N10-008 Exam Dumps - CompTIA Network+ Questions and Answers

 Flow data is a summary of network traffic that can be used to monitor and analyze network performance, utilization, and security. Flow data can provide information such as source and destination IP addresses, ports, protocols, bytes, packets, and timestamps. Flow data can be collected using protocols such as NetFlow, sFlow, or IPFIX. Flow data can help identify the source of network saturation without requiring a full packet capture, which would be impractical on a 40Gb connection with a 10Gb server.

References:

• CompTIA Network+ N10-008 Certification Exam Objectives, page 51
• CompTIA Network+ N10-008 Cert Guide, Chapter 11: Switching Technologies2

Shoulder surfing is the social engineering attack where an attacker watches a user log in to a corporate system and writes down the user’s log-in credentials. Social engineering is a type of attack that exploits human psychology and behavior to manipulate or trick people into revealing sensitive information or performing malicious actions. Shoulder surfing is a form of social engineering that involves observing or eavesdropping on someone’s screen, keyboard, or paper documents to obtain confidential information such as passwords, PINs, or credit card numbers. Shoulder surfing can be done in person or remotely using cameras or other devices. Shoulder surfing can be prevented by using privacy filters, locking screens, shielding keyboards, or being aware of one’s surroundings. References: [CompTIA Network+ Certification Exam Objectives], What Is Shoulder Surfing? | Definition & Examples | Forcepoint

An access control vestibule, also known as a mantrap, is a physical security access control system that consists of a small space with two sets of interlocking doors. The first set of doors must close before the second set opens, preventing unauthorized individuals from following authorized individuals into facilities with controlled access. This activity, also known as tailgating, results in unauthorized access to the facility. An access control vestibule can help deter and detect tailgating attempts, as well as provide a containment area while authorization for physical access is verified.

References

Access Control Vestibules: Types and Peculiarities

Mantrap (access control)

PE-3 (8): Access Control Vestibules

• DNS poisoning is a type of attack that exploits vulnerabilities in the Domain Name System (DNS) to redirect traffic intended for a legitimate website to a malicious site. This can allow attackers to collect sensitive information such as login credentials, or infect visitors with malware12.
• DNS poisoning can be achieved by injecting malicious A records into internal name resolution servers. An A record is a type of DNS record that maps a domain name to an IP address. By changing the A record of a legitimate domain to point to a malicious IP address, an attacker can trick users into visiting the wrong site3.
• The other options are not correct because:

References:

• 1: Domain Hijacking vs DNS Poisoning: Do You Know the Difference? - Heimdal Security
• 2: What is an on-path attacker? - Cloudflare
• 3: What are the types of DNS spoofing? - Information Security Stack Exchange

• The question asks about the best configuration for the WLAN being tested, which involves channel bonding on an 802.11ac AP. Channel bonding is a technique that combines two or more adjacent channels into a wider channel to increase the bandwidth and throughput of the wireless network1.
• The answer is to set up the AP to perform a dynamic selection of the frequency according to regulatory requirements. This means that the AP will automatically choose the best available channel and adjust the transmit power based on the local regulations and the interference level2. This way, the AP can avoid using the channels that are occupied by the government radio system, which may have higher priority and authority over the spectrum3.
• Upgrading the equipment to an AP that supports manual configuration of the EIRP power settings is not the best solution, because it does not address the channel selection issue. EIRP stands for Effective Isotropic Radiated Power, which is the total power radiated by the antenna in all directions. Manual configuration of the EIRP may allow the administrator to increase or decrease the signal strength, but it may also violate the regulatory limits or cause more interference with other devices.
• Switching to 802.11n, disabling channel auto-selection, and enforcing channel bonding on the configuration is also not the best solution, because it may degrade the performance and compatibility of the WLAN. 802.11n is an older standard than 802.11ac, which has lower maximum data rates and fewer features. Disabling channel auto-selection may prevent the AP from adapting to the changing environment and finding the optimal channel. Enforcing channel bonding may increase the bandwidth, but it may also increase the interference and reduce the number of available channels.
• Deactivating the band 5GHz to avoid interference with the government radio is not the best solution, because it may limit the functionality and capacity of the WLAN. The 5GHz band has more channels and less congestion than the 2.4GHz band, which makes it suitable for high-performance applications and devices. Deactivating the band 5GHz may force the WLAN to use only the 2.4GHz band, which may reduce the speed, range, and reliability of the wireless network. References:
• Channel Bonding
• Dynamic Frequency Selection
• Radio Regulations
• [EIRP Calculator]
• [EIRP and Regulatory Domains]
• [802.11n vs 802.11ac]
• [Channel Auto-Selection]
• [Channel Bonding and Interference]
• [5GHz vs 2.4GHz]
• [5GHz Band Deactivation]

