Practice Free N10-009 Exam Online Questions
Question #11
An administrator is configuring a switch that will be placed in an area of the office that is accessible to customers.
Which of the following is the best way for the administrator to mitigate unknown devices from connecting to the network?
- A . SSE
- B . ACL
- C . Perimeter network
- D . 802.1x
Correct Answer: D
D
Explanation:
D
Explanation:
Question #12
Which of the following is a characteristic of the application layer?
- A . It relies upon other layers for packet delivery.
- B . It checks independently for packet loss.
- C . It encrypts data in transit.
- D . It performs address translation.
Correct Answer: A
A
Explanation:
Introduction to OSI Model:
The OSI model is a conceptual framework used to understand network interactions in seven layers:
Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Application Layer:
The application layer (Layer 7) is the topmost layer in the OSI model. It provides network services directly to end-user applications. This layer facilitates communication between software applications and lower layers of the network protocol stack.
Reliance on Other Layers:
The application layer relies on the transport layer (Layer 4) for data transfer across the network. The transport layer ensures reliable data delivery through protocols like TCP and UDP.
The network layer (Layer 3) is responsible for routing packets to their destination. The data link layer (Layer 2) handles node-to-node data transfer and error detection. The physical layer (Layer 1) deals with the physical connection between devices.
Explanation of the Options:
A
Explanation:
Introduction to OSI Model:
The OSI model is a conceptual framework used to understand network interactions in seven layers:
Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Application Layer:
The application layer (Layer 7) is the topmost layer in the OSI model. It provides network services directly to end-user applications. This layer facilitates communication between software applications and lower layers of the network protocol stack.
Reliance on Other Layers:
The application layer relies on the transport layer (Layer 4) for data transfer across the network. The transport layer ensures reliable data delivery through protocols like TCP and UDP.
The network layer (Layer 3) is responsible for routing packets to their destination. The data link layer (Layer 2) handles node-to-node data transfer and error detection. The physical layer (Layer 1) deals with the physical connection between devices.
Explanation of the Options:
Question #13
A user connects to a corporate VPN via a web browser and is able to use TLS to access the internal financial system to input a time card.
Which of the following best describes how the VPN is being used?
- A . Clientless
- B . Client-to-site
- C . Full tunnel
- D . Site-to-site
Correct Answer: A
A
Explanation:
Reference: CompTIA Network+ Certification Exam Objectives – Remote Access Methods section.
A
Explanation:
Reference: CompTIA Network+ Certification Exam Objectives – Remote Access Methods section.
Question #14
A network administrator wants to configure a backup route in case the primary route fails. A dynamic routing protocol is not installed on the router.
Which of the following routing features should the administrator choose to accomplish this task?
- A . Neighbor adjacency
- B . Link state flooding
- C . Administrative distance
- D . Hop count
Correct Answer: C
C
Explanation:
Introduction to Administrative Distance
Administrative distance (AD) is a value used by routers to rank routes from different routing protocols. AD represents the trustworthiness of the source of the route. Lower AD values are more preferred. If a router has multiple routes to a destination from different sources, it will choose the route with the lowest AD.
Static Routes and Backup Routes
When a dynamic routing protocol is not used, static routes can be employed. Static routes are manually configured routes. To ensure a backup route, multiple static routes to the same destination can be configured with different AD values.
Configuring Static Routes with Administrative Distance
The primary route is configured with a lower AD value, making it the preferred route. The backup route is configured with a higher AD value. In the event of the primary route failure, the router will then use the backup route.
Example Configuration:
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Copy code
ip route 192.168.1.0 255.255.255.0 10.0.0.1 1
ip route 192.168.1.0 255.255.255.0 10.0.0.2 10
In the above example, 192.168.1.0/24 is the destination network.
C
Explanation:
Introduction to Administrative Distance
Administrative distance (AD) is a value used by routers to rank routes from different routing protocols. AD represents the trustworthiness of the source of the route. Lower AD values are more preferred. If a router has multiple routes to a destination from different sources, it will choose the route with the lowest AD.
Static Routes and Backup Routes
When a dynamic routing protocol is not used, static routes can be employed. Static routes are manually configured routes. To ensure a backup route, multiple static routes to the same destination can be configured with different AD values.
