TENNESSEE NETWORK INFRASTRUCTURE TECHNICIAN EXAM – EXAM PRACTICE
QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026
Q&A | INSTANT DOWNLOAD PDF
CORE DOMAINS*
- Network Fundamentals
- TCP/IP Protocol Suite
- Routing and Switching Technologies
- Network Security and Access Control
- Wireless Networking
- Network Infrastructure Installation and Maintenance
- Troubleshooting and Diagnostics
- Regulatory Compliance and Safety Standards
- Cloud and Virtualized Networking
- Professional Ethics and Documentation
INTRODUCTION*
The Tennessee Network Infrastructure Technician Exam evaluates the knowledge and
practical skills required to install, maintain, secure, and troubleshoot modern network
infrastructures. Candidates are assessed on networking fundamentals, hardware and
software technologies, regulatory compliance, safety practices, and professional
,responsibilities. The examination includes multiple-choice and scenario-based questions
designed to measure technical competency and decision-making abilities. Emphasis is placed
on real-world applications, problem-solving, network performance optimization, and
adherence to industry standards. Successful candidates demonstrate the ability to support
reliable, secure, and efficient network operations in a variety of organizational environments.
SECTION ONE (QUESTIONS 1–50)
Question 1
Which device primarily operates at Layer 2 of the OSI model and forwards traffic based on
MAC addresses?
A. Router
B. Switch
C. Firewall
D. Modem
🟢 Correct Answer: B. Switch
🔴 Explanation: A switch uses MAC addresses to forward frames within a local network
and primarily operates at the Data Link Layer.
Question 2
What is the default subnet mask for a Class C IPv4 network?
,A. 255.255.255.0
B. 255.0.0.0
C. 255.255.0.0
D. 255.255.255.128
🟢 Correct Answer: A. 255.255.255.0
🔴 Explanation: Class C networks use a default subnet mask of 255.255.255.0, providing
254 usable host addresses.
Question 3
Which protocol automatically assigns IP addresses to devices on a network?
A. DNS
B. FTP
C. DHCP
D. SNMP
🟢 Correct Answer: C. DHCP
🔴 Explanation: DHCP dynamically assigns IP addresses and other network settings to
clients.
Question 4
, A technician suspects a faulty network cable. Which tool is most appropriate for verifying
cable continuity?
A. Spectrum analyzer
B. Tone generator
C. Protocol analyzer
D. Cable tester
🟢 Correct Answer: D. Cable tester
🔴 Explanation: A cable tester verifies continuity, wire mapping, and faults in network
cabling.
Question 5
Which TCP/IP layer corresponds most closely to the OSI Transport Layer?
A. Internet Layer
B. Network Access Layer
C. Transport Layer
D. Application Layer
🟢 Correct Answer: C. Transport Layer
🔴 Explanation: The TCP/IP Transport Layer provides end-to-end communication functions
similar to the OSI Transport Layer.
QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026
Q&A | INSTANT DOWNLOAD PDF
CORE DOMAINS*
- Network Fundamentals
- TCP/IP Protocol Suite
- Routing and Switching Technologies
- Network Security and Access Control
- Wireless Networking
- Network Infrastructure Installation and Maintenance
- Troubleshooting and Diagnostics
- Regulatory Compliance and Safety Standards
- Cloud and Virtualized Networking
- Professional Ethics and Documentation
INTRODUCTION*
The Tennessee Network Infrastructure Technician Exam evaluates the knowledge and
practical skills required to install, maintain, secure, and troubleshoot modern network
infrastructures. Candidates are assessed on networking fundamentals, hardware and
software technologies, regulatory compliance, safety practices, and professional
,responsibilities. The examination includes multiple-choice and scenario-based questions
designed to measure technical competency and decision-making abilities. Emphasis is placed
on real-world applications, problem-solving, network performance optimization, and
adherence to industry standards. Successful candidates demonstrate the ability to support
reliable, secure, and efficient network operations in a variety of organizational environments.
SECTION ONE (QUESTIONS 1–50)
Question 1
Which device primarily operates at Layer 2 of the OSI model and forwards traffic based on
MAC addresses?
A. Router
B. Switch
C. Firewall
D. Modem
🟢 Correct Answer: B. Switch
🔴 Explanation: A switch uses MAC addresses to forward frames within a local network
and primarily operates at the Data Link Layer.
Question 2
What is the default subnet mask for a Class C IPv4 network?
,A. 255.255.255.0
B. 255.0.0.0
C. 255.255.0.0
D. 255.255.255.128
🟢 Correct Answer: A. 255.255.255.0
🔴 Explanation: Class C networks use a default subnet mask of 255.255.255.0, providing
254 usable host addresses.
Question 3
Which protocol automatically assigns IP addresses to devices on a network?
A. DNS
B. FTP
C. DHCP
D. SNMP
🟢 Correct Answer: C. DHCP
🔴 Explanation: DHCP dynamically assigns IP addresses and other network settings to
clients.
Question 4
, A technician suspects a faulty network cable. Which tool is most appropriate for verifying
cable continuity?
A. Spectrum analyzer
B. Tone generator
C. Protocol analyzer
D. Cable tester
🟢 Correct Answer: D. Cable tester
🔴 Explanation: A cable tester verifies continuity, wire mapping, and faults in network
cabling.
Question 5
Which TCP/IP layer corresponds most closely to the OSI Transport Layer?
A. Internet Layer
B. Network Access Layer
C. Transport Layer
D. Application Layer
🟢 Correct Answer: C. Transport Layer
🔴 Explanation: The TCP/IP Transport Layer provides end-to-end communication functions
similar to the OSI Transport Layer.
