COMPTIA NETWORK+ QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
Core Domains
*- Networking Fundamentals (23%)*
- Network Implementations (20%)
- Network Operations (19%)
- Network Security (14%)
- Network Troubleshooting (24%)
The CompTIA Network+ certification exam validates essential networking knowledge and skills required for
IT professionals entering the networking field. This assessment covers core competencies including network
architectures, protocols, implementation strategies, operational procedures, security principles, and
troubleshooting methodologies. The exam consists of multiple-choice and scenario-based questions that test
both theoretical understanding and practical application. Candidates must demonstrate ability to configure,
manage, and troubleshoot modern network infrastructure while making informed decisions in real-world
professional contexts. Emphasis is placed on applied knowledge, critical thinking, and adherence to industry
standards and best practices.
Section One: Questions 1–100
Question 1
,Which OSI model layer is responsible for logical addressing and routing packets between networks?
A. Data Link Layer
B. Network Layer
C. Transport Layer
D. Session Layer
🟢 B. Network Layer
🔴 RATIONALE: The Network Layer (Layer 3) handles logical addressing (IP addresses) and routing decisions
to forward packets between different networks. Routers operate at this layer.
Question 2
What is the maximum cable length for Cat6 Ethernet to maintain 1 Gbps speed?
A. 50 meters
B. 100 meters
C. 150 meters
D. 200 meters
🟢 B. 100 meters
🔴 RATIONALE: Cat6 cable supports 1 Gbps up to 100 meters (328 feet). Beyond this distance, signal
degradation occurs and performance drops.
,Question 3
Which protocol dynamically assigns IP addresses to devices on a network?
A. DNS
B. DHCP
C. ARP
D. SNMP
🟢 B. DHCP
🔴 RATIONALE: DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses, subnet
masks, gateways, and other network configuration parameters to client devices.
Question 4
What type of firewall inspection examines the entire packet including payload content?
A. Packet filtering
B. Stateful inspection
C. Deep packet inspection
D. Circuit-level gateway
🟢 C. Deep packet inspection
, 🔴 RATIONALE: Deep packet inspection (DPI) analyzes the complete packet including header and payload
data, enabling detection of malicious content and application-level threats.
Question 5
Which wireless standard operates exclusively in the 5 GHz band and supports speeds up to 1.3 Gbps?
A. 802.11n
B. 802.11ac
C. 802.11ax
D. 802.11g
🟢 B. 802.11ac
🔴 RATIONALE: 802.11ac (Wi-Fi 5) operates only in the 5 GHz band and can achieve theoretical speeds up to
1.3 Gbps with multiple spatial streams.
Question 6
What is the default subnet mask for a Class C IP address?
A. 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0
D. 255.255.255.255
RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
Core Domains
*- Networking Fundamentals (23%)*
- Network Implementations (20%)
- Network Operations (19%)
- Network Security (14%)
- Network Troubleshooting (24%)
The CompTIA Network+ certification exam validates essential networking knowledge and skills required for
IT professionals entering the networking field. This assessment covers core competencies including network
architectures, protocols, implementation strategies, operational procedures, security principles, and
troubleshooting methodologies. The exam consists of multiple-choice and scenario-based questions that test
both theoretical understanding and practical application. Candidates must demonstrate ability to configure,
manage, and troubleshoot modern network infrastructure while making informed decisions in real-world
professional contexts. Emphasis is placed on applied knowledge, critical thinking, and adherence to industry
standards and best practices.
Section One: Questions 1–100
Question 1
,Which OSI model layer is responsible for logical addressing and routing packets between networks?
A. Data Link Layer
B. Network Layer
C. Transport Layer
D. Session Layer
🟢 B. Network Layer
🔴 RATIONALE: The Network Layer (Layer 3) handles logical addressing (IP addresses) and routing decisions
to forward packets between different networks. Routers operate at this layer.
Question 2
What is the maximum cable length for Cat6 Ethernet to maintain 1 Gbps speed?
A. 50 meters
B. 100 meters
C. 150 meters
D. 200 meters
🟢 B. 100 meters
🔴 RATIONALE: Cat6 cable supports 1 Gbps up to 100 meters (328 feet). Beyond this distance, signal
degradation occurs and performance drops.
,Question 3
Which protocol dynamically assigns IP addresses to devices on a network?
A. DNS
B. DHCP
C. ARP
D. SNMP
🟢 B. DHCP
🔴 RATIONALE: DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses, subnet
masks, gateways, and other network configuration parameters to client devices.
Question 4
What type of firewall inspection examines the entire packet including payload content?
A. Packet filtering
B. Stateful inspection
C. Deep packet inspection
D. Circuit-level gateway
🟢 C. Deep packet inspection
, 🔴 RATIONALE: Deep packet inspection (DPI) analyzes the complete packet including header and payload
data, enabling detection of malicious content and application-level threats.
Question 5
Which wireless standard operates exclusively in the 5 GHz band and supports speeds up to 1.3 Gbps?
A. 802.11n
B. 802.11ac
C. 802.11ax
D. 802.11g
🟢 B. 802.11ac
🔴 RATIONALE: 802.11ac (Wi-Fi 5) operates only in the 5 GHz band and can achieve theoretical speeds up to
1.3 Gbps with multiple spatial streams.
Question 6
What is the default subnet mask for a Class C IP address?
A. 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0
D. 255.255.255.255
