Course Introduction Networking Fundamental. Includes material from Cisco Networking Academy CCNA Semester 1. Course Information. Concepts, Terminology, OSI Model, IP Addressing, Subnetting, Ethernet, LANs, Protocols, Packets, Frames, Data Communications
Includes material from Cisco Networking Academy CCNA Semester 1
Some of the fundamental networking topics covered:
This will not be the last time you learn about these topics in your networking education and career.
Q&A: "Please help me with these CCIE questions..."
Scott, Please help me with the following CCIE questions:
1. Define connectivity and inter-operability.
2. What is the purpose of the interframe gap?
3. What is the purpose of the Ethernet type field?
4. Why are terminators needed on Ethernet segments?
5. The first three bytes of the Ethernet packet destination and source address provide you with what type of management information?
6. How is a jamming signal used?
7. Define the function of a repeater.
8. What is the length and structure of the Version II frame preamble?
9. What is the length and structure of the 802.3 frame preamble?
10. What does a preamble look like when seen in the hexadecimal data captured in a frame corrupted by a collision?
Thanks. -- Ted Ted,
Well, I have to say that you have definitely included the most varied questions in one posting that I've seen yet! Now, with that in mind, I'm going to take a different approach with the answer. Each of these questions is vague and can command an answer between one and 15 typed pages at a time. Nobody gives me the space to do that kind of answer!
Each concept is both simple and difficult. Some more specific questions are easily answered. I would strongly suggest either taking a general networking course or checking out some good reference books. Examples include: Stevens' TCP/IP Illustrated, Volume 1; Giles' Cisco CCIE: All-In-One Study Guide; and Halabi's Internet Routing Architectures (Second Edition). You can also search various Web sites including http://www.cisco.com; http://www.itprc.com; and http://www.google.com. Each will give you many results for these topics.
Part of being a networking professional goes far beyond the rote memorization of concepts such as interframe gap, which may be required by different media types to allow for processing of frames while still sending an idle code to maintain clocking between the devices. Or that repeaters do just that -- repeat everything they hear. So, rather than asking question after question like you've done, spend some time reading and researching those topics. If you have more specific questions later, that has demonstrated the attempt at understanding the basic technologies, which admittedly can be very confusing. Then feel free to ask away!
We all are part of a community designed to help each other succeed in many ways, but that effort for success begins with a personal drive and effort towards learning. I hope this helps motivate you along that path! And if it doesn't discourage you too much, always remember that the more you know, the more you know you don't know!
-- Scott CCIE Scott Morris, independent uber-geek, does Cisco training and technology consulting around the world. He's also a speaker at many industry events. Learn more about him at http://smorris.uber-geek.net.