CompTIA Network+
N10-009 2026 | Questions,
Answers & Rationales
Study Guide
|Graded A+ | Guaranteed
success|
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, Layer 4 - Transport: The functions defined in this layer provide for the reliable transmission of data
segments, as well as the disassembly and assembly of the data before and after
transmission.
Layer 5 - Session: - Establishes, manages, and terminates sessions between two communicating
hosts.
- Synchronizes dialog between the presentation layers of the two hosts and
manages their data exchange.
Layer 6 - Presentation: - Ensures that info sent at application layer of one system is readable by the
application layer of another system.
- May translate between multiple data formats by using a common format.
Layer 7 - Application: - Closest to the user.
- Provides network services to the applications of the user, such as email, file
transfer, and terminal emulation.
Router: A device that forwards data packets between computer networks.
Switch: A computer networking device that connects network segments.
Firewall: A part of a computer system or network that is designed to block unauthorized
access while permitting outward communication.
Intrusion detection system (IDS): Monitors network traffic to identify possible malicious activity and log information
about it.
N10-009 2026 | Questions,
Answers & Rationales
Study Guide
|Graded A+ | Guaranteed
success|
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, Layer 4 - Transport: The functions defined in this layer provide for the reliable transmission of data
segments, as well as the disassembly and assembly of the data before and after
transmission.
Layer 5 - Session: - Establishes, manages, and terminates sessions between two communicating
hosts.
- Synchronizes dialog between the presentation layers of the two hosts and
manages their data exchange.
Layer 6 - Presentation: - Ensures that info sent at application layer of one system is readable by the
application layer of another system.
- May translate between multiple data formats by using a common format.
Layer 7 - Application: - Closest to the user.
- Provides network services to the applications of the user, such as email, file
transfer, and terminal emulation.
Router: A device that forwards data packets between computer networks.
Switch: A computer networking device that connects network segments.
Firewall: A part of a computer system or network that is designed to block unauthorized
access while permitting outward communication.
Intrusion detection system (IDS): Monitors network traffic to identify possible malicious activity and log information
about it.
