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CCNA 1 Instructor Materials
Introduction to Networks Instructor Materials – Chapter 11: It’s a Network
11.0 It’s a Network 11.0.1 Introduction 11.0.1.1 Introduction Up to this point in the course, we have considered the services that a data network can provide to the human network, examined the features of each layer of the OSI model and the operations of TCP/IP protocols, and looked in detail at Ethernet, a universal LAN technology. The next step is…
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CCNA 1 Instructor Materials
Introduction to Networks Instructor Materials – Chapter 10: Application Layer
10.0 Application Layer 10.0.1 Introduction 10.0.1.1 Introduction We experience the Internet through the World Wide Web when streaming videos, playing online games, chatting with and emailing friends, and shopping for deals on web sites. Applications, such as the ones used to provide the services mentioned, provide the human interface to the underlying network. They enable us to send and receive…
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Introduction to Networks Instructor Materials – Chapter 9: Subnetting IP Networks
9.0 Subnetting IP Networks 9.0.1 Introduction 9.0.1.1 Introduction Designing, implementing and managing an effective IP addressing plan ensures that networks can operate effectively and efficiently. This is especially true as the number of host connections to a network increases. Understanding the hierarchical structure of the IP address and how to modify that hierarchy in order to more efficiently meet routing…
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Introduction to Networks Instructor Materials – Chapter 8: IP Addressing
8.0 IP Addressing 8.0.1 Introduction 8.0.1.1 Introduction Addressing is a key function of network layer protocols that enables data communication between hosts, regardless of whether the hosts are on the same network or on different networks. Both Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6) provide hierarchical addressing for packets that carry data. Designing, implementing and managing…
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Introduction to Networks Instructor Materials – Chapter 7: Transport Layer
7.0 Transportation Layer 7.0.1 Introduction 7.0.1.1 Introduction Data networks and the Internet support the human network by supplying reliable communication between people. On a single device, people can use multiple applications and services such as email, the web, and instant messaging to send messages or retrieve information. Applications such as email clients, web browsers, and instant messaging clients allow people…
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CCNA 1 Instructor Materials
Introduction to Networks Instructor Materials – Chapter 6: Network Layer
6.0 Network Layer 6.0.1 Introduction 6.0.1.1 Introduction Network applications and services on one end device can communicate with applications and services running on another end device. How is this data communicated across the network in an efficient way? The protocols of the OSI model network layer specify addressing and processes that enable transport layer data to be packaged and transported.…
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CCNA 1 Instructor Materials
Introduction to Networks Instructor Materials – Chapter 5: Ethernet
5.0 Ethernet 5.0.1 Introduction 5.0.1.1 Introduction The OSI physical layer provides the means to transport the bits that make up a data link layer frame across the network media. Ethernet is now the predominant LAN technology in the world. Ethernet operates in the data link layer and the physical layer. The Ethernet protocol standards define many aspects of network communication…
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CCNA 1 Instructor Materials
Introduction to Networks Instructor Materials – Chapter 4