Know the different layers and their functions. Just knowing the order of the layers won’t suffice. You must have a good understanding of what function each layer provides, including its protocols and specifications. Study this information hard. Read the full story

Now that we have discussed the benefits of segmenting the LAN and using switches or bridges to do so, let’s look at a layer 3 solution using routers to segment the network into smaller LANs. Read the full story

Remember which commands display your DLCI number and LMI type.
The commands show frame-relay pvc and show running- config display your DCLI number. Read the full story

Know how to use the setup command and the information that needs to be entered into the router to complete the setup. Read the full story

Know the commands to view access lists.
You must remember the commands for viewing access lists set on both global configurations and interfaces.
Know the difference between IPX standard and extended access lists. Read the full story

Know what PPP is and what its features are

PPP is the most commonly used authentication protocol for dial-up Internet access. Its features include Read the full story