By René Molenaar
Find out how to grasp CCNA covers every thing you must recognize in an effort to cross Cisco's CCNA Routing & Switching examination. you are going to know about the fundamentals of networking just like the OSI version, the variation among IPv4, IPv6, TCP, UDP and extra. additionally, you will find out how to configure protocols like spanning-tree, VLANs and trunking in your switches and the way routers use routing protocols to construct their routing desk. This booklet covers every little thing for the ICND1 (100-101), ICND2 (200-101) and CCNA mixed examination (200-120).
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184 is responding by sending a TCP SYN,ACK in return. 2 sends a TCP ACK to finish the 3 way handshake. com #2557060 Page 43 of 466 How to Master CCNA Let‟s see those packets in detail, first we look at the TCP SYN: You can see in the “Flags” section that the SYN-bit has been set. On the top right you can see “Seq: 0” which is the sequence number. In this example you see that in the “Flags” section both the SYN and ACK bit are set, also on the top you can see “Seq :0” and “Ack:1”. This computer is acknowledging the SYN-bit from the other computer.
Welcome to the marvelous world of typing commands to get things done. Let‟s start with a simple example. We‟ll configure the clock on our switch so I can demonstrate how the CLI works: Switch#cl? clear clock Whenever I partially type a command I can use the ? to see my options. ” and the CLI tells me that there are two commands that start with the letters “cl”. There‟s the “clear” command and the “clock” command. Let‟s try the clock: Switch#clock % Incomplete command. When you see % incomplete command the CLI is expecting more information.
One of the other things that our MAC sublayer does is taking care of channel access. This makes it possible so computers connected to the same physical medium can access and share it. What do I mean by “same physical medium”? We have to take a little history lesson here. com #2557060 Page 48 of 466 How to Master CCNA Do you remember those network cables? If you don‟t…good for you! I have to be honest I never worked with these networks on a “professional” level but I did use them for home networks at the time (of course to play games over the LAN…not to build websites about networking like I do nowadays…).
How to Master CCNA by René Molenaar