CompTIA N10-008 Practice Test - Questions Answers, Page 68

tcpdump is a command-line tool that can capture and analyze network traffic on a given interface. tcpdump can verify the status of NAT by showing the source and destination IP addresses of the packets before and after they pass through the ISP router that translates traffic destined for the internet. tcpdump can also show the NAT protocol and port numbers used by the router. nmap, ipconfig, and tracert are not suitable tools for verifying the status of NAT, as they do not show the IP address translation process.

Reference

1: Network Address Translation -- N10-008 CompTIA Network+ : 1.4

2: CompTIA Network+ N10-008 Certification Study Guide, page 95-96

3: CompTIA Network+ N10-008 Exam Subnetting Quiz, question 16

4: CompTIA Network+ N10-008 Certification Practice Test, question 7

EIGRP stands for Enhanced Interior Gateway Routing Protocol, which is a hybrid routing protocol that uses a successor and a feasible successor to determine the best route to a destination. A successor is the next-hop router that has the lowest cost (or metric) to reach the destination, and a feasible successor is a backup router that has a cost that is less than the cost of the successor. EIGRP uses the successor and the feasible successor to achieve fast convergence and load balancing. EIGRP also uses a Diffusing Update Algorithm (DUAL) to maintain the routing table and avoid routing loops. IS-IS, OSPF, and BGP are other routing protocols that do not use a successor and a feasible successor, but rather use different algorithms and criteria to select the best route.

Reference

1: EIGRP -- N10-008 CompTIA Network+ : 2.1

2: CompTIA Network+ N10-008 Certification Study Guide, page 150-151

3: CompTIA Network+ N10-008 Exam Subnetting Quiz, question 20

4: CompTIA Network+ N10-008 Certification Practice Test, question 9

Input sanitization is the process of validating and filtering the user input to prevent malicious code or commands from being executed on the web server or the web browser. Input sanitization can prevent this type of attack, which is called cross-site scripting (XSS), by removing or escaping any special characters or scripts that are not expected or allowed in the input field. Input sanitization can be implemented on the server-side or the client-side, or both, to enhance the security of the web application.

Reference

1: Web Application Attacks -- N10-008 CompTIA Network+ : 3.2

2: CompTIA Network+ N10-008 Certification Study Guide, page 317

3: CompTIA Network+ N10-008 Exam Subnetting Quiz, question 15

4: CompTIA Network+ N10-008 Certification Practice Test, question 6

PII stands for Personally Identifiable Information, which is any data that can be used to identify, contact, or locate a specific individual, such as name, address, phone number, email, social security number, and so on. PII should be safeguarded during an incident to protect the privacy and security of the individuals involved, and to comply with the legal and ethical obligations of the organization. One way to safeguard PII during an incident is to implement data encryption, which is a process of transforming data into an unreadable format that can only be accessed by authorized parties who have the decryption key. Data encryption can prevent unauthorized access, modification, or disclosure of PII by malicious actors or third parties. Another way to safeguard PII during an incident is to create a standardized procedure for deleting data that is no longer needed, such as after the incident is resolved or the investigation is completed. Deleting data that is no longer needed can reduce the risk of data breaches, data leaks, or data theft, and can also save storage space and resources. A standardized procedure for deleting data can ensure that the data is erased securely and completely, and that the deletion process is documented and audited.

Reference

1: CompTIA Network+ N10-008 Certification Study Guide, page 304-305

2: CompTIA Network+ N10-008 Exam Subnetting Quiz, question 13

3: CompTIA Network+ N10-008 Certification Practice Test, question 5

4: Data Encryption -- N10-008 CompTIA Network+ : 3.1

A role-based access control (RBAC) policy is a security measure that assigns permissions and privileges to users based on their roles and responsibilities within an organization. RBAC helps to enforce the principle of least privilege, which states that users should only have the minimum level of access required to perform their tasks. RBAC also helps to prevent unauthorized access, modification, or misuse of sensitive data or resources by limiting the scope and impact of user actions.

A software patching policy, firewalls on the software development servers, and longer and more complex password requirements are all good security practices, but they do not directly address the issue of preventing the former software developer from modifying code. A software patching policy ensures that software is updated regularly to fix bugs and vulnerabilities, but it does not prevent a user from introducing new code changes. Firewalls on the software development servers protect the servers from external attacks, but they do not prevent a user from accessing the servers internally. Longer and more complex password requirements make it harder for attackers to guess or crack passwords, but they do not prevent a user from using their own valid credentials.

Reference

1: Role-Based Access Control (RBAC) - Definition and Examples

2: Network+ (Plus) Certification | CompTIA IT Certifications

3: [What is the Principle of Least Privilege? - Definition from Techopedia]

An extended service set (ESS) is a type of SSID that allows multiple access points (APs) to share the same SSID and provide seamless roaming for wireless clients. An ESS consists of two or more basic service sets (BSSs), which are individual APs with their own SSIDs. A distribution system (DS), such as a wired Ethernet LAN, connects the BSSs and enables data transfer between them. A wireless client can associate with any AP in the ESS and move from one BSS to another without losing connectivity or reauthenticating.

CompTIA Network+ N10-008 Certification Exam Objectives, page 51

CompTIA Network+ Cert Guide: Wireless Networking, page 12

Plenum cable is the most appropriate to use when running bulk cables in ceilings because it is designed to meet fire safety standards and reduce the risk of toxic smoke in plenum spaces, which are areas with air flow above or below floors.

The distribution layer is the layer that connects the access layer to the core layer in a hierarchical network design. The distribution layer is responsible for routing, filtering, and policy enforcement between the LAN and the WAN. A router is a layer 3 device that can perform these functions and connect to different WAN technologies.

CompTIA Network+ N10-008 Certification Study Guide, page 151

CompTIA Network+ N10-008 Cert Guide, Deluxe Edition, page 322

CompTIA Network+ N10-008 Exam Cram, page 233

The most likely reason why only eight cameras turn on is that the PoE switch does not have enough power budget to supply all 12 cameras. The engineer should check the voltage and wattage ratings of the PoE switch and the cameras, and make sure they are compatible and sufficient. The Ethernet cable type, transceiver compatibility, and DHCP addressing are less likely to cause this problem, as they would affect the data transmission rather than the power delivery.

CompTIA Network+ N10-008 Certification Study Guide, page 181

CompTIA Network+ N10-008 Cert Guide, Deluxe Edition, page 352

PoE Troubleshooting: The Common PoE Errors and Solutions3