Network+ Exam Tutorial: Becoming A Master Troubleshooter by Chris Bryant
Passing your Network+ exam is the first step on the way to becoming a master network troubleshooter, and that's where you need to be. The average network admin spends 90% of their time troubleshooting and 10% installing hardware and software, so you better be good at troubleshooting! ... You'll develop your own style of troubleshooting as you gain more experience, but the following is a good outline to follow for any network issue. ... Is everyone on the network having the problem? ... In my experience, there are two kinds of network troubleshooters in the world: Those who take a...

Network+ / CCNA Certification Exam Tutorial: Port Numbers And Troubleshooting by Chris Bryant
Passing the Network+ and CCNA exams demands that you know quite a few port numbers, but they're important to know when working with real-world networks as well. Before we discuss why, here's a partial list of important port numbers to know for these certification exams: Ports 20 and 21 are used... I can tell you from personal experience that the key to becoming a world-class network troubleshooter is mastering the basics, and that includes knowing common port numbers. ... Let's say that you're in the middle of a relaxed day at your network monitoring console.

Cisco CCNA Certification: An Illustrated Guide To Ethernet CSMA/CD by Chris Bryant
When you're studying for your CCNA exams, you're going to study the theory of technologies we basically take for granted in networking. CSMA/CD is one of those technologies. It works beautifully and you don't even have to configure it. But to be an effective network troubleshooter (and to pass... In a separate tutorial, we'll discuss more Ethernet fundamentals and values you should know for your CCNA exams and to be a more effective network troubleshooter. ... (This type of bus is referred to as a shared bus.) If only one of the hosts on this network wanted to send data, there would be no...

How To Bridge Halo 2 by Brendan McCaffery
Well, I've figured out how to bridge Halo 2. Please, only use it to kick out modders. Don't abuse it. Don't be a poopface. Well anyways, this is how you bridge Halo 2. First, connect your router to your PC, which it should be already. Next, connect your PC to your Xbox. ... Continue to start up your Xbox then unplug your ethernet cable to get to the troubleshooter. ... Then, go to My Computer> View Network Connections> Highlight both Connections with the shift key(hold shift and click on both items).

Cisco CCNA / CCNP Certification Exam Tutorial: Troubleshooting EIGRP by Chris Bryant
Part of earning your CCNA and CCNP - especially passing the difficult CIT exam - is becoming a master network troubleshooter. Today, we'll take a look at troubleshooting EIGRP and spotting common errors. Most adjacency issues are easily resolved - mistyped IP address, bad wildcard mask in the... R2(config-if)#router eigrp 100 R2(config-router)#no auto R2(config-router)#network 10.1.1.0 0.0.0.255 R2(config-router)#network 172.12.23.0 0.0.0.255 The only one of the three networks that matches that network statement is 10.1.1.0 /24.

Maybe You Already Have Wireless and Don't Know It? by Tony Fitz
More and more laptops and desktop computers are coming pre-equipped with wireless networking devices -- it's so cheap that they might as well put it in, to have another thing to list in the system specifications. It is easy to tell if a desktop computer has wireless enabled. ... Take a look under 'Network adapters'. ... Windows should tell you why the device is not working at the moment, and may suggest that you go through its troubleshooter program. ... Ignore anything that says '10/100' or 'Ethernet' -- they're normal network connections, but not wireless ones.

Cisco Certification: The OSI Model, Part I by Chris Bryant
To conquer the Introduction To Cisco Networking exam, and to begin the process of becoming an expert network troubleshooter, you have to master the OSI model and learn what happens at each of the seven layers. In this three-part series, we'll examine each level of the OSI model, paying... However, keep in mind that Telnet is an Application layer service, not a Network layer service. ... Proper encapsulation of data for network transmission. ... Next up, the Session Layer! ... The Session layer of the OSI model basically acts as the manager for the entire model.

Is Your Laptop or Home Computer Wireless Enabled? by Kevin Erickson
Built in wireless capabilities are becoming almost standard equipment on most laptop and home computers these days for a couple of reasons. One of the primary reasons is cost. Adding wireless capacity is so inexpensive that it would be silly for the manufacturers not to add it. ... Take a look under Network adapters and ignore anything that says 10/100 or Ethernet because they are simply normal network connections -- not wireless ones. ... Windows should then tell you why the device is not working at the moment and may even suggest that you go through its troubleshooter program.

Cisco Certification: How To Become A Truly Valuable CCNA by Chris Bryant
I've been active in the Cisco Certification track for four years, working my way from the CCNA to the coveted Cisco Certified Internetwork Expert title, and during that time I've conducted job interviews and casual conversations with hundreds of CCNAs and CCNA candidates. ... No commands help you truly understand how things work in a Cisco network than show and debug commands. ... Simulators fail to help you develop the analytical and logical skills that you must have to be an effective troubleshooter.

Cisco Certification: Introduction To ISDN, Part V by Chris Bryant
The major reason I recommend getting your hands on real Cisco equipment rather than a simulator is that real Cisco routers give you the chance to practice and learn show and debug commands. The knowledge you acquire from debugs is invaluable. Frankly, it's this knowledge that puts you above the... Never practice debugs on a production network. ... Never, ever, ever practice debugs on a production network. ... R1#show isdn history-------------------------------------------------------------------------------- ISDN CALL...