Configuring Static Routes with Administrative Distance
The primary route is configured with a lower AD value, making it the preferred route. The backup route is configured with a higher AD value. In the event of the primary route failure, the router will then use the backup route.
Example Configuration:
plaintext
Copy code
ip route 192.168.1.0 255.255.255.0 10.0.0.1 1
ip route 192.168.1.0 255.255.255.0 10.0.0.2 10
In the above example, 192.168.1.0/24 is the destination network.
Question #15
A storage network requires reduced overhead and increased efficiency for the amount of data being sent.
Which of the following should an engineer likely configure to meet these requirements>?
- A . Link speed
- B . Jumbo frames
- C . QoS
- D . 802.1q tagging
Correct Answer: B
B
Explanation:
Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. Configuring jumbo frames can reduce overhead and increase efficiency in storage networks by allowing more data to be sent in each frame, thus reducing the number of frames needed to transmit the same amount of data.
Reduced Overhead: By sending larger frames, the relative overhead for headers and acknowledgments is reduced.
Increased Efficiency: Larger frames mean fewer packets to process, leading to better utilization of network bandwidth and improved performance in high-throughput environments like storage networks.
Configuration: Requires support from all devices in the network path, including switches and network interface cards (NICs).
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains jumbo frames and their benefits in reducing network overhead.
Cisco Networking Academy: Provides training on network optimization techniques, including the use of jumbo frames.
Network+ Certification All-in-One Exam Guide: Covers advanced Ethernet features, including jumbo frames and their configuration for improved network performance.
B
Explanation:
Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. Configuring jumbo frames can reduce overhead and increase efficiency in storage networks by allowing more data to be sent in each frame, thus reducing the number of frames needed to transmit the same amount of data.
Reduced Overhead: By sending larger frames, the relative overhead for headers and acknowledgments is reduced.
Increased Efficiency: Larger frames mean fewer packets to process, leading to better utilization of network bandwidth and improved performance in high-throughput environments like storage networks.
Configuration: Requires support from all devices in the network path, including switches and network interface cards (NICs).
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains jumbo frames and their benefits in reducing network overhead.
Cisco Networking Academy: Provides training on network optimization techniques, including the use of jumbo frames.
Network+ Certification All-in-One Exam Guide: Covers advanced Ethernet features, including jumbo frames and their configuration for improved network performance.
Question #15
A storage network requires reduced overhead and increased efficiency for the amount of data being sent.
Which of the following should an engineer likely configure to meet these requirements>?
- A . Link speed
- B . Jumbo frames
- C . QoS
- D . 802.1q tagging
Correct Answer: B
B
Explanation:
Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. Configuring jumbo frames can reduce overhead and increase efficiency in storage networks by allowing more data to be sent in each frame, thus reducing the number of frames needed to transmit the same amount of data.
Reduced Overhead: By sending larger frames, the relative overhead for headers and acknowledgments is reduced.
Increased Efficiency: Larger frames mean fewer packets to process, leading to better utilization of network bandwidth and improved performance in high-throughput environments like storage networks.
Configuration: Requires support from all devices in the network path, including switches and network interface cards (NICs).
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains jumbo frames and their benefits in reducing network overhead.
Cisco Networking Academy: Provides training on network optimization techniques, including the use of jumbo frames.
Network+ Certification All-in-One Exam Guide: Covers advanced Ethernet features, including jumbo frames and their configuration for improved network performance.
B
Explanation:
Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. Configuring jumbo frames can reduce overhead and increase efficiency in storage networks by allowing more data to be sent in each frame, thus reducing the number of frames needed to transmit the same amount of data.
Reduced Overhead: By sending larger frames, the relative overhead for headers and acknowledgments is reduced.
Increased Efficiency: Larger frames mean fewer packets to process, leading to better utilization of network bandwidth and improved performance in high-throughput environments like storage networks.
Configuration: Requires support from all devices in the network path, including switches and network interface cards (NICs).
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains jumbo frames and their benefits in reducing network overhead.
Cisco Networking Academy: Provides training on network optimization techniques, including the use of jumbo frames.
Network+ Certification All-in-One Exam Guide: Covers advanced Ethernet features, including jumbo frames and their configuration for improved network performance.
Question #15
A storage network requires reduced overhead and increased efficiency for the amount of data being sent.
Which of the following should an engineer likely configure to meet these requirements>?
