http://www.isnare.com/?s=author&a=Chris+Bryant Computers and Technology Chris Bryant Wed, 08 Oct 2008 00:00:00 +0800 http://www.isnare.com/?aid=224906&ca=Computers+and+Technology More Cisco CCNA, CCENT, and CCNP candidates than ever before are putting together their own home labs for their certification exam study, and that's a great trend - there's nothing like learning on the real thing! Part of putting a home lab together is getting the right cables and understanding thei... Computers and Technology Chris Bryant Thu, 18 Sep 2008 00:00:00 +0800 http://www.isnare.com/?aid=200991&ca=Computers+and+Technology An important part of your Cisco CCENT and CCNA certification studies is learning the differences between RAM, ROM, NVRAM, and Flash memory. You better know the differences when it comes to working in real-life networks as well, because vital Cisco files are found in these memory types - and since so... Computers and Technology Chris Bryant Mon, 15 Sep 2008 00:00:00 +0800 http://www.isnare.com/?aid=176584&ca=Computers+and+Technology Earning your Cisco CCENT certification and passing the 640-822 exam demands that you master networking basics, and part of that is knowing how to work with both physical and virtual Local Area Networks (LANs). A physical LAN is a collection of PCs, cables, network cards, and other network hardware –... Computers and Technology Chris Bryant Sun, 10 Aug 2008 00:00:00 +0800 http://www.isnare.com/?aid=171098&ca=Computers+and+Technology You can’t earn your CCNP certification without passing the Cisco ONT exam, and queuing is a huge topic on that exam! Priority queuing, LLQ, weighted fair queuing – you’ll see them all and more on your ONT exam. Today, we’ll take a close look at priority queuing theory. Priority queuing is unique in... Computers and Technology Chris Bryant Sun, 10 Aug 2008 00:00:00 +0800 http://www.isnare.com/?aid=171938&ca=Computers+and+Technology A large part of your CCNP training for the ONT certification exam should be spent studying the various ways we can implement Quality of Service (QoS) on Cisco routers and switches. Before you start configuring your network’s devices, though, you’ve got to understand the three QoS models and their im... Computers and Technology Chris Bryant Sun, 10 Aug 2008 00:00:00 +0800 http://www.isnare.com/?aid=174994&ca=Computers+and+Technology In a previous Cisco CCENT certification exam tutorial, we talked about broadcasts and the potential of a broadcast storm. (If you missed that one, visit my website’s Tutorials section.) In today’s tutorial, we’ll discuss several different common network devices and how they help to limit broadcast p... Computers and Technology Chris Bryant Sun, 10 Aug 2008 00:00:00 +0800 http://www.isnare.com/?aid=191846&ca=Computers+and+Technology During your Cisco CCENT and CCNA studies, you'll see that so many great TCP features - the three-way handshake, windowing, sequence numbering, error detection and recovery - are strictly TCP features. UDP doesn't use any of them. Two questions come to mind: • Why doesn't UDP offer these features? •... Computers and Technology Chris Bryant Tue, 29 Jul 2008 00:00:00 +0800 http://www.isnare.com/?aid=158007&ca=Computers+and+Technology Sure, you have to know all about SVIs and multilayer switching to earn your CCNP, but you also need to know about them because they’re so commonplace in today’s networks! Why? We can use an SVI to allow inter-VLAN communication on a multilayer switch, eliminating the need for a separate router to ge... Computers and Technology Chris Bryant Sat, 15 Mar 2008 00:00:00 +0800 http://www.isnare.com/?aid=125517&ca=Computers+and+Technology EIGRP is a major topic for your CCNA and CCNP studies, and one basic skill you’ll need to pass your Cisco certification exams is to identify situations where you need to enable or disable split horizon. EIGRP commands tend to be a little different than those used with other protocols, so let’s take... Computers and Technology Chris Bryant Wed, 16 Jan 2008 00:00:00 +0800 http://www.isnare.com/?aid=117769&ca=Computers+and+Technology I've read some non-Cisco documentation that EIGRP will not allow adjacencies to form when secondary addresses are used. This is incorrect, but there is one common error that can result if both addresses are not secondary. To fully prepare for the 642-901 BSCI exam, you should know about this error....