________ cabling consists of one or more insulated wire pairs encased in a plastic sheath.
Matching (4 points each question)
Match each item with a statement below:
a.
bit
f.
populated segment
b.
data modulation
g.
unpopulated segment
c.
baseband
h.
broadband
d.
EMI (electromagnetic interference)
i.
nonbroadcast
e.
broadcast
____ 1. Transmission that involves one transmitter and multiple, undefined receivers.
____ 2. Transmission that issues signals to multiple, defined recipients.
____ 3. Transmission form in which (typically) digital signals are sent through direct current (DC) pulses applied to the wire.
____ 4. Part of a network that contains end nodes.
____ 5. A common source of noise.
____ 6. Every pulse in a digital signal.
____ 7. Part of the network that does not contain end nodes.
____ 8. A form of transmission in which signals are modulated as radio frequency (RF) analog waves that use different frequency ranges.
____ 9. Technology used to modify analog signals to make them suitable for carrying data over a communication path.
Short Answer (4 points each question)
1. Describe a drawback of analog signals.
2. Describe variables that may influence the final cost of implementing a certain type of media.
3. Explain the makeup of twisted pair wire.
4. Describe the advantages of twisted pair wiring.
5. Describe the benefits of fiber-optic cabling over copper cabling.
give answer in text
Explanation / Answer
1.The strength of an electrical signal is directly proportional to its frequency.
ans:false
2.Modulation can be used to make a signal conform to a specific pathway.
ans:True
3. Ethernet is an example of a baseband system found on many LANs.
Ans: True
4.Latency occurs when a signal traveling on one wire or cable infringes on the
signal traveling over an adjacent wire or cable
ans:false
5.The maximum distance a signal can travel
and still be interpreted accurately is equal to a segment’s maximum length.
ans:True
6.The distance between corresponding points on a wave’s cycle is called its wavelength
ans:True
1.
1. The use of 1s and 0s to represent information is characteristic of
a(n) ____________________ system.
ans: binary
2. ____________________ is a term used by networking professionals to describe
the nondata information that must accompany data for a signal to be properly
routed and interpreted by the network.
ans:overhead
3.____________________ transmission involves
one transmitter and multiple receivers.
ans:point to multipoint
4.____________________ are the pieces of hardware that connect the wire to the network device
ans:connectors
5. ____________________ cabling consists of one or more insulated wire pairs encased in a plastic sheath.
ans:Unshielded Twisted Pair
1. Transmission that involves one transmitter and multiple, undefined receivers.
e,broadcast
2. Transmission that issues signals to multiple, defined recipients.
i.nonbroadcast
3.Transmission form in which (typically) digital signals are sent through direct current (DC)
pulses applied to the wire.
c,baseband
4.Part of a network that contains end nodes.
f,populated segment
5. A common source of noise.
d,EMI (electromagnetic interference)
6. Every pulse in a digital signal.
a,bit
7.Part of the network that does not contain end nodes.
g.unpopulated segment
8. A form of transmission in which signals are modulated as
radio frequency (RF) analog waves that use different frequency ranges.
ans:h,broadband
9. Technology used to modify analog
signals to make them suitable for carrying data over a communication path.
ans:b,data modulation
1.Describe a drawback of analog signals.
ans:
The main drawback of the analog signal isthat village
is varying .
It will cause noise in the transmissionflaws.
That may cause degrade in digital signals.
2.Describe variables that may influence
the final cost of implementing a certain type of media.
ans;
the most important variables that impact on final cost are
maintenance cost and support:
Reuse of the old cable will not save money because
if any damage cause that will increase the money for
repair and enhancement.
installation cost:
The installation cost is high , and hire contractors.
3. Explain the makeup of twisted pair wire.
ans.
Twisted pair wire made up of color pair of insulated
copper wires.
and the size is 0.4 to 0.8mm.
Number of pairs in the cable wire depends up on the
type of cable.
Two wires are encased by a plastic sheath for protection.
4. Describe the advantages of twisted pair wiring.
ans:
Twiste pair wire is less cost
flexible
very less time to install
Twisted pair wire can place in different topologies.
5.Describe the benefits of fiber-optic cabling over copper cabling.
ans:
Fiber optic cable is a simple fiber contains plastic fibers.
Fibers contains layer of glass is known as cladding.
The reflection of the light allows fiber to bend across
the corner based on the integrity of signal.
The cladding is protected by the buffer.
The buffer can absorb the light.
at last the buffer can protected by kelvar.
Then the kelvar is protected by plastic sheath.
At last fiber gives security for cabling.
and protects from noise.
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