- A . Link speed
- B . Jumbo frames
- C . QoS
- D . 802.1q tagging
Correct Answer: B
B
Explanation:
Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. Configuring jumbo frames can reduce overhead and increase efficiency in storage networks by allowing more data to be sent in each frame, thus reducing the number of frames needed to transmit the same amount of data.
Reduced Overhead: By sending larger frames, the relative overhead for headers and acknowledgments is reduced.
Increased Efficiency: Larger frames mean fewer packets to process, leading to better utilization of network bandwidth and improved performance in high-throughput environments like storage networks.
Configuration: Requires support from all devices in the network path, including switches and network interface cards (NICs).
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains jumbo frames and their benefits in reducing network overhead.
Cisco Networking Academy: Provides training on network optimization techniques, including the use of jumbo frames.
Network+ Certification All-in-One Exam Guide: Covers advanced Ethernet features, including jumbo frames and their configuration for improved network performance.
B
Explanation:
Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. Configuring jumbo frames can reduce overhead and increase efficiency in storage networks by allowing more data to be sent in each frame, thus reducing the number of frames needed to transmit the same amount of data.
Reduced Overhead: By sending larger frames, the relative overhead for headers and acknowledgments is reduced.
Increased Efficiency: Larger frames mean fewer packets to process, leading to better utilization of network bandwidth and improved performance in high-throughput environments like storage networks.
Configuration: Requires support from all devices in the network path, including switches and network interface cards (NICs).
Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Explains jumbo frames and their benefits in reducing network overhead.
Cisco Networking Academy: Provides training on network optimization techniques, including the use of jumbo frames.
Network+ Certification All-in-One Exam Guide: Covers advanced Ethernet features, including jumbo frames and their configuration for improved network performance.
Question #18
An organization wants to ensure that incoming emails were sent from a trusted source.
Which of the following DNS records is used to verify the source?
- A . TXT
- B . AAAA
- C . CNAME
- D . MX
Correct Answer: A
A
Explanation:
A TXT record can be used to store SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) information, which help verify that an email has been sent from a trusted source.
A
Explanation:
A TXT record can be used to store SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) information, which help verify that an email has been sent from a trusted source.
Question #19
Early in the morning, an administrator installs a new DHCP server. In the afternoon, some users report they are experiencing network outages.
Which of the following is the most likely issue?
- A . The administrator didnot provision enough IP addresses.
- B . The administrator configured an incorrect default gateway.
- C . The administrator didnot provision enough routes.
- D . The administrator didnot provision enough MAC addresses.
Correct Answer: A
A
Explanation:
When a DHCP server is installed and not enough IP addresses are provisioned, users may start experiencing network outages once the available IP addresses are exhausted. DHCP servers assign IP addresses to devices on the network, and if the pool of addresses is too small, new devices or those renewing their lease may fail to obtain an IP address, resulting in network connectivity issues.
Reference: CompTIA Network+ study materials.
A
Explanation:
When a DHCP server is installed and not enough IP addresses are provisioned, users may start experiencing network outages once the available IP addresses are exhausted. DHCP servers assign IP addresses to devices on the network, and if the pool of addresses is too small, new devices or those renewing their lease may fail to obtain an IP address, resulting in network connectivity issues.
Reference: CompTIA Network+ study materials.
Question #20
A network administrator needs to set up a multicast network for audio and video broadcasting.
Which of the following networks would be the most appropriate for this application?
- A . 172.16.0.0/24
- B . 192.168.0.0/24
- C . 224.0.0.0/24
- D . 240.0.0.0/24
Correct Answer: C
C
Explanation:
Understanding Multicast:
Multicast IP Address Range: The multicast address range is from 224.0.0.0 to 239.255.255.255, designated for multicast traffic.
Multicast Applications:
Use Case: Multicast is used for one-to-many or many-to-many communication, suitable for applications like audio and video broadcasting where the same data is sent to multiple recipients simultaneously.
Appropriate Network Selection:
C
Explanation:
Understanding Multicast:
Multicast IP Address Range: The multicast address range is from 224.0.0.0 to 239.255.255.255, designated for multicast traffic.
Multicast Applications:
Use Case: Multicast is used for one-to-many or many-to-many communication, suitable for applications like audio and video broadcasting where the same data is sent to multiple recipients simultaneously.
Appropriate Network Selection: