ITN 100 EXAM 2 – QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES |
GUARANTEED PASS | LATEST EXAM UPDATE
CORE DOMAINS
Network Administration and Management
Network Security Fundamentals
Wireless Networking (WLANs)
LAN Design, Switching, and VLANs
Routing Fundamentals and IP Addressing
WAN Technologies and Backbone Design
Network Performance and Optimization
INTRODUCTION
This comprehensive assessment is designed to evaluate a student's mastery of core telecommunications and
networking concepts as covered in NVCC's ITN 100 course. It moves beyond simple memorization to test applied
knowledge, critical thinking, and professional decision-making skills essential for success in the field. The exam
comprises 100 multiple-choice questions, including a balanced mix of foundational knowledge, scenario-based
problems, and practical applications. Students are expected to demonstrate an understanding of network
administration, security protocols, wireless technologies, LAN/WAN design, and the OSI model's practical implications.
This rigorous format prepares students for real-world challenges they will face as IT professionals.
,Question 1
A network administrator notices that a critical server is experiencing unusually high latency and packet loss. The
server is located in the core layer of the network's hierarchical design. Which of the following is the most
appropriate first step in the troubleshooting process?
A. Immediately replace the server's network interface card.
B. Reboot the core layer switch to clear any temporary routing loops.
C. Use network monitoring tools to isolate the source of the bottleneck.
D. Implement Quality of Service (QoS) to prioritize traffic to the server.
🟢 Correct Answer: C. Use network monitoring tools to isolate the source of the bottleneck.
🔴 Explanation: The first step in troubleshooting any network performance issue is to gather data and identify the
root cause. Jumping to hardware replacement or configuration changes without a proper diagnosis can be
inefficient and may compound the problem. Network monitoring provides the necessary data to make an informed
decision .
Question 2
What is the primary purpose of establishing a baseline for network performance metrics?
A. To comply with industry regulations.
B. To detect anomalies and plan for future capacity needs.
C. To configure the firewalls and intrusion prevention systems.
D. To provide a checklist for new employee onboarding.
🟢 Correct Answer: B. To detect anomalies and plan for future capacity needs.
🔴 Explanation: A baseline represents the normal operating performance of the network. By comparing current
metrics against this baseline, network administrators can identify deviations that indicate problems. This historical
data is also crucial for capacity planning and justifying network upgrades .
Question 3
Which of the following is a key function of a Network Operations Center (NOC)?
,A. Developing new network applications for end-users.
B. Providing technical support to individual end-users over the phone.
C. Proactively monitoring the network to identify and resolve issues before they impact users.
D. Managing the company's public-facing website content.
🟢 Correct Answer: C. Proactively monitoring the network to identify and resolve issues before they impact users.
🔴 Explanation: The NOC is the central hub for network management. It is staffed by skilled technicians whose main
role is to monitor the network infrastructure continuously, detect faults, and respond to problems to ensure high
availability and performance .
Question 4
A user reports they can connect to the internal company website but cannot access the internet. At which layer of
the Internet model does this problem most likely reside?
A. Physical layer
B. Data link layer
C. Network layer
D. Application layer
🟢 Correct Answer: C. Network layer
🔴 Explanation: The network layer is responsible for routing packets between different networks, such as from the
internal LAN to the internet. If internal resources are accessible but external ones are not, the problem likely lies with
the router or a network layer configuration, such as the default gateway or a firewall rule .
Question 5
Which of the following is a characteristic of "cut-through" switching?
A. The switch waits for the entire frame to be received before forwarding it.
B. The switch forwards the frame as soon as the destination address is read.
C. The switch performs error checking on the entire frame before forwarding.
D. The switch is only used in token ring networks.
, 🟢 Correct Answer: B. The switch forwards the frame as soon as the destination address is read.
🔴 Explanation: Cut-through switching is a fast-forwarding method where a switch reads only the destination MAC
address from a frame's header and begins forwarding it immediately, reducing latency. This is in contrast to store-
and-forward switching, which receives the entire frame and performs error checking .
Question 6
What is the primary benefit of using a Virtual Local Area Network (VLAN)?
A. Increased physical security for all network devices.
B. Improved network performance by logically segmenting a physical network into broadcast domains.
C. The ability to connect a network to the internet without a router.
D. Reduced reliance on the OSI model for troubleshooting.
🟢 Correct Answer: B. Improved network performance by logically segmenting a physical network into broadcast
domains.
🔴 Explanation: VLANs provide logical segmentation of a network, regardless of physical location. This helps to
contain broadcast traffic, improve security, and simplify network management by grouping users and devices
logically .
Question 7
A network engineer is designing a new building's network. The construction is still in the early stages. What is the
most cost-effective strategy for network cabling installation?
A. Install temporary cabling now and replace it when the building is complete.
B. Install cabling during the construction phase, even if some areas aren't finalized.
C. Wait until the building is fully complete before installing any cabling.
D. Only install cabling as new employees are hired.
🟢 Correct Answer: B. Install cabling during the construction phase, even if some areas aren't finalized.
