KENTUCKY COMPTIA NETWORK+ CERTIFICATION EXAM PRACTICE TEST QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
Core Domains
1. Networking Concepts (OSI Model, TCP/IP, Ports, Protocols)
2. Network Infrastructure and Design (Topologies, WAN/LAN, Cabling)
3. Network Operations (Performance, Configuration, Optimization)
4. Network Security (Threats, Mitigation, Access Control, Firewalls)
5. Network Troubleshooting and Tools (Command-line, Hardware)
6. Cloud and Virtualization Technologies
7. Network Management and Documentation (Change Management, Disaster Recovery)
8. Industry Standards, Practices, and Regulation (Compliance, Ethics)
Introduction
This comprehensive practice test is meticulously designed to prepare candidates for the Kentucky CompTIA
Network+ certification examination. The assessment evaluates a robust spectrum of networking knowledge, from
foundational theory and protocol analysis to the practical application of troubleshooting methodologies and
security best practices. It emphasizes real-world decision-making through a mix of standard multiple-choice
questions and complex scenario-based items. This resource is intended to simulate the rigor of the actual exam,
challenging candidates to apply critical thinking to network design, implementation, and operational scenarios.
Success on this assessment indicates a readiness for the professional responsibilities and ethical standards expected
of a competent network technician.
,SECTION ONE: QUESTIONS 1 – 100
Question 1
Which of the following IP addresses is a Class C private address?
A. 172.31.1.1
B. 10.1.1.1
C. 192.168.1.1
D. 169.254.1.1
🟢C
🔴 RATIONALE: The correct answer is C. Class C private addresses range from 192.168.0.0 to 192.168.255.255.
The other options are private addresses but belong to different classes: 172.31.1.1 is a Class B private address,
10.1.1.1 is a Class A private address, and 169.254.1.1 is an Automatic Private IP Addressing (APIPA) address.
Question 2
A network administrator is experiencing slow performance on a switch. Which of the following is the MOST
likely cause if a high number of CRC errors are seen on the interface?
A. A faulty network cable
B. An IP address conflict
C. A routing loop
D. A misconfigured VLAN
🟢A
🔴 RATIONALE: The correct answer is A. CRC (Cyclic Redundancy Check) errors are typically caused by physical
layer issues such as a faulty cable, bad connector, or electromagnetic interference. The other options are higher-
,layer issues that would not directly cause CRC errors.
Question 3
What is the primary purpose of the TTL (Time-to-Live) field in an IP packet header?
A. To ensure the packet arrives at the destination in a specific time
B. To prevent packets from looping indefinitely on the network
C. To prioritize traffic based on service requirements
D. To calculate the round-trip time of the packet
🟢B
🔴 RATIONALE: The correct answer is B. The TTL field is decremented by one by each router that processes the
packet. When the TTL reaches zero, the packet is discarded and an ICMP "Time Exceeded" message is sent back
to the source. This mechanism prevents routing loops from causing network congestion.
Question 4
Which protocol is used to resolve an IP address to a MAC address?
A. DNS
B. DHCP
C. RARP
D. ARP
🟢D
🔴 RATIONALE: The correct answer is D. The Address Resolution Protocol (ARP) is used to map a known IP
address to its corresponding MAC address on a local network segment. DNS resolves hostnames to IP
, addresses, DHCP assigns IP addresses, and RARP (Reverse Address Resolution Protocol) is an outdated method
for mapping MAC addresses to IP addresses.
Question 5
A technician is configuring a SOHO network and wants to separate guest traffic from internal corporate traffic.
Which of the following should be configured on the wireless access point?
A. VPN
B. VLAN
C. Subnet mask
D. DMZ
🟢B
🔴 RATIONALE: The correct answer is B. A Virtual Local Area Network (VLAN) allows the administrator to
logically segment the network into different broadcast domains. Creating a separate VLAN for guest traffic
provides network isolation and security. A DMZ is for isolating public-facing servers, a VPN provides secure
remote connections, and a subnet mask defines the network portion of an IP address.
Question 6
When troubleshooting a non-functional network connection, you issue the ipconfig /release command
followed by ipconfig /renew on a Windows client. The client receives an APIPA address. What does this
indicate?
