Welcome to the world of LANS, in the previous couple of chapters, we learnt about routers and how they are used in the networking environments. In the next couple of chapters, we will learn about LANs and the main device we will use will be the SWITCH. The concepts we will learn will also tie […]
Overview In our previous chapters, we have looked at the OSI and TCP/IP models in detail and explained how they aid in communication. All these concepts lead up to this chapter and beyond. In this chapter, we will learn how to plan our networks and look at the various cabling options to use in our […]
Overview In the previous chapters, we learnt about the application layer and transport layer port communication, we also looked at the network layer and IPv4 addressing for remote delivery of packets. In this chapter we look at the data link layer and discuss how it prepares packets for transport over different types of media and […]
Welcome to part 2 of addressing in ipv4. In part 1 we looked at how IP addresses are assigned in ipv4. We looked at the various types of ipv4 addresses and we also did basic subnetting. In part 2, we will continue subnetting and introduce a few more concepts. Classful addressing in ipv4 When IPv4 […]
Overview In the previous chapter, we looked at the role of the OSI transport layer in communication. In this chapter, we will look at the network layer. We will discuss the addressing used, the functions, and the different network layer protocols, introduce IPv4, understand how packets move in the network and finally give an overview […]
Overview In the previous chapter, we looked at the application layer and saw that it is the interface between the human network and the data network. In this chapter, we will look at the transport layer and discuss how it aids in communication. At the end of this chapter, you should be able to describe […]
Overview As I am sure, most of you use the internet in a number of ways; be it browsing the web, downloading movies, financial transactions, blogging, IM messaging among others. We are most likely oblivious of what it is that makes this communication possible. In this chapter, we will look at the first layer of […]
Overview In the previous chapter we were introduced to computer networks and we got to know their importance in everyday lives. In this chapter, we will look at the layered models that are used in communication over networks. We will discuss the TCP/ip model and the OSI model to better understand how communication works. This […]