IT Professional Curricula     Internet and Network Technologies Solution Area     CompTIA Network+     CompTIA Network+ N10-008

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Troubleshooting network connectivity is a complex responsibility that can require various approaches and techniques in order to resolve issues.
In this course, you’ll learn about using the appropriate network troubleshooting software tools and commands. You’ll explore software tools such as Wi-Fi analyzers and port scanners and learn about traditional command line tools and network platform commands. You'll also examine how to troubleshoot common wireless connectivity issues including issues relating to specifications and limitations. Next, you’ll learn about common considerations and issues pertaining to wireless connectivity. You’ll explore general network troubleshooting best practices as they relate to wired networks. Finally, you'll examine considerations such as routing tables, VLAN assignment, and other common issues.
This course is one of a collection of courses that prepares learners for the N10-008: CompTIA Network+ certification exam.

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Objectives

CompTIA Network+ (N10-008): Troubleshooting Network Issues discover the key concepts covered in this course recognize how to work with a packet sniffer to intercept and log network traffic describe how to use a port scanner to identify which ports are open on a network describe how to use a Wi-Fi analyzer to detect usage recognize when and how to use a bandwidth speed tester describe how to use other common software tools such as iPerf, NetFlow analyzers, Trivial File Transfer Protocol (TFTP) server, terminal emulator, and IP scanner describe how to use network troubleshooting command line tools, including ping, ipconfig, telnet, Nmap, and netstat outline the features and purpose of using Linux command line tools recognize how to troubleshoot wireless connectivity issues such as throughput, speed, distance, received signal strength indication (RSSI) signal strength, effective isotropic radiated power (EIRP), and power settings describe wireless connectivity considerations such as antennas, channel utilization, site surveys, and AP association time recognize common wireless connectivity issues including interference, channel overlap, antenna cable attenuation/signal loss, RF attenuation/signal loss, wrong SSID, incorrect passphrase, encryption protocol mismatch, insufficient wireless coverage, and captive portal issues describe the key considerations when troubleshooting wired networking issues, including device configuration review, routing tables, interface status, VLAN assignment, and network performance baselines describe how to troubleshoot issues relating to an incorrect or failed default gateway describe how to troubleshoot issues relating to an incorrectly configured netmask recognize how to troubleshoot issues caused by duplicate IP and MAC addresses recognize how to troubleshoot issues where names are not resolving describe how to troubleshoot issues caused by expired DHCP scopes and rogue DHCP servers recognize how to correct issues caused by expired IP addresses and incorrect system times describe how to troubleshoot issues caused by untrusted SSL certificates and blocked TCP/UDP ports recognize how to troubleshoot issues caused by incorrect firewall and ACL settings describe how to correct issues caused by hardware failures and unresponsive services outline the characteristics of and reason for common wired connectivity issues summarize the key concepts covered in this course