CCNA Introduction to
Networks Final Exam 2026
| Questions, Answers &
Rationales Study Guide
|Graded A+ | Guaranteed
success|
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, What mechanism is used by a router to prevent a It decrements the value of the TTL field by 1 and if the result is 0, it discards the
received IPv4 packet from traveling endlessly on a packet and sends a Time Exceeded message to the source host.
network?
A network administrator is designing the layout of a new -security
wireless network. Which three areas of concern should -interference
be accounted for when building a wireless network? -coverage area
(Choose three.)
Refer to the exhibit. What is wrong with the displayed The untwisted length of each wire is too long.
termination?
A network administrator notices that some newly installed -EMI
Ethernet cabling is carrying corrupt and distorted data -RFI
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.)
Data is being sent from a source PC to a destination -The source port field identifies the running application or service that will handle
server. Which three statements correctly describe the data returning to the PC.
function of TCP or UDP in this situation? (Choose three.) -UDP segments are encapsulated within IP packets for transport across the
network.
-The UDP destination port number identifies the application or service on the
server which will handle the data.
Match the application protocols to the correct transport -
protocols.
A group of Windows PCs in a new subnet has been -ping
added to an Ethernet network. When testing the -ipconfig
connectivity, a technician finds that these PCs can access -nslookup
local network resources but not the Internet resources.
To troubleshoot the problem, the technician wants to
initially confirm the IP address and DNS configurations on
the PCs, and also verify connectivity to the local router.
Which three Windows CLI commands and utilities will
provide the necessary information? (Choose three.)
Networks Final Exam 2026
| Questions, Answers &
Rationales Study Guide
|Graded A+ | Guaranteed
success|
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, What mechanism is used by a router to prevent a It decrements the value of the TTL field by 1 and if the result is 0, it discards the
received IPv4 packet from traveling endlessly on a packet and sends a Time Exceeded message to the source host.
network?
A network administrator is designing the layout of a new -security
wireless network. Which three areas of concern should -interference
be accounted for when building a wireless network? -coverage area
(Choose three.)
Refer to the exhibit. What is wrong with the displayed The untwisted length of each wire is too long.
termination?
A network administrator notices that some newly installed -EMI
Ethernet cabling is carrying corrupt and distorted data -RFI
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.)
Data is being sent from a source PC to a destination -The source port field identifies the running application or service that will handle
server. Which three statements correctly describe the data returning to the PC.
function of TCP or UDP in this situation? (Choose three.) -UDP segments are encapsulated within IP packets for transport across the
network.
-The UDP destination port number identifies the application or service on the
server which will handle the data.
Match the application protocols to the correct transport -
protocols.
A group of Windows PCs in a new subnet has been -ping
added to an Ethernet network. When testing the -ipconfig
connectivity, a technician finds that these PCs can access -nslookup
local network resources but not the Internet resources.
To troubleshoot the problem, the technician wants to
initially confirm the IP address and DNS configurations on
the PCs, and also verify connectivity to the local router.
Which three Windows CLI commands and utilities will
provide the necessary information? (Choose three.)
