ITN 100 EXAM 2 NORTHERN VIRGINIA COMMUNITY COLLEGE (NVCC) QUESTIONS & … EXAM
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
ITN 100 Exam 2 Northern
Virginia Community College
(NVCC) Questions & Answers
2026-2027 (Rationales)
Verified Answers Exam Ready With Rationales
126 QUESTIONS
DOCUMENT OVERVIEW
This document provides 126 ITN 100 exam questions with pre-filled correct answers and detailed rationales,
covering fundamental networking concepts. It is suitable for students preparing for exams, reviewing
course material, or seeking certification prep. The provided questions and explanations offer a
comprehensive study tool for mastering networking principles.
CONTENTS
01 • Network Fundamentals 02 • IP Addressing & Protocols 03
• Network Hardware & Devices
04 • Wireless Networking 05 • Ethernet & Switching 06
• Network Design & Performance
07 • WAN Technologies
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 126
which application layer process the packet is from
CORRECT ANSWER
The source destination port identifier tells the destination station _____________.
RATIONALE
The destination port number in a TCP or UDP header identifies the specific application process on the receiving host that
should handle the incoming packet. This allows a single machine to run multiple network services simultaneously.
Q2 QUESTION 2 OF 126
Connectionless
CORRECT ANSWER
______________ routing is most commonly used when the application data or message can fit into one single packet.
RATIONALE
Connectionless routing, like UDP, does not establish a dedicated connection before sending data, making it efficient for
single-packet transmissions where reliability is managed by the application layer. This approach prioritizes speed and
simplicity over guaranteed delivery.
Q3 QUESTION 3 OF 126
True
CORRECT ANSWER
Subnet masks tell computers what part of an IP address is to be used to determine whether a destination is in the
same subnet or in a different subnet.
True or False
RATIONALE
Subnet masks delineate the network and host portions of an IP address, enabling devices to differentiate between local and
remote network traffic. This distinction is fundamental for efficient routing and network segmentation.
Page 2
, Q4 QUESTION 4 OF 126
False
CORRECT ANSWER
TCP/IP operates only as connection-oriented
True or False
RATIONALE
TCP/IP is a suite of protocols, where TCP provides connection-oriented services, but IP itself is connectionless, making the
statement false. The key concept is understanding the layered architecture and distinct functionalities within the TCP/IP
protocol suite.
Q5 QUESTION 5 OF 126
False
CORRECT ANSWER
The standard port number for Telnet is 53.
True or False
RATIONALE
The standard port number for Telnet is 23, not 53, which is used for DNS. This question tests knowledge of common
network service port assignments.
Q6 QUESTION 6 OF 126
True
CORRECT ANSWER
An Address Resolution Protocol message is broadcast to all computers in a subnet to find the data link layer address.
True or False
RATIONALE
ARP messages are indeed broadcast to all devices within a subnet to dynamically map an IP address to its corresponding
MAC address. This process is fundamental for enabling devices to communicate at the data link layer.
Page 3
, Q7 QUESTION 7 OF 126
Multicast message
CORRECT ANSWER
A special type of message that is used when sending the same message to a specific group of computers is called a:
RATIONALE
A multicast message efficiently transmits data to a defined group of recipients simultaneously, unlike broadcast which
targets all devices or unicast which targets a single device. This targeted group delivery conserves network bandwidth by
avoiding redundant transmissions.
Q8 QUESTION 8 OF 126
Routing
CORRECT ANSWER
___________ is the process of determining the path that a message will travel from sending computer to receiving
computer.
RATIONALE
Routing directs network traffic by selecting the optimal path for data packets to traverse between source and destination
hosts across interconnected networks. This process relies on routing protocols to build and maintain forwarding tables
that guide packet delivery.
Q9 QUESTION 9 OF 126
False
CORRECT ANSWER
There are four fundamental approaches to routing: centralized, static routing, dynamic routing, and monitor routing.
True or False
RATIONALE
Routing is primarily categorized into static and dynamic approaches, with centralized and monitor routing not being
standard fundamental classifications. This question tests knowledge of network routing protocols.
