, NCTI Progression Field Tech 5-6 |
National Cable Television Institute |
Academic Year 2026/2027 | Final
Comprehensive Examination | 100
Verified Questions and Correct Answer
Rationales | rated 100% correct.
SECTION 1: NETWORK FUNDAMENTALS AND OSI
MODEL
1. Which small network is private to the organization sharing a
common communications line linking together devices such as
computers, printers, and other peripherals?
A. Wide Area Network (WAN)
B. Local Area Network (LAN)
C. Metropolitan Area Network (MAN)
D. Personal Area Network (PAN)
Correct Answer: B. Local Area Network (LAN)
Rationale: A Local Area Network (LAN) is a private network that connects
devices within a limited geographic area, such as an office building or
campus. It allows computers, printers, and other peripherals to share
resources and communicate over a common communications line .
Source: NCTI Final Exam Field Tech 5 to 6 | Verified Questions and Answers
,2. Which of the following is a unique address that is physically
assigned to devices such as a modem or network interface card
(NIC)?
A. Internet Protocol (IP) address
B. Media Access Control (MAC) address
C. Subnet mask
D. Default gateway
Correct Answer: B. Media Access Control (MAC) address
Rationale: A MAC address is a unique hardware identifier assigned to
network interface devices such as modems and NICs. It operates at the Data
Link layer of the OSI model and is used for communication within a local
network segment .
Source: NCTI Final Exam Field Tech 5 to 6 | Verified Questions and Answers
3. Which two layers of the Open Systems Interconnection (OSI)
reference model are combined in the Transmission Control
Protocol/Internet Protocol (TCP/IP) model Network Access Layer?
A. Application Layer and Presentation Layer
B. Session Layer and Transport Layer
C. Data Link Layer and Physical Layer
D. Network Layer and Transport Layer
Correct Answer: C. Data Link Layer and Physical Layer
Rationale: In the TCP/IP model, the Network Access Layer (also called the
Network Interface Layer) combines the functions of the OSI Data Link Layer
and Physical Layer. This layer handles the physical transmission of data and
the framing of packets for local network delivery .
Source: NCTI Field Tech 5-6 Complete Final Exam
4. Which protocol has four numeric fields, each 8 binary bits long,
called "octets"?
, A. Internet Protocol version 6 (IPv6)
B. Internet Protocol version 4 (IPv4)
C. Transmission Control Protocol (TCP)
D. User Datagram Protocol (UDP)
Correct Answer: B. Internet Protocol version 4 (IPv4)
Rationale: IPv4 addresses consist of four octets (8 bits each) separated by
periods, such as 192.168.1.1. Each octet can range from 0 to 255. IPv6 uses
128-bit addresses with hexadecimal notation .
Source: NCTI Final Exam Field Tech 5 to 6 | Verified Questions and Answers
5. Static Internet Protocol (IP) address settings are manually
configured using the IP address, the preferred DNS server, the
alternate DNS server, and the Subnet mask settings. Which setting
is missing from the list?
A. MAC address
B. Default gateway
C. DHCP server
D. Broadcast address
Correct Answer: B. Default gateway
Rationale: A complete static IP configuration requires the IP address, subnet
mask, default gateway, and DNS servers. The default gateway is the router
address that allows communication with devices outside the local subnet .
Source: NCTI Final Exam Field Tech 5 to 6 | Verified Questions and Answers
6. Which command line entry is used for testing latency, packet
loss, and the general health of the modem?
A. ipconfig
B. netstat
C. ping
D. tracert
National Cable Television Institute |
Academic Year 2026/2027 | Final
Comprehensive Examination | 100
Verified Questions and Correct Answer
Rationales | rated 100% correct.
SECTION 1: NETWORK FUNDAMENTALS AND OSI
MODEL
1. Which small network is private to the organization sharing a
common communications line linking together devices such as
computers, printers, and other peripherals?
A. Wide Area Network (WAN)
B. Local Area Network (LAN)
C. Metropolitan Area Network (MAN)
D. Personal Area Network (PAN)
Correct Answer: B. Local Area Network (LAN)
Rationale: A Local Area Network (LAN) is a private network that connects
devices within a limited geographic area, such as an office building or
campus. It allows computers, printers, and other peripherals to share
resources and communicate over a common communications line .
Source: NCTI Final Exam Field Tech 5 to 6 | Verified Questions and Answers
,2. Which of the following is a unique address that is physically
assigned to devices such as a modem or network interface card
(NIC)?
A. Internet Protocol (IP) address
B. Media Access Control (MAC) address
C. Subnet mask
D. Default gateway
Correct Answer: B. Media Access Control (MAC) address
Rationale: A MAC address is a unique hardware identifier assigned to
network interface devices such as modems and NICs. It operates at the Data
Link layer of the OSI model and is used for communication within a local
network segment .
Source: NCTI Final Exam Field Tech 5 to 6 | Verified Questions and Answers
3. Which two layers of the Open Systems Interconnection (OSI)
reference model are combined in the Transmission Control
Protocol/Internet Protocol (TCP/IP) model Network Access Layer?
A. Application Layer and Presentation Layer
B. Session Layer and Transport Layer
C. Data Link Layer and Physical Layer
D. Network Layer and Transport Layer
Correct Answer: C. Data Link Layer and Physical Layer
Rationale: In the TCP/IP model, the Network Access Layer (also called the
Network Interface Layer) combines the functions of the OSI Data Link Layer
and Physical Layer. This layer handles the physical transmission of data and
the framing of packets for local network delivery .
Source: NCTI Field Tech 5-6 Complete Final Exam
4. Which protocol has four numeric fields, each 8 binary bits long,
called "octets"?
, A. Internet Protocol version 6 (IPv6)
B. Internet Protocol version 4 (IPv4)
C. Transmission Control Protocol (TCP)
D. User Datagram Protocol (UDP)
Correct Answer: B. Internet Protocol version 4 (IPv4)
Rationale: IPv4 addresses consist of four octets (8 bits each) separated by
periods, such as 192.168.1.1. Each octet can range from 0 to 255. IPv6 uses
128-bit addresses with hexadecimal notation .
Source: NCTI Final Exam Field Tech 5 to 6 | Verified Questions and Answers
5. Static Internet Protocol (IP) address settings are manually
configured using the IP address, the preferred DNS server, the
alternate DNS server, and the Subnet mask settings. Which setting
is missing from the list?
A. MAC address
B. Default gateway
C. DHCP server
D. Broadcast address
Correct Answer: B. Default gateway
Rationale: A complete static IP configuration requires the IP address, subnet
mask, default gateway, and DNS servers. The default gateway is the router
address that allows communication with devices outside the local subnet .
Source: NCTI Final Exam Field Tech 5 to 6 | Verified Questions and Answers
6. Which command line entry is used for testing latency, packet
loss, and the general health of the modem?
A. ipconfig
B. netstat
C. ping
D. tracert
