CCNA 1 v7.0 Modules 4 - 7 Ethernet
Concepts Exam Question & Answers
(Latest 2025)
What is the purpose of the OSI physical layer? -
CORRECT ANSWERS ✅transmitting bits across the
local media*
Why are two strands of fiber used for a single fiber optic
connection? - CORRECT ANSWERS ✅They allow for
full-duplex connectivity.*
Which characteristic describes crosstalk? - CORRECT
ANSWERS ✅the distortion of the transmitted
messages from signals carried in adjacent wires*
Which procedure is used to reduce the effect of crosstalk
in copper cables? - CORRECT ANSWERS ✅twisting
opposing circuit wire pairs together*
Match the situation with the appropriate use of network
media. - CORRECT ANSWERS ✅* copper cables -
horizontal cabling structure / desktop PCs in an enterprise
office
*fiber optic - backbone cabling in an enterprise / long-
haul networks
, CCNA 1 v7.0 Modules 4 - 7 Ethernet
Concepts Exam Question & Answers
(Latest 2025)
*wireless - guest access in a coffee shop / waiting rooms
in a hospital
A network administrator is measuring the transfer of bits
across the company backbone for a mission critical
financial application. The administrator notices that the
network throughput appears lower than the bandwidth
expected. Which three factors could influence the
differences in throughput? - CORRECT ANSWERS
✅the amount of traffic that is currently crossing the
network / the type of traffic that is crossing the network /
the latency that is created by the number of network
devices that the data is crossing
What are two characteristics of fiber-optic cable? -
CORRECT ANSWERS ✅It is not affected by EMI or
RFI(crosstalk) / It is more expensive than UTP cabling is
What is a primary role of the Physical layer in
transmitting data on the network? - CORRECT
ANSWERS ✅create the signals that represent the bits
in each frame on to the media.
Concepts Exam Question & Answers
(Latest 2025)
What is the purpose of the OSI physical layer? -
CORRECT ANSWERS ✅transmitting bits across the
local media*
Why are two strands of fiber used for a single fiber optic
connection? - CORRECT ANSWERS ✅They allow for
full-duplex connectivity.*
Which characteristic describes crosstalk? - CORRECT
ANSWERS ✅the distortion of the transmitted
messages from signals carried in adjacent wires*
Which procedure is used to reduce the effect of crosstalk
in copper cables? - CORRECT ANSWERS ✅twisting
opposing circuit wire pairs together*
Match the situation with the appropriate use of network
media. - CORRECT ANSWERS ✅* copper cables -
horizontal cabling structure / desktop PCs in an enterprise
office
*fiber optic - backbone cabling in an enterprise / long-
haul networks
, CCNA 1 v7.0 Modules 4 - 7 Ethernet
Concepts Exam Question & Answers
(Latest 2025)
*wireless - guest access in a coffee shop / waiting rooms
in a hospital
A network administrator is measuring the transfer of bits
across the company backbone for a mission critical
financial application. The administrator notices that the
network throughput appears lower than the bandwidth
expected. Which three factors could influence the
differences in throughput? - CORRECT ANSWERS
✅the amount of traffic that is currently crossing the
network / the type of traffic that is crossing the network /
the latency that is created by the number of network
devices that the data is crossing
What are two characteristics of fiber-optic cable? -
CORRECT ANSWERS ✅It is not affected by EMI or
RFI(crosstalk) / It is more expensive than UTP cabling is
What is a primary role of the Physical layer in
transmitting data on the network? - CORRECT
ANSWERS ✅create the signals that represent the bits
in each frame on to the media.