Page 4
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
ITN 100 Exam 2 Northern
Virginia Community College
(NVCC) Questions & Answers
2026-2027 (Rationales)
Verified Answers Exam Ready With Rationales
126 QUESTIONS
DOCUMENT OVERVIEW
This document provides 126 ITN 100 exam questions with pre-filled correct answers and detailed rationales,
covering fundamental networking concepts. It is suitable for students preparing for exams, reviewing
course material, or seeking certification prep. The provided questions and explanations offer a
comprehensive study tool for mastering networking principles.
CONTENTS
01 • Network Fundamentals 02 • IP Addressing & Protocols 03
• Network Hardware & Devices
04 • Wireless Networking 05 • Ethernet & Switching 06
• Network Design & Performance
07 • WAN Technologies
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 126
which application layer process the packet is from
CORRECT ANSWER
The source destination port identifier tells the destination station _____________.
RATIONALE
The destination port number in a TCP or UDP header identifies the specific application process on the receiving host that
should handle the incoming packet. This allows a single machine to run multiple network services simultaneously.
Q2 QUESTION 2 OF 126
Connectionless
CORRECT ANSWER
______________ routing is most commonly used when the application data or message can fit into one single packet.
RATIONALE
Connectionless routing, like UDP, does not establish a dedicated connection before sending data, making it efficient for
single-packet transmissions where reliability is managed by the application layer. This approach prioritizes speed and
simplicity over guaranteed delivery.
Q3 QUESTION 3 OF 126
True
CORRECT ANSWER
Subnet masks tell computers what part of an IP address is to be used to determine whether a destination is in the
same subnet or in a different subnet.
True or False
RATIONALE
Subnet masks delineate the network and host portions of an IP address, enabling devices to differentiate between local and
remote network traffic. This distinction is fundamental for efficient routing and network segmentation.
Page 2
, Q4 QUESTION 4 OF 126
False
CORRECT ANSWER
TCP/IP operates only as connection-oriented
True or False
RATIONALE
TCP/IP is a suite of protocols, where TCP provides connection-oriented services, but IP itself is connectionless, making the
statement false. The key concept is understanding the layered architecture and distinct functionalities within the TCP/IP
protocol suite.
Q5 QUESTION 5 OF 126
False
CORRECT ANSWER
The standard port number for Telnet is 53.
True or False
RATIONALE
The standard port number for Telnet is 23, not 53, which is used for DNS. This question tests knowledge of common
network service port assignments.
Q6 QUESTION 6 OF 126
True
CORRECT ANSWER
An Address Resolution Protocol message is broadcast to all computers in a subnet to find the data link layer address.
True or False
RATIONALE
ARP messages are indeed broadcast to all devices within a subnet to dynamically map an IP address to its corresponding
MAC address. This process is fundamental for enabling devices to communicate at the data link layer.
Page 3
, Q7 QUESTION 7 OF 126
Multicast message
CORRECT ANSWER
A special type of message that is used when sending the same message to a specific group of computers is called a:
RATIONALE
A multicast message efficiently transmits data to a defined group of recipients simultaneously, unlike broadcast which
targets all devices or unicast which targets a single device. This targeted group delivery conserves network bandwidth by
avoiding redundant transmissions.
Q8 QUESTION 8 OF 126
Routing
CORRECT ANSWER
___________ is the process of determining the path that a message will travel from sending computer to receiving
computer.
RATIONALE
Routing directs network traffic by selecting the optimal path for data packets to traverse between source and destination
hosts across interconnected networks. This process relies on routing protocols to build and maintain forwarding tables
that guide packet delivery.
Q9 QUESTION 9 OF 126
False
CORRECT ANSWER
There are four fundamental approaches to routing: centralized, static routing, dynamic routing, and monitor routing.
True or False
RATIONALE
Routing is primarily categorized into static and dynamic approaches, with centralized and monitor routing not being
standard fundamental classifications. This question tests knowledge of network routing protocols.
Page 4