A. The network card is faulty
B. The hostname is being resolved correctly
C. The DHCP server is unreachable
D. The client has a static IP address configured
ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
Core Domains
1. Networking Concepts (OSI Model, TCP/IP, Ports, Protocols)
2. Network Infrastructure and Design (Topologies, WAN/LAN, Cabling)
3. Network Operations (Performance, Configuration, Optimization)
4. Network Security (Threats, Mitigation, Access Control, Firewalls)
5. Network Troubleshooting and Tools (Command-line, Hardware)
6. Cloud and Virtualization Technologies
7. Network Management and Documentation (Change Management, Disaster Recovery)
8. Industry Standards, Practices, and Regulation (Compliance, Ethics)
Introduction
This comprehensive practice test is meticulously designed to prepare candidates for the Kentucky CompTIA
Network+ certification examination. The assessment evaluates a robust spectrum of networking knowledge, from
foundational theory and protocol analysis to the practical application of troubleshooting methodologies and
security best practices. It emphasizes real-world decision-making through a mix of standard multiple-choice
questions and complex scenario-based items. This resource is intended to simulate the rigor of the actual exam,
challenging candidates to apply critical thinking to network design, implementation, and operational scenarios.
Success on this assessment indicates a readiness for the professional responsibilities and ethical standards expected
of a competent network technician.
,SECTION ONE: QUESTIONS 1 – 100
Question 1
Which of the following IP addresses is a Class C private address?
A. 172.31.1.1
B. 10.1.1.1
C. 192.168.1.1
D. 169.254.1.1
🟢C
🔴 RATIONALE: The correct answer is C. Class C private addresses range from 192.168.0.0 to 192.168.255.255.
The other options are private addresses but belong to different classes: 172.31.1.1 is a Class B private address,
10.1.1.1 is a Class A private address, and 169.254.1.1 is an Automatic Private IP Addressing (APIPA) address.
Question 2
A network administrator is experiencing slow performance on a switch. Which of the following is the MOST
likely cause if a high number of CRC errors are seen on the interface?
A. A faulty network cable
B. An IP address conflict
C. A routing loop
D. A misconfigured VLAN
🟢A
🔴 RATIONALE: The correct answer is A. CRC (Cyclic Redundancy Check) errors are typically caused by physical
layer issues such as a faulty cable, bad connector, or electromagnetic interference. The other options are higher-
,layer issues that would not directly cause CRC errors.
Question 3
What is the primary purpose of the TTL (Time-to-Live) field in an IP packet header?
A. To ensure the packet arrives at the destination in a specific time
B. To prevent packets from looping indefinitely on the network
C. To prioritize traffic based on service requirements
D. To calculate the round-trip time of the packet
🟢B
🔴 RATIONALE: The correct answer is B. The TTL field is decremented by one by each router that processes the
packet. When the TTL reaches zero, the packet is discarded and an ICMP "Time Exceeded" message is sent back
to the source. This mechanism prevents routing loops from causing network congestion.
Question 4
Which protocol is used to resolve an IP address to a MAC address?
A. DNS
B. DHCP
C. RARP
D. ARP
🟢D
🔴 RATIONALE: The correct answer is D. The Address Resolution Protocol (ARP) is used to map a known IP
address to its corresponding MAC address on a local network segment. DNS resolves hostnames to IP
, addresses, DHCP assigns IP addresses, and RARP (Reverse Address Resolution Protocol) is an outdated method
for mapping MAC addresses to IP addresses.
Question 5
A technician is configuring a SOHO network and wants to separate guest traffic from internal corporate traffic.
Which of the following should be configured on the wireless access point?
A. VPN
B. VLAN
C. Subnet mask
D. DMZ
🟢B
🔴 RATIONALE: The correct answer is B. A Virtual Local Area Network (VLAN) allows the administrator to
logically segment the network into different broadcast domains. Creating a separate VLAN for guest traffic
provides network isolation and security. A DMZ is for isolating public-facing servers, a VPN provides secure
remote connections, and a subnet mask defines the network portion of an IP address.
Question 6
When troubleshooting a non-functional network connection, you issue the ipconfig /release command
followed by ipconfig /renew on a Windows client. The client receives an APIPA address. What does this
indicate?
A. The network card is faulty
B. The hostname is being resolved correctly
C. The DHCP server is unreachable
D. The client has a static IP address configured
