CCNA 1 v7.0 Modules 4–7
Ethernet Concepts Exam
2026 | Questions, Answers
& Rationales
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Updated 2026 Questions and Answers
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, A network administrator is measuring the transfer of bits the amount of traffic that is currently crossing the network / the type of traffic that
across the company backbone for a mission critical is crossing the network / the latency that is created by the number of network
financial application. The administrator notices that the devices that the data is crossing
network throughput appears lower than the bandwidth
expected. Which three factors could influence the
differences in throughput?
What are two characteristics of fiber-optic cable? 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 create the signals that represent the bits in each frame on to the media.
data on the network?
Explanation: The OSI physical layer provides the means to transport the bits that
make up a frame across the network media. This layer accepts a complete frame
from the data link layer and encodes it as a series of signals that are transmitted to
the local media.
With the use of unshielded twisted-pair copper wire in a the magnetic field around the adjacent pairs of wire
network, what causes crosstalk within the cable pairs?
In addition to the cable length, what two factors could crosstalk / electromagnetic interference
interfere with the communication carried over UTP
cables?
Which two devices commonly affect wireless networks? cordless phones / microwaves
Which two statements describe the services provided by It manages the access of frames to the network media / It packages various Layer
the data link layer? 3 PDUs into a frame format that is compatible with the network interface
What is the function of the CRC value that is found in the to verify the integrity of the received frame
FCS field of a frame?
What is contained in the trailer of a data-link frame? error detection
Which statement describes a characteristic of the frame They vary depending on protocols.
header fields of the data link layer?
A network team is comparing physical WAN topologies partial mesh
for connecting remote sites to a headquarters building.
Which topology provides high availability and connects
some, but not all, remote sites?
Ethernet Concepts Exam
2026 | Questions, Answers
& Rationales
|Graded A+ | Guaranteed
success|
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, A network administrator is measuring the transfer of bits the amount of traffic that is currently crossing the network / the type of traffic that
across the company backbone for a mission critical is crossing the network / the latency that is created by the number of network
financial application. The administrator notices that the devices that the data is crossing
network throughput appears lower than the bandwidth
expected. Which three factors could influence the
differences in throughput?
What are two characteristics of fiber-optic cable? 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 create the signals that represent the bits in each frame on to the media.
data on the network?
Explanation: The OSI physical layer provides the means to transport the bits that
make up a frame across the network media. This layer accepts a complete frame
from the data link layer and encodes it as a series of signals that are transmitted to
the local media.
With the use of unshielded twisted-pair copper wire in a the magnetic field around the adjacent pairs of wire
network, what causes crosstalk within the cable pairs?
In addition to the cable length, what two factors could crosstalk / electromagnetic interference
interfere with the communication carried over UTP
cables?
Which two devices commonly affect wireless networks? cordless phones / microwaves
Which two statements describe the services provided by It manages the access of frames to the network media / It packages various Layer
the data link layer? 3 PDUs into a frame format that is compatible with the network interface
What is the function of the CRC value that is found in the to verify the integrity of the received frame
FCS field of a frame?
What is contained in the trailer of a data-link frame? error detection
Which statement describes a characteristic of the frame They vary depending on protocols.
header fields of the data link layer?
A network team is comparing physical WAN topologies partial mesh
for connecting remote sites to a headquarters building.
Which topology provides high availability and connects
some, but not all, remote sites?
