National Cable Television Institute | Progression Field Tech III-IV Final
Examination
NCTI Progression Field Tech III-IV Final
Comprehensive Examination 2026/2027 |
Verified Questions
National Cable Television Institute | Progression Field Tech III-IV Final Examination |
Professional Telecommunications Candidates
50 Verified Questions | 4 Core Domains | Academic Year 2026/2027
Prepared by
National Cable Television Institute | Progression Field Tech III-IV Final Examination
Final Comprehensive Examination Actual Exam | Academic Year 2026/2027
NCTI Progression Field Tech III-IV Final Comprehensive Examination 2026/2027 | Verified Questions
, INTRODUCTION
This document presents 50 original, single-best-answer questions developed for the Progression
Field Tech III-IV Final Examination. The questions are organized into 4 domains: TCP/IP
Structure, Addressing, and Protocols (13); Fiber Optics and Transmission Systems (13); Network
Troubleshooting and Maintenance (12); Safety, Grounding, and Industry Standards (12). Every
question is original and is designed to reinforce the official course objectives for actual exam
readiness and professional proficiency, aligned to the 2026/2027 academic year. Each question is
followed by its correct answer and a technical rationale grounded in the NCTI Progression Field
Tech III-IV curriculum, Fiber Optic Association guidance, and standard TCP/IP networking
methodology, so that candidates can trace the technical and operational logic behind each
response.
ACTUAL QUESTIONS
Domain 1: TCP/IP Structure, Addressing, and Protocols
Question 1. In the OSI model, the network layer (Layer 3) is responsible for logical
addressing and path selection. Which protocol of the TCP/IP suite operates at this
layer
A. Internet Protocol (IP)
B. Transmission Control Protocol (TCP)
C. Ethernet (IEEE 802.3)
D. Simple Mail Transfer Protocol (SMTP)
Correct Answer: A
Rationale: IP operates at the network layer, providing logical (IP) addressing and routing
information, while TCP operates at the transport layer, Ethernet is a Layer 2 link-layer
technology, and SMTP is an application-layer protocol. Mapping each TCP/IP protocol to its
OSI layer is a core skill in the NCTI Progression Field Tech III-IV curriculum.
Question 2. A technician is assigned the subnet 192.168.10.0/26. How many usable
host addresses are available in this subnet
A. 126
B. 62
C. 64
D. 30
Correct Answer: B
Rationale: A /26 prefix leaves 6 host bits (32 minus 26), giving 2 to the 6, or 64 total addresses.
Subtracting the network address and the broadcast address leaves 62 usable host addresses.
Binary subnet calculations of this form are a recurring competency across the NCTI addressing
curriculum.
Question 3. A host cannot reach resources on a remote network, but it can reach
hosts on its own local segment. Which configuration element is most likely
misconfigured
A. The default gateway
B. The host's MAC address
C. The host's physical location
D. The network cable category
Correct Answer: A
Rationale: The default gateway is the exit point for traffic bound to other networks; local-
segment traffic is resolved directly by ARP and does not traverse the gateway, which is why
local reachability can remain intact while remote traffic fails. An incorrect or missing gateway
is the first element to verify in this symptom pattern.
NCTI Progression Field Tech III-IV Final Comprehensive Examination 2026/2027 | Verified Questions
Examination
NCTI Progression Field Tech III-IV Final
Comprehensive Examination 2026/2027 |
Verified Questions
National Cable Television Institute | Progression Field Tech III-IV Final Examination |
Professional Telecommunications Candidates
50 Verified Questions | 4 Core Domains | Academic Year 2026/2027
Prepared by
National Cable Television Institute | Progression Field Tech III-IV Final Examination
Final Comprehensive Examination Actual Exam | Academic Year 2026/2027
NCTI Progression Field Tech III-IV Final Comprehensive Examination 2026/2027 | Verified Questions
, INTRODUCTION
This document presents 50 original, single-best-answer questions developed for the Progression
Field Tech III-IV Final Examination. The questions are organized into 4 domains: TCP/IP
Structure, Addressing, and Protocols (13); Fiber Optics and Transmission Systems (13); Network
Troubleshooting and Maintenance (12); Safety, Grounding, and Industry Standards (12). Every
question is original and is designed to reinforce the official course objectives for actual exam
readiness and professional proficiency, aligned to the 2026/2027 academic year. Each question is
followed by its correct answer and a technical rationale grounded in the NCTI Progression Field
Tech III-IV curriculum, Fiber Optic Association guidance, and standard TCP/IP networking
methodology, so that candidates can trace the technical and operational logic behind each
response.
ACTUAL QUESTIONS
Domain 1: TCP/IP Structure, Addressing, and Protocols
Question 1. In the OSI model, the network layer (Layer 3) is responsible for logical
addressing and path selection. Which protocol of the TCP/IP suite operates at this
layer
A. Internet Protocol (IP)
B. Transmission Control Protocol (TCP)
C. Ethernet (IEEE 802.3)
D. Simple Mail Transfer Protocol (SMTP)
Correct Answer: A
Rationale: IP operates at the network layer, providing logical (IP) addressing and routing
information, while TCP operates at the transport layer, Ethernet is a Layer 2 link-layer
technology, and SMTP is an application-layer protocol. Mapping each TCP/IP protocol to its
OSI layer is a core skill in the NCTI Progression Field Tech III-IV curriculum.
Question 2. A technician is assigned the subnet 192.168.10.0/26. How many usable
host addresses are available in this subnet
A. 126
B. 62
C. 64
D. 30
Correct Answer: B
Rationale: A /26 prefix leaves 6 host bits (32 minus 26), giving 2 to the 6, or 64 total addresses.
Subtracting the network address and the broadcast address leaves 62 usable host addresses.
Binary subnet calculations of this form are a recurring competency across the NCTI addressing
curriculum.
Question 3. A host cannot reach resources on a remote network, but it can reach
hosts on its own local segment. Which configuration element is most likely
misconfigured
A. The default gateway
B. The host's MAC address
C. The host's physical location
D. The network cable category
Correct Answer: A
Rationale: The default gateway is the exit point for traffic bound to other networks; local-
segment traffic is resolved directly by ARP and does not traverse the gateway, which is why
local reachability can remain intact while remote traffic fails. An incorrect or missing gateway
is the first element to verify in this symptom pattern.
NCTI Progression Field Tech III-IV Final Comprehensive Examination 2026/2027 | Verified Questions