A PAN stands for Personal Area Network and it is a type of network that connects devices within a small range, such as a few meters. A PAN can use wireless technologies such as Bluetooth or Wi-Fi to interconnect devices such as tablets, smartphones, and laptops. A technician can use a PAN to gain connectivity among these tools and troubleshoot the switch.

References: Network+ Study Guide Objective 1.2: Explain devices, applications, protocols and services at their appropriate OSI layers.

Duplex settings determine how data is transmitted and received over a network. If the devices have inconsistent duplex settings, such as half-duplex and full-duplex, they may experience performance issues, collisions, and errors. To troubleshoot the issue, the technicians should check the devices’ duplex settings and make sure they match the network’s configuration.

References:

• Gigabit Ethernet does not work - Microsoft Community1
• Network Tests: Are We Getting Gigabit Performance? - Tom’s Hardware2
• CompTIA Network+ N10-008 Exam Objectives

https://www.comptia.org/certifications/network#examdetails

• The question asks about the topology that requires the most connections when designing a network.
• A topology is the physical or logical arrangement of devices and links on a network. Different topologies have different advantages and disadvantages in terms of cost, performance, reliability, scalability, and security.
• The four topologies mentioned in the question are:
• Therefore, the answer is A, a mesh topology, as it requires the most connections when designing a network.

References:

• CompTIA Network+ N10-008 Study Guide, Chapter 1: Networking Concepts, Section 1.1: Network Topologies and Technologies, Pages 8-11
• Professor Messer’s CompTIA N10-008 Network+ Course, Video 1.1: Network Topologies and Technologies, Part 1
• Network + N10-008 practice exam, Question 989, Answer A, Explanation

When running Ethernet cables through raised ceilings, plenum-rated cables are the safest option. They are designed to slow the spread of flames and reduce the amount of toxic smoke produced during a fire, making them suitable for spaces with airflow for heating and air conditioning systems. References: CompTIA Network+ Certification Exam Objectives

To troubleshoot high latency issues when accessing web servers, a technician should use tools like ping, nmap, and traceroute. Ping can verify the reachability of a server and measure round-trip time. Nmap can scan for open ports and detect services running on the server. Traceroute can identify the path traffic takes to reach the server and pinpoint where delays occur. References: CompTIA Network+ Certification Exam Objectives1.

• Default Gateway: The default gateway is the IP address of the router that connects the local network to external networks (such as the internet). When a packet’s destination address is outside the local network, it is sent to the default gateway for further routing.

References:

• Professor Messer - Network+ Certification Course
• CompTIA Network+ N10-008 Study Guide 11
• Studocu - To route a packet outside the local network, a packet must be generated at the network layer

The problem is likely related to DNS resolution, as the clients are able to ping the server's IP address but not access the web resource via URL. The other answers do not address this issue. Configuring A records for the web server will ensure that clients are able to access the web resource via its domain name.