🔴 Explanation: Installing network cabling during a building's construction phase is significantly cheaper than
GUARANTEED PASS | LATEST EXAM UPDATE
CORE DOMAINS
Network Administration and Management
Network Security Fundamentals
Wireless Networking (WLANs)
LAN Design, Switching, and VLANs
Routing Fundamentals and IP Addressing
WAN Technologies and Backbone Design
Network Performance and Optimization
INTRODUCTION
This comprehensive assessment is designed to evaluate a student's mastery of core telecommunications and
networking concepts as covered in NVCC's ITN 100 course. It moves beyond simple memorization to test applied
knowledge, critical thinking, and professional decision-making skills essential for success in the field. The exam
comprises 100 multiple-choice questions, including a balanced mix of foundational knowledge, scenario-based
problems, and practical applications. Students are expected to demonstrate an understanding of network
administration, security protocols, wireless technologies, LAN/WAN design, and the OSI model's practical implications.
This rigorous format prepares students for real-world challenges they will face as IT professionals.
,Question 1
A network administrator notices that a critical server is experiencing unusually high latency and packet loss. The
server is located in the core layer of the network's hierarchical design. Which of the following is the most
appropriate first step in the troubleshooting process?
A. Immediately replace the server's network interface card.
B. Reboot the core layer switch to clear any temporary routing loops.
C. Use network monitoring tools to isolate the source of the bottleneck.
D. Implement Quality of Service (QoS) to prioritize traffic to the server.
🟢 Correct Answer: C. Use network monitoring tools to isolate the source of the bottleneck.
🔴 Explanation: The first step in troubleshooting any network performance issue is to gather data and identify the
root cause. Jumping to hardware replacement or configuration changes without a proper diagnosis can be
inefficient and may compound the problem. Network monitoring provides the necessary data to make an informed
decision .
Question 2
What is the primary purpose of establishing a baseline for network performance metrics?
A. To comply with industry regulations.
B. To detect anomalies and plan for future capacity needs.
C. To configure the firewalls and intrusion prevention systems.
D. To provide a checklist for new employee onboarding.
🟢 Correct Answer: B. To detect anomalies and plan for future capacity needs.
🔴 Explanation: A baseline represents the normal operating performance of the network. By comparing current
metrics against this baseline, network administrators can identify deviations that indicate problems. This historical
data is also crucial for capacity planning and justifying network upgrades .
Question 3
Which of the following is a key function of a Network Operations Center (NOC)?
,A. Developing new network applications for end-users.
B. Providing technical support to individual end-users over the phone.
C. Proactively monitoring the network to identify and resolve issues before they impact users.
D. Managing the company's public-facing website content.
🟢 Correct Answer: C. Proactively monitoring the network to identify and resolve issues before they impact users.
🔴 Explanation: The NOC is the central hub for network management. It is staffed by skilled technicians whose main
role is to monitor the network infrastructure continuously, detect faults, and respond to problems to ensure high
availability and performance .
Question 4
A user reports they can connect to the internal company website but cannot access the internet. At which layer of
the Internet model does this problem most likely reside?
A. Physical layer
B. Data link layer
C. Network layer
D. Application layer
🟢 Correct Answer: C. Network layer
🔴 Explanation: The network layer is responsible for routing packets between different networks, such as from the
internal LAN to the internet. If internal resources are accessible but external ones are not, the problem likely lies with
the router or a network layer configuration, such as the default gateway or a firewall rule .
Question 5
Which of the following is a characteristic of "cut-through" switching?
A. The switch waits for the entire frame to be received before forwarding it.
B. The switch forwards the frame as soon as the destination address is read.
C. The switch performs error checking on the entire frame before forwarding.
D. The switch is only used in token ring networks.
, 🟢 Correct Answer: B. The switch forwards the frame as soon as the destination address is read.
🔴 Explanation: Cut-through switching is a fast-forwarding method where a switch reads only the destination MAC
address from a frame's header and begins forwarding it immediately, reducing latency. This is in contrast to store-
and-forward switching, which receives the entire frame and performs error checking .
Question 6
What is the primary benefit of using a Virtual Local Area Network (VLAN)?
A. Increased physical security for all network devices.
B. Improved network performance by logically segmenting a physical network into broadcast domains.
C. The ability to connect a network to the internet without a router.
D. Reduced reliance on the OSI model for troubleshooting.
🟢 Correct Answer: B. Improved network performance by logically segmenting a physical network into broadcast
domains.
🔴 Explanation: VLANs provide logical segmentation of a network, regardless of physical location. This helps to
contain broadcast traffic, improve security, and simplify network management by grouping users and devices
logically .
Question 7
A network engineer is designing a new building's network. The construction is still in the early stages. What is the
most cost-effective strategy for network cabling installation?
A. Install temporary cabling now and replace it when the building is complete.
B. Install cabling during the construction phase, even if some areas aren't finalized.
C. Wait until the building is fully complete before installing any cabling.
D. Only install cabling as new employees are hired.
🟢 Correct Answer: B. Install cabling during the construction phase, even if some areas aren't finalized.
🔴 Explanation: Installing network cabling during a building's construction phase is significantly cheaper than
