
ITN - Module 4 - Physical Layer
Quiz
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Instructional Technology
•
Professional Development
•
Practice Problem
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Medium
Andrew Cruickshank
Used 48+ times
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15 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
A network administrator notices that some newly installed Ethernet cabling is carrying corrupt and distorted data signals. The new cabling was installed in the ceiling close to fluorescent lights and electrical equipment. Which two factors may interfere with the copper cabling and result in signal distortion and data corruption? (Choose two.)
Crosstalk
EMI
Signal Attenuation
RFI
Length of cable
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What technique is used with UTP cable to help protect against signal interference from crosstalk?
Encasing the cables with a protective sheath
Shortening the cable
Wrapping foil shield around the wire pairs
Twisting the wires together into pairs
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is one advantage of using fiber optic cabling rather than copper cabling?
Easier to terminate
Usually cheaper than copper
Can carry signals much faster than copper
Used for installing on tighter bends
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is indicated by the term throughput?
Measurement of bits transferred across the media over a given period of time
How long it takes to get from source to destination
Measurement of unusable data transferred across the media
Guaranteed amount of data transferable across the media
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Why are two strands of fiber used for a single fiber optic connection?
Prevents crosstalk
Prevents EMI and EFI interference
Allows full duplex connectivity
Increases speed
Used for redundancy
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media?
Data Link
Application
Transport
Physical
7.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
The throughput of a FastEthernet network is 100 Mb/s. The traffic overhead for establishing sessions, acknowledgments, and encapsulation is 15 Mb/s for the same time period. What is the goodput for this network? (Insert number only)
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