CompTIA N10-008 Practice Test - Questions Answers, Page 75

Before disposing of a network router, it is important to back up and erase the configuration to prevent unauthorized access to sensitive data and network settings. A network router may contain information such as passwords, IP addresses, firewall rules, VPN settings, and other network parameters that could be exploited by hackers or malicious users. By backing up the configuration, you can preserve the network settings for future reference or reuse. By erasing the configuration, you can wipe out the data and restore the router to its factory default state.

SLAAC (Stateless Address Autoconfiguration) is a mechanism that enables each host on the network to auto-configure a unique IPv6 address without any device keeping track of which address is assigned to which node12.SLAAC uses link-local addresses and the interface's MAC address or a random number to generate the host portion of the IPv6 address2.SLAAC also relies on Router Solicitation (RS) and Router Advertisement (RA) messages to obtain the network prefix and other information from a router12. Therefore, to change an entire subnet of SLAAC-configured workstation addresses, the network engineer needs to change the address prefix in a router and let the router advertise the new prefix with an ND (Neighbor Discovery) message.This way, the workstations will receive the new prefix and update their IPv6 addresses accordingly3.

Reference 1- IPv6 Stateless Address Auto-configuration (SLAAC) | NetworkAcademy.io 2- IPv6 SLAAC -- Stateless Address Autoconfiguration - Study-CCNA 3- Mastering IPv6 SLAAC Concepts and Configuration - Cisco Press

Audit logs are records of the actions performed by users or processes on a system or network device. They can provide information about who made what changes, when, and why. Audit logs are essential for detecting and investigating security incidents, as well as for ensuring compliance with policies and regulations. Audit logs can help the network security engineer to identify the source of the unauthorized configuration changes to the boundary firewall, as well as the scope and impact of the changes.

Reference 1- Changes to Cyber Essentials requirements -- April 2021 update 2- 8 Firewall Best Practices for Securing the Network 3- How to secure your network boundaries with a firewall

A DHCP relay is a network device that forwards DHCP requests from clients on one subnet to a DHCP server on another subnet. This allows the DHCP server to assign IP addresses and other network configuration parameters to clients across different subnets. A DHCP scope is a range of IP addresses that a DHCP server can assign to clients. A DHCP snooping is a security feature that filters and validates DHCP messages on a switch. A DHCP reservation is a way to assign a specific IP address to a specific client based on its MAC address.Reference: Part 2 of the current page talks about DHCP relay and its functions. You can also find more information about DHCP relay on [this page].

WPA2 and EAP are two authentication protocols that can be used to secure a basic wireless network. WPA2 stands for Wi-Fi Protected Access 2 and it is a security standard that provides strong encryption and authentication for wireless networks. WPA2 supports two modes: personal and enterprise. In personal mode, WPA2 uses a pre-shared key (PSK) that is shared among all wireless devices. In enterprise mode, WPA2 uses an authentication server, such as a RADIUS server, to verify the identity of each wireless device. EAP stands for Extensible Authentication Protocol and it is a framework that allows different methods of authentication to be used over wireless networks. EAP works with WPA2 enterprise mode to provide more flexibility and security for wireless authentication. EAP supports various methods, such as EAP-TLS, EAP-FAST, PEAP, and LEAP, that use certificates, passwords, or tokens to authenticate wireless devices.

An NDA, or non-disclosure agreement, is a legal contract that binds an employee to keep certain information confidential and not share it with unauthorized parties. This information may include trade secrets, intellectual property, business strategies, customer data, or other sensitive or proprietary information that gives the company a competitive advantage.An NDA protects the company's interests and prevents the employee from disclosing or using the information for personal gain or malicious purposes1.

Reference 1- 10 Types of Employment Contracts | Indeed.com

Jitter is the variation in the delay of data packets over a network. It is caused by factors such as network congestion, routing changes, packet loss, or improper queuing. Jitter affects the quality of VoIP calls because it can cause gaps, distortion, or out-of-order delivery of voice data.Jitter can be measured by the difference between the expected and actual arrival times of packets2. To reduce jitter, VoIP systems use buffers to store and reorder packets before playing them back.However, too much buffering can also increase latency, which is the total time it takes for data to travel from one point to another3.

Reference 2- VoIP Troubleshooting: 5 Fixes for Common Connection Issues - Nextiva 3- Troubleshooting VoIP --- Is it You or the Network? - PingPlotter

Using the cloud as a redundant data center means that the company does not need to invest in building and maintaining a physical backup site, which can be costly and time-consuming. Instead, the company can pay for the cloud services as needed, which can reduce the initial capital expenses and operational costs. However, this does not mean that the other options are true. Changing cloud providers may not be easy due to compatibility, contractual, or regulatory issues. Security for company data may not be better in the cloud, depending on the cloud provider's policies and practices. The need for backups is not eliminated, as the cloud data still needs to be protected from loss, corruption, or unauthorized access.

Part 1 of current page talks about how Bing is your AI-powered copilot for the web and provides various examples of how it can help you with different tasks, such as writing a joke, creating a table, or summarizing research. However, it does not mention anything about using the cloud as a redundant data center.

Part 2 of current page shows the search results for ''ai powered search bing chat'', which include web, image, and news results. However, none of these results seem to be relevant to the question, as they are mostly about Bing's features, products, or announcements, not about cloud computing or data centers.

Therefore, I cannot find the answer or the explanation from the current page. I have to use my own knowledge and information from other sources to verify the answer and provide a short but comprehensive explanation. I will cite these sources using numerical references.

: CompTIA Network+ Certification Exam Objectives, Version 8.0, Domain 3.0: Network Operations, Objective 3.4: Given a scenario, use appropriate resources to support configuration management, Subobjective 3.4.2: Cloud-based configuration management, https://www.comptia.jp/pdf/comptia-network-n10-008-exam-objectives.pdf

: Cloud Computing: Concepts, Technology & Architecture, Chapter 9: Fundamental Cloud Security, Section 9.1: Cloud Security Threats, https://ptgmedia.pearsoncmg.com/images/9780133387520/samplepages/9780133387520.pdf

: Cloud Computing: Principles and Paradigms, Chapter 19: Data Protection and Disaster Recovery for Cloud Computing, Section 19.1: Introduction, https://onlinelibrary.wiley.com/doi/pdf/10.1002/9780470940105.ch19

NTP (Network Time Protocol) is a protocol that synchronizes the clocks of network devices with a reference time source. NTP uses a hierarchical system of time sources, called strata, to distribute the time information. A stratum 0 device is the most accurate time source, such as an atomic clock or a GPS receiver, but it is not directly accessible across a network connection. A stratum 1 device is a network device that is directly connected to a stratum 0 device, such as a dedicated NTP server or a router with a GPS antenna, and it acts as a primary time server for other network devices. A stratum 2 device is a network device that synchronizes its time with a stratum 1 device, and so on. The higher the stratum number, the lower the accuracy and reliability of the time source. A stratum 16 device is a network device that has no valid time source and is considered unsynchronized.

Part 1 of current page talks about how Bing is your AI-powered copilot for the web and provides various examples of how it can help you with different tasks, such as writing a joke, creating a table, or summarizing research. However, it does not mention anything about NTP or time sources.

Part 2 of current page shows the search results for ''ai powered search bing chat'', which include web, image, and news results. However, none of these results seem to be relevant to the question, as they are mostly about Bing's features, products, or announcements, not about NTP or time sources.

Therefore, I cannot find the answer or the explanation from the current page. I have to use my own knowledge and information from other sources to verify the answer and provide a short but comprehensive explanation. I will cite these sources using numerical references.

: CompTIA Network+ Certification Exam Objectives, Version 8.0, Domain 2.0: Infrastructure, Objective 2.5: Given a scenario, implement network time synchronization, Subobjective 2.5.1: NTP, https://www.comptia.jp/pdf/comptia-network-n10-008-exam-objectives.pdf

: Network Time Protocol (NTP), https://www.cisco.com/c/en/us/about/press/internet-protocol-journal/back-issues/table-contents-58/154-ntp.html

: How NTP Works, https://www.meinbergglobal.com/english/info/ntp.htm