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network 4 Exam Questions Verified and
Provided with A+ Graded Answers
Latest Updated 2026
the amount of traffic that is currently crossing theA network administrator is measuring the transfer of bits across the
network company backbone for a mission critical financial application. The
the type of traffic that is crossing the network administrator notices that the network throughput appears lower
than the latency that is created by the number of the bandwidth expected. Which three factors could influence the
network devices that the data is crossing differences in throughput? (Choose three.)
the amount of traffic that is currently crossing the network
the sophistication of the encapsulation method applied to the data
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
the bandwidth of the WAN connection to the Internet
the reliability of the gigabit Ethernet infrastructure of the backbone
It is not affected by EMI or RFI. What are two characteristics of fiber-optic cable? (Choose two.)
It is more expensive than UTP cabling is. It is not affected by EMI or RFI.
Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding, and twisting to
protect data.
It typically contains 4 pairs of fiber-optic wires.
It is more expensive than UTP cabling is.
create the signals that represent the bits in each What is a primary role of the Physical layer in transmitting data on the
frame on to the media network?
create the signals that represent the bits in each frame on to the media
provide physical addressing to the devices
determine the path packets take through the network
control data access to the media
the magnetic field around the adjacent pairs of With the use of unshielded twisted-pair copper wire in a network, what
wire causes crosstalk within the cable pairs?
the magnetic field around the adjacent pairs of
wire the use of braided wire to shield the adjacent wire
pairs
the reflection of the electrical wave back from the far end of the cable
the collision caused by two nodes trying to use the media
simultaneously
fiber What type of cabling is shown?
, crosstalk In addition to the cable length, what two factors could interfere with the
electromagnetic interference communication carried over UTP cables? (Choose two.)
crosstalk
bandwidth
size of the network
signal modulation technique
electromagnetic interference
UTP What type of cabling is shown?
cordless phones Which two devices commonly affect wireless networks? (Choose two.)
microwaves Blu-ray players
home theaters
cordless phones
microwaves
incandescent light bulbs
It manages the access of frames to the network Which two statements describe the services provided by the data
link media. layer? (Choose two.)
It packages various Layer 3 PDUs into a frame It defines the end-to-end delivery addressing scheme.
format that is compatible with the network It maintains the path between the source and destination devices
during interface. the data transmission.
It manages the access of frames to the network media.
It provides reliable delivery through link establishment and flow control.
It ensures that application data will be transmitted according to the
prioritization.
It packages various Layer 3 PDUs into a frame format that is compatible
with the network interface.
to verify the integrity of the received frame What is the function of the CRC value that is found in the FCS field of a
frame?
to verify the integrity of the received frame
to verify the physical address in the frame
to verify the logical address in the
frame
to compute the checksum header for the data field in the frame
error detection What is contained in the trailer of a data-link
frame? logical address
physical address
data
error detection
They vary depending on protocols. Which statement describes a characteristic of the frame header fields
of the data link layer?
They all include the flow control and logical connection fields.
Ethernet frame header fields contain Layer 3 source and destination
addresses.
They vary depending on protocols.
They include information on user applications.
network 4 Exam Questions Verified and
Provided with A+ Graded Answers
Latest Updated 2026
the amount of traffic that is currently crossing theA network administrator is measuring the transfer of bits across the
network company backbone for a mission critical financial application. The
the type of traffic that is crossing the network administrator notices that the network throughput appears lower
than the latency that is created by the number of the bandwidth expected. Which three factors could influence the
network devices that the data is crossing differences in throughput? (Choose three.)
the amount of traffic that is currently crossing the network
the sophistication of the encapsulation method applied to the data
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
the bandwidth of the WAN connection to the Internet
the reliability of the gigabit Ethernet infrastructure of the backbone
It is not affected by EMI or RFI. What are two characteristics of fiber-optic cable? (Choose two.)
It is more expensive than UTP cabling is. It is not affected by EMI or RFI.
Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding, and twisting to
protect data.
It typically contains 4 pairs of fiber-optic wires.
It is more expensive than UTP cabling is.
create the signals that represent the bits in each What is a primary role of the Physical layer in transmitting data on the
frame on to the media network?
create the signals that represent the bits in each frame on to the media
provide physical addressing to the devices
determine the path packets take through the network
control data access to the media
the magnetic field around the adjacent pairs of With the use of unshielded twisted-pair copper wire in a network, what
wire causes crosstalk within the cable pairs?
the magnetic field around the adjacent pairs of
wire the use of braided wire to shield the adjacent wire
pairs
the reflection of the electrical wave back from the far end of the cable
the collision caused by two nodes trying to use the media
simultaneously
fiber What type of cabling is shown?
, crosstalk In addition to the cable length, what two factors could interfere with the
electromagnetic interference communication carried over UTP cables? (Choose two.)
crosstalk
bandwidth
size of the network
signal modulation technique
electromagnetic interference
UTP What type of cabling is shown?
cordless phones Which two devices commonly affect wireless networks? (Choose two.)
microwaves Blu-ray players
home theaters
cordless phones
microwaves
incandescent light bulbs
It manages the access of frames to the network Which two statements describe the services provided by the data
link media. layer? (Choose two.)
It packages various Layer 3 PDUs into a frame It defines the end-to-end delivery addressing scheme.
format that is compatible with the network It maintains the path between the source and destination devices
during interface. the data transmission.
It manages the access of frames to the network media.
It provides reliable delivery through link establishment and flow control.
It ensures that application data will be transmitted according to the
prioritization.
It packages various Layer 3 PDUs into a frame format that is compatible
with the network interface.
to verify the integrity of the received frame What is the function of the CRC value that is found in the FCS field of a
frame?
to verify the integrity of the received frame
to verify the physical address in the frame
to verify the logical address in the
frame
to compute the checksum header for the data field in the frame
error detection What is contained in the trailer of a data-link
frame? logical address
physical address
data
error detection
They vary depending on protocols. Which statement describes a characteristic of the frame header fields
of the data link layer?
They all include the flow control and logical connection fields.
Ethernet frame header fields contain Layer 3 source and destination
addresses.
They vary depending on protocols.
They include information on user applications.