Anycast addressing is a network addressing and routing methodology in which a single destination address has multiple routing paths to two or more endpoint destinations. Routers will select the desired path on the basis of number of hops, distance, lowest cost, latency measurements or based on the least congested route. Anycast addressing is designed to provide high availability and low latency for services that have multiple instances across the world, such as DNS servers. By using anycast addressing, the customer can ensure that servers are accessed based on whichever one is topographically closest to the destination. If the server does not respond, then the next topographically closest server should respond. References: [CompTIA Network+ Certification Exam Objectives], [Anycast - Wikipedia]

• A VLAN is a virtual local area network that logically separates devices on the same physical network. VLANs can improve network performance, security, and management by reducing broadcast domains and isolating traffic.
• A DHCP reservation is a feature that allows a network administrator to assign a specific IP address to a device based on its MAC address. This ensures that the device always receives the same IP address from the DHCP server, even if the lease expires or the device reboots.
• A networked printer is a device that can be shared by multiple users on the same network. A networked printer typically has a built-in network interface card (NIC) that allows it to communicate with other devices using TCP/IP protocols.
• A print server is a device or a software application that manages the printing requests from multiple clients. A print server can also provide additional features such as print queue management, printer driver installation, and printer status monitoring.
• A subnet is a logical division of an IP network that allows devices to communicate more efficiently and securely. A subnet is defined by a network address and a subnet mask, which determine the range of valid IP addresses within the subnet. Devices on the same subnet can communicate directly with each other without the need for a router.
• A ping is a network diagnostic tool that tests the connectivity and reachability between two devices by sending and receiving echo packets. A ping request can fail for various reasons, such as network congestion, firewall settings, routing issues, or device configuration errors.
• Based on the question, the networked printer is unavailable because it cannot be pinged from the print server in the same subnet. This means that there is a problem with the layer 2 connectivity between the two devices, which is determined by the MAC addresses and the VLANs. The most likely cause of this problem is that the printer and the print server are on different VLANs, which prevents them from communicating with each other. The other options are less likely because they affect the layer 3 connectivity, which is determined by the IP addresses and the gateways. A DNS failure would not affect the ping request, since it uses IP addresses and not hostnames. A DHCP scope exhaustion would not affect the printer, since it has a DHCP reservation that guarantees its IP address. An incorrect gateway would not affect the communication within the same subnet, since it is only used for routing packets to other networks. References:
• CompTIA Network+ N10-008 Study Guide, Chapter 2: Network Devices and Technologies, Section 2.2: Network Device Functions and Features, Subsection: Print Servers, pp. 76-77.
• CompTIA Network+ N10-008 Study Guide, Chapter 3: Network Operations, Section 3.3: Network Configuration Management, Subsection: DHCP, pp. 144-146.
• CompTIA Network+ N10-008 Study Guide, Chapter 4: Network Security, Section 4.2: Network Segmentation and Isolation, Subsection: VLANs, pp. 202-204.
• Professor Messer’s CompTIA N10-008 Network+ Course Notes, Section 1.5: Network Troubleshooting Methodology, Subsection: Identify the Problem, pp. 16-17.
• Professor Messer’s CompTIA N10-008 Network+ Course Notes, Section 2.2: Network Devices, Subsection: Print Servers, p. 28.
• Professor Messer’s CompTIA N10-008 Network+ Course Notes, Section 2.6: Network Addressing, Subsection: DHCP, p. 38.
• Professor Messer’s CompTIA N10-008 Network+ Course Notes, Section 2.7: Network Addressing, Subsection: Subnetting, p. 39.
• Professor Messer’s CompTIA N10-008 Network+ Course Notes, Section 3.5: Network Segmentation, Subsection: VLANs, p. 58.

The logging level debugging is the highest level of logging, which means that the switch will log every possible event, including low-priority and verbose messages. This can result in excessive amounts of data being sent to the syslog server, which can affect the performance and storage of the server. To fix the issue, the technician should adjust the logging level to a lower value, such as informational, warning, or error, depending on the desired level of detail and severity. This will reduce the amount of log data generated by the switch and only send the relevant and necessary messages to the syslog server.

https://betterstack.com/community/guides/logging/log-levels-explained/