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CompTIA Network+ certification is a globally recognized credential that is highly valued by employers. It is an entry-level certification that is ideal for individuals who are starting their careers in IT. CompTIA Network+ Certification Exam certification demonstrates your ability to design, configure, manage, and troubleshoot wired and wireless network solutions. It is also a prerequisite for many advanced certifications in the IT industry.
NEW QUESTION # 711
A network technician has determined the cause of a network disruption. Which of the following is the NEXT step for the technician to perform?
Answer: C
Explanation:
* A network technician should follow a network troubleshooting methodology to systematically identify and resolve network problems12.
* A network troubleshooting methodology consists of several steps, such as identifying the problem, establishing a theory of probable cause, testing the theory, implementing a solution, verifying functionality, and documenting the results12.
* In this scenario, the network technician has determined the cause of a network disruption, which means that they have completed the steps of identifying the problem, establishing a theory of probable cause, and testing the theory12.
* The NEXT step for the technician to perform is to establish a plan of action to resolve the issue, which means that they should define the steps, resources, and tools needed to implement a solution that can fix the network disruption12.
* Establishing a plan of action to resolve the issue is the next step, because it can help the technician to prepare for the implementation, avoid potential risks or complications, and communicate the plan to the stakeholders12.
* The other options are not the next step for the technician to perform, because they are either previous or subsequent steps in the network troubleshooting methodology12:
* A. Validating the findings in a top-to-bottom approach is a previous step, which is part of testing the theory of probable cause, where the technician should verify the network functionality and connectivity from the physical layer to the application layer12.
* B. Duplicating the issue, if possible, is a previous step, which is part of identifying the problem, where the technician should reproduce the symptoms and scope of the problem to confirm its existence and impact12.
* D. Documenting the findings and actions is a subsequent step, which is part of verifying functionality and preventing recurrence, where the technician should record the problem description, solution, and outcome for future reference and improvement12.
References:
* 1: Network Troubleshooting Methodology - N10-008 CompTIA Network+ : 5.1
* 2: CompTIA Network+ N10-008 Full Course for Beginners - Network Troubleshooting Methodology (5.1)
NEW QUESTION # 712
A network administrator is troubleshooting a connectivity performance issue. As part of the troubleshooting process, the administrator performs a traceout from the client to the server, and also from the server to the client. While comparing the outputs, the administrator notes they show different hops between the hosts. Which of the following BEST explains these findings?
Answer: A
Explanation:
Asymmetric routing is a situation in which the path taken by data packets between two points in a network is different in both directions. It can be caused by factors such as unequal cost paths, policy-based routing, load balancing, or network topology changes1 In this scenario, the network administrator is troubleshooting a connectivity performance issue, which could be affected by asymmetric routing. For example, if one path has more congestion, latency, or packet loss than the other, the performance of the communication between the client and the server will be degraded2 To diagnose the issue, the network administrator performs a traceout from the client to the server, and also from the server to the client. A traceout is a tool that shows the route and the number of hops that a packet takes to reach a destination. By comparing the outputs, the network administrator can identify if there is asymmetric routing in the network3 If the outputs show different hops between the hosts, it means that the packets are taking different paths in each direction, which is a sign of asymmetric routing. Therefore, the best answer is A. Asymmetric routing.
The other options are not as likely to explain the findings. A routing loop is a confusion about the reachability of a destination network, which causes packets to loop endlessly between two or more routers4 A switch loop is a situation in which there is more than one layer 2 path between two endpoints, which causes broadcast storms and MAC database instability5 An incorrect gateway is a configuration error that prevents a device from reaching the intended destination network6 None of these options would necessarily result in different hops between the hosts, as they would either cause the packets to be dropped, discarded, or delayed, but not rerouted. Therefore, the best answer is A. Asymmetric routing.
Reference:
https://en.wikipedia.org/wiki/Routing_loop
https://www.networkstraining.com/what-is-asymmetric-routing/
https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/ip-default-gateway-settings-assigned-incorrectly
https://superuser.com/questions/1715808/cant-access-router-settings-default-gateway-not-working-as-expected
NEW QUESTION # 713
Which of the following is most likely to be implemented to actively mitigate intrusions on a host device?
Answer: D
NEW QUESTION # 714
Logs show an unauthorized IP address entering a secure part of the network every night at 8:00 pm. The network administrator is concerned that this IP address will cause an issue to a critical server and would like to deny the IP address at the edge of the network. Which of the following solutions would address these concerns?
Answer: C
Explanation:
* An access control list (ACL) is a set of rules that defines which traffic is allowed or denied on a network device, such as a router or a firewall12.
* An ACL can be used to filter traffic based on various criteria, such as source or destination IP address, port number, protocol, or time of day12.
* By implementing an ACL on the edge router of the network, the network administrator can block the unauthorized IP address from entering the secure part of the network every night at 8:00 pm12.
* This solution would address the concerns of the network administrator, as it would prevent the unauthorized IP address from accessing the critical server or any other resource on the secure network12.
* Changing the VLAN of the web server (A) or changing the server's IP address (B) would not stop the unauthorized IP address from entering the network, as it could still scan the network for other open ports or vulnerabilities12.
* Instating a rule on the firewall connected to the web server (D) would only protect the web server, but not the rest of the secure network, from the unauthorized IP address12. References:
* CompTIA Network+ N10-008 Certification Study Guide, Chapter 4: Network Operations, Section 4.3:
Network Security Devices and Technologies, pp. 212-213.
* Professor Messer's CompTIA N10-008 Network+ Course, Section 4.3: Network Security Devices and
* Technologies, Video: Access Control Lists.
NEW QUESTION # 715
You are tasked with verifying the following requirements are met in order to ensure network security.
Requirements:
Datacenter
Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage Provide a dedicated server to resolve IP addresses and hostnames correctly and handle port 53 traffic Building A Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage Provide devices to support 5 additional different office users Add an additional mobile user Replace the Telnet server with a more secure solution Screened subnet Ensure network is subnetted to allow all devices to communicate properly while minimizing address space usage Provide a server to handle external 80/443 traffic Provide a server to handle port 20/21 traffic INSTRUCTIONS Drag and drop objects onto the appropriate locations. Objects can be used multiple times and not all placeholders need to be filled.
Available objects are located in both the Servers and Devices tabs of the Drag & Drop menu.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Answer:
Explanation:
Top left subnet - 206.208.134.0/28
Top right subnet - 10.72.63.0/28
Bottom subnet - 192.168.11.0/28
Screened Subnet devices - Web server, FTP server
Building A devices - SSH server top left, workstations on all 5 on the right, laptop on bottom left DataCenter devices - DNS server.
NEW QUESTION # 716
......
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