Posts tagged “CCNA Study Guide”
Network Simulator Update – Beta is Live!
As you can see I’ve opened up my Online Network Simulator (beta) to the general public! It still has a long way to go, but with your support I’ll be able to release version 1 soon. Some of you may be wondering why you need to pay for my Online Network Simulator (beta) when I [...]
Network Simulator Update – Supporting Multiple Interfaces
I was able to get a lot of coding in today and was able to figure out a big hurdle that had slowed me down for awhile. The big hurdle was figuring out how I could support multiple interfaces because of the way I was keeping track of settings for each interface I wasn’t able [...]
Why I’m Making My Own Online Router Simulator
I’m a huge fan of web applications and I think EVERY application that we use should be run in the cloud and not on our local computers.
One of my favorite new apps is notepad.cc which has completely replaced windows notepad for me. I used to use notepad a lot and would end up with dozens of different windows open. Now I can keep everything organized in my web browser and I can…
Introduction to Access Control Lists
Access Control Lists (ACLs) are used to add specific instructions to how your router processes certain kinds of packets. ACLs are used to provide Quality of Service, NAT, security, and many other things. Because ACLs can be used in many different instances you are going to…
Introduction to RIPng
The RIPng routing protocol was created to keep the simplicity of RIPv1 and RIPv2, but provide support for IPv6 ip addresses. The ‘ng’ attached to ‘RIP’ stands for Next Generation. Besides the additional support for IPv6 and some minor tweaks that come along with that RIPng is still very similar to…
Introduction to Routing Protocols
Unless the network you are building is for a SOHO chances are that it will include more than one router especially if you are following the frame work of the enterprise composite model. When a router lives in a network containing other routers they need a way to communicate with each other. This communication takes place using…
Calculating The Number Of Links For A Full Mesh Network
A full mesh network is one of the most reliable networks that you can have, but that reliability comes with a serious price. Full Mesh networks are incredibly expensive to build.
A full mesh network is so reliable because each node has its own link to every other node. If one of the links goes down…
Summarization
It seems that we talk an awful lot about subnetting but hardly anything about summarization, and so in this post that is exactly what we are going to talk about. The quick and easy way to explain what summarization is that it is the opposite of subnetting. When you are subnetting you are making the network smaller, but when you are summarizing…
Success by Showing Up
Eighty percent of success is showing up. ~Woody Allen
Obviously since you are here I assume you are working toward a Cisco certification of some sort or at least some other certification. If not, maybe you should be.
Even though we all have those strong desires to get our CCNA or similar certification, especially at the begining of the year. Often times life will get in our way and we will “think” that we are too busy to take the time to study.
Just like the above quote says about 80% of success is merely showing up. Chances are that 80% of your success in actually taking your certification exam is simply showing up every day to study.
How To Configure DNS Servers On Your Cisco Router
Another important topic that will show up on both the CCENT Exam and the CCNA Exam is DNS. This post will cover a basic DNS configuration on your Cisco Router.
Your router will need to connect to an external dns server either from your ISP or a public dns server so that you can have internet access. A DNS server will translate a domain name like facebook.com to an ip address like 69.63.189.16. These translations will be cached in your Cisco router. So that when another computer inside of your local network needs to translate facebook.com again it will not have to query the external server, but just use what is in the cache.