CompTIA Updated N10-008 Exam Questions and Answers by luella

• The command show interface is used to display information about the status, speed, duplex mode, and other parameters of the network interfaces on a device. It can also show the number of packets sent and received, the error rate, and the utilization rate of each interface.
• The command can help determine whether an LACP bundle is fully operational by showing the aggregated bandwidth, the load balancing method, the active and standby links, and the LACP protocol status of each interface in the bundle.
• LACP (Link Aggregation Control Protocol) is a protocol that allows multiple physical links to be combined into a logical link, or a bundle, to increase the bandwidth and provide redundancy. LACP is also known as IEEE 802.3ad or EtherChannel.
• The command show config is used to display the current configuration of the device, such as the hostname, the IP addresses, the routing protocols, the security settings, and the interface settings. It does not show the operational status of the interfaces or the LACP bundle.
• The command show route is used to display the routing table of the device, which contains the destination networks, the next-hop addresses, the interface names, and the metrics of the routes. It does not show the operational status of the interfaces or the LACP bundle.
• The command show arp is used to display the ARP (Address Resolution Protocol) cache of the device, which contains the mappings between the IP addresses and the MAC addresses of the devices on the local network. It does not show the operational status of the interfaces or the LACP bundle. References:
• CompTIA Network+ N10-008 Study Guide, Chapter 2: Network Devices and Technologies, Section 2.1: Explain the functions and purposes of various network devices, Page 77-78
• Professor Messer’s Network+ N10-008 Course Notes, Page 13
• Professor Messer’s Network+ N10-008 Video Training Course, Section 2.1: Network Devices, Video 2.1.6: Link Aggregation

Network Time Protocol (NTP) is a protocol used to maintain a highly accurate and reliable clock time on all devices within a network. NTP works by synchronizing the time of all the devices within a network to a single, highly accurate time source. This allows for the time of all the devices to be kept in sync with each other, ensuring a consistent and reliable time source for all devices within the network.

HIDS (host-based intrusion detection system) is a type of security software that monitors and analyzes the activity on a host device, such as a computer or a server. HIDS can detect and alert on intrusions, such as malware infections, unauthorized access, configuration changes, or policy violations. HIDS can also actively mitigate intrusions by blocking or quarantining malicious processes, files, or network connections1.

HIPS (host-based intrusion prevention system) is similar to HIDS, but it can also prevent intrusions from happening in the first place by enforcing security policies and rules on the host device2. MDS (multilayer switch) is a network device that combines the functions of a switch and a router, and it does not directly protect a host device from intrusions3. NIPS (network-based intrusion prevention system) is a network device that monitors and blocks malicious traffic on the network level, and it does not operate on the host device level4.

A mesh network is the best solution for creating a wireless field network to provide reliable service to public safety vehicles. A mesh network is a type of wireless network that consists of multiple nodes that communicate with each other directly or through intermediate nodes, forming a web-like topology. A mesh network does not rely on a central access point or router, but rather on the cooperation and coordination of the nodes themselves. A mesh network has several advantages for public safety applications, such as12:

• High availability and resilience: A mesh network can automatically route around failures or congestion, ensuring that the network remains operational even if some nodes are damaged or disconnected. A mesh network can also self-heal and self-configure, adapting to changes in the network topology or environment.
• Extended coverage and scalability: A mesh network can extend the wireless signal beyond the range of a single node, by using other nodes as relays or repeaters. A mesh network can also accommodate more nodes and devices, by adding more links and paths between them.
• Low cost and easy deployment: A mesh network can reduce the cost and complexity of installing and maintaining a wireless infrastructure, by eliminating the need for expensive cabling, towers, or antennas. A mesh network can also be deployed quickly and flexibly, by simply adding or removing nodes as needed.

A mesh network is especially suitable for public safety vehicles, because it can provide reliable wireless communication in challenging scenarios, such as12:

• Disaster response: A mesh network can be deployed rapidly in areas where the existing wireless infrastructure is damaged or unavailable, such as after an earthquake, flood, or fire. A mesh network can also support emergency services, such as fire fighting, search and rescue, or medical assistance, by enabling data, voice, and video transmission among the responders and command centers.
• Mobile surveillance: A mesh network can enable real-time monitoring and control of public safety vehicles, such as police cars, ambulances, or drones, by providing high-bandwidth and low-latency wireless connectivity. A mesh network can also support video streaming, location tracking, remote sensing, or analytics applications for public safety purposes.
• Event management: A mesh network can enhance the security and efficiency of large-scale events, such as concerts, festivals, or parades, by providing wireless coverage and capacity for the event organizers and participants. A mesh network can also support crowd management, traffic control, or public announcement applications for event management.

The other options are not the best solutions for creating a wireless field network to provide reliable service to public safety vehicles. An ad hoc network is a type of wireless network that consists of devices that communicate with each other directly without any central coordination or infrastructure. An ad hoc network is simple and flexible, but it has limited scalability and performance3. A point-to-point network is a type of wireless network that consists of two devices that communicate with each other over a single link. A point-to-point network is fast and secure, but it has limited coverage and functionality. An infrastructure network is a type of wireless network that consists of devices that communicate with each other through an access point or router. An infrastructure network is stable and robust, but it has high cost and complexity.