Most network administrators have many tools at their disposal. In this video, you’ll learn about protocol analyzers, port scanners, device discovery, and speed test sites. << Previous: Wireless Issues Next Video: Command Line Tools >> Every network administrator will eventually be faced with a problem that says the network is slow. In actuality, the network […]
It’s difficult to troubleshooting something you can’t see. In this video, you’ll learn how to resolve wireless interference, manage channel usage, resolve roaming misconfigurations, and more. << Previous: Performance Issues Next Video: Software Tools >> On a wireless network, there are only so many frequencies available to be used by your access point and your
Wireless Issues – CompTIA Network+ N10-009 – 5.4 Read More »
There’s never enough bandwidth. In this video, you’ll learn how to troubleshoot congestion, bottlenecks, latency, packet loss, and jitter. << Previous: Routing and IP Issues Next Video: Wireless Issues >> Our networks run at a predefined speed. For example, a 1000BASE-T gigabit network operates and sends traffic at 1 gigabit per second. This network cannot
Performance Issues – CompTIA Network+ N10-009 – 5.4 Read More »
Configuring a router incorrectly can cause a number of network issues. In this video, you’ll learn about routing tables, the gateway of last resort, address pool exhaustion, and troubleshooting duplicate IP addresses. << Previous: Switching Issues Next Video: Performance Issues >> If you’re the administrator of routers, then you’re certainly familiar with the importance of
Routing and IP Issues – CompTIA Network+ N10-009 – 5.3 Read More »
An incorrectly configured switch can be a critical error. In this video, you’ll learn about stopping switching loops with spanning tree protocol, managing VLAN assignments, and best practices for configuring access control lists. << Previous: Hardware Issues Next Video: Routing and IP Issues >> As you’re probably aware, at the Mac address level, there’s no
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A single hardware issue can cause signficant problems on a production network. In this video, you’ll learn about PoE standards, transceiver mismatches, and how to calculate transceiver signal strength. << Previous: Interface Issues Next Video: Switching Issues >> If you’ve recently installed a telephone on a desktop, an access point, or a camera on your
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A network interface can tell a lot about the health of the network. In this video, you’ll learn about interface monitoring, CRC errors, runts, giants, drops, error disabled states, and port status messages. << Previous: Cable Issues Next Video: Hardware Issues >> Network administrators use a great deal of their time to monitor different interfaces
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If the physical layer isn’t right, the network will have big problems. In this video, you’ll learn about fiber mismatches, cable categories, crosstalk, EMI, attenuation, and proper termination. << Previous: Network Troubleshooting Methodology Next Video: Interface Issues >> When you’re working with fiber optics, you have to make sure that you’re using exactly the right
Network professionals solve problems every day. In this video, you’ll learn how a troubleshooting methodology can simplify complex issues and make it easier to identify and solve big problems. << Previous: Security Rules Next Video: Cable Issues >> When you work with networks, there will be problems that need to be resolved and issues that
Network Troubleshooting Methodology – CompTIA Network+ N10-009 – 5.1 Read More »
We often use rules to allow or prevent access to important resources. In this video, you’ll learn about access control lists, firewall rules, content filtering, screened subnets, and security zones. << Previous: Device Security Next Video: Network Troubleshooting Methodology >> One common way to limit the type of traffic that can traverse the network is
