COMPTIA NETWORK+ CERTIFICATION EXAM –QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026
Q&A | INSTANT DOWNLOAD PDF.
*Core Domains*
*Network Fundamentals*
*Network Implementations*
*Network Operations*
*Network Security*
*Network Troubleshooting*
*Infrastructure and Cabling*
*Cloud Concepts and Connectivity*
*Network Policies and Best Practices*
*Introduction*
The CompTIA Network+ certification exam is designed to validate the essential knowledge and skills required to design, configure, manage, and
troubleshoot any wired and wireless networks. This assessment focuses on the ability to support network infrastructure through foundational theory
and real-world application. The exam structure incorporates a blend of multiple-choice and scenario-based questions that challenge the candidate’s
decision-making process. By emphasizing critical thinking and professional standards, this exam ensures that successful individuals possess the
technical proficiency to maintain secure, efficient, and resilient network environments across various platforms and regulatory frameworks.
1. A network administrator needs to connect two switches in different buildings located 400 meters apart. Which of the following cable types is
the most appropriate for this implementation?
A. Cat 6a Ethernet
B. Multimode Fiber
🟢 C. Singlemode Fiber
D. Twinaxial Cable
🔴 RATIONALE: Singlemode fiber is designed for long-distance transmissions and can easily cover 400 meters, whereas multimode is typically
used for shorter distances and Cat 6a is limited to 100 meters.
2. Which of the following protocols operates at the Application Layer of the OSI model and is used to securely manage network devices?
,A. SNMPv2
🟢 B. SSH
C. Telnet
D. SSL/TLS
🔴 RATIONALE: SSH (Secure Shell) provides a secure, encrypted channel for managing network devices at the Application Layer, unlike Telnet
which sends data in cleartext.
3. A technician is troubleshooting a PC that cannot connect to the internet. The IP address is 169.254.10.55. Which of the following is the most
likely cause?
🟢 A. DHCP server exhaustion
B. Incorrect DNS configuration
C. Firewall blocking port 80
D. Duplicate IP address
🔴 RATIONALE: An address starting with 169.254.x.x indicates an APIPA address, which occurs when a client cannot reach a DHCP server to
obtain an IP address.
4. Which of the following DNS record types is used specifically to map an IPv6 address to a hostname?
A. A
B. MX
C. CNAME
🟢 D. AAAA
🔴 RATIONALE: The AAAA record (quad-A) maps a hostname to an IPv6 address, while the A record is used for IPv4.
5. A company wants to prevent unauthorized users from plugging their laptops into empty wall jacks in the office. Which of the following security
features should be implemented?
A. Loop prevention
🟢 B. Port security
C. Role-based access control
D. Network address translation
🔴 RATIONALE: Port security allows administrators to limit the number of MAC addresses on a port or restrict it to specific known MAC addresses,
preventing unauthorized physical access.
, 6. Which of the following best describes the function of a Layer 3 switch?
🟢 A. It routes traffic between different subnets based on IP addresses.
B. It filters traffic based on MAC addresses only.
C. It acts as a transparent bridge for all broadcast traffic.
D. It serves as a primary physical layer repeater.
🔴 RATIONALE: A Layer 3 switch combines the functionality of a switch and a router, allowing it to perform routing functions between VLANs or
subnets.
7. Which of the following port numbers is used by the Remote Desktop Protocol (RDP)?
A. 22
B. 443
🟢 C. 3389
D. 5060
🔴 RATIONALE: RDP uses TCP port 3389 by default to allow remote graphical access to Windows-based systems.
8. A technician needs to identify which switch port corresponds to a specific wall outlet. Which of the following tools should be used?
A. Multimeter
B. Loopback plug
C. OTDR
🟢 D. Tone generator and probe
🔴 RATIONALE: A tone generator (fox) and probe (hound) are used to trace cables and identify where a specific wire terminates in a dense patch
panel or switch.
9. Which of the following wireless standards operates in the 6GHz band?
A. 802.11n
B. 802.11ac
🟢 C. 802.11ax
D. 802.11g
🔴 RATIONALE: 802.11ax (Wi-Fi 6E) is the standard that introduced support for the 6GHz frequency band to reduce congestion.
10. A network engineer is configuring a trunk link between two switches. Which of the following protocols is commonly used for VLAN tagging?
Q&A | INSTANT DOWNLOAD PDF.
*Core Domains*
*Network Fundamentals*
*Network Implementations*
*Network Operations*
*Network Security*
*Network Troubleshooting*
*Infrastructure and Cabling*
*Cloud Concepts and Connectivity*
*Network Policies and Best Practices*
*Introduction*
The CompTIA Network+ certification exam is designed to validate the essential knowledge and skills required to design, configure, manage, and
troubleshoot any wired and wireless networks. This assessment focuses on the ability to support network infrastructure through foundational theory
and real-world application. The exam structure incorporates a blend of multiple-choice and scenario-based questions that challenge the candidate’s
decision-making process. By emphasizing critical thinking and professional standards, this exam ensures that successful individuals possess the
technical proficiency to maintain secure, efficient, and resilient network environments across various platforms and regulatory frameworks.
1. A network administrator needs to connect two switches in different buildings located 400 meters apart. Which of the following cable types is
the most appropriate for this implementation?
A. Cat 6a Ethernet
B. Multimode Fiber
🟢 C. Singlemode Fiber
D. Twinaxial Cable
🔴 RATIONALE: Singlemode fiber is designed for long-distance transmissions and can easily cover 400 meters, whereas multimode is typically
used for shorter distances and Cat 6a is limited to 100 meters.
2. Which of the following protocols operates at the Application Layer of the OSI model and is used to securely manage network devices?
,A. SNMPv2
🟢 B. SSH
C. Telnet
D. SSL/TLS
🔴 RATIONALE: SSH (Secure Shell) provides a secure, encrypted channel for managing network devices at the Application Layer, unlike Telnet
which sends data in cleartext.
3. A technician is troubleshooting a PC that cannot connect to the internet. The IP address is 169.254.10.55. Which of the following is the most
likely cause?
🟢 A. DHCP server exhaustion
B. Incorrect DNS configuration
C. Firewall blocking port 80
D. Duplicate IP address
🔴 RATIONALE: An address starting with 169.254.x.x indicates an APIPA address, which occurs when a client cannot reach a DHCP server to
obtain an IP address.
4. Which of the following DNS record types is used specifically to map an IPv6 address to a hostname?
A. A
B. MX
C. CNAME
🟢 D. AAAA
🔴 RATIONALE: The AAAA record (quad-A) maps a hostname to an IPv6 address, while the A record is used for IPv4.
5. A company wants to prevent unauthorized users from plugging their laptops into empty wall jacks in the office. Which of the following security
features should be implemented?
A. Loop prevention
🟢 B. Port security
C. Role-based access control
D. Network address translation
🔴 RATIONALE: Port security allows administrators to limit the number of MAC addresses on a port or restrict it to specific known MAC addresses,
preventing unauthorized physical access.
, 6. Which of the following best describes the function of a Layer 3 switch?
🟢 A. It routes traffic between different subnets based on IP addresses.
B. It filters traffic based on MAC addresses only.
C. It acts as a transparent bridge for all broadcast traffic.
D. It serves as a primary physical layer repeater.
🔴 RATIONALE: A Layer 3 switch combines the functionality of a switch and a router, allowing it to perform routing functions between VLANs or
subnets.
7. Which of the following port numbers is used by the Remote Desktop Protocol (RDP)?
A. 22
B. 443
🟢 C. 3389
D. 5060
🔴 RATIONALE: RDP uses TCP port 3389 by default to allow remote graphical access to Windows-based systems.
8. A technician needs to identify which switch port corresponds to a specific wall outlet. Which of the following tools should be used?
A. Multimeter
B. Loopback plug
C. OTDR
🟢 D. Tone generator and probe
🔴 RATIONALE: A tone generator (fox) and probe (hound) are used to trace cables and identify where a specific wire terminates in a dense patch
panel or switch.
9. Which of the following wireless standards operates in the 6GHz band?
A. 802.11n
B. 802.11ac
🟢 C. 802.11ax
D. 802.11g
🔴 RATIONALE: 802.11ax (Wi-Fi 6E) is the standard that introduced support for the 6GHz frequency band to reduce congestion.
10. A network engineer is configuring a trunk link between two switches. Which of the following protocols is commonly used for VLAN tagging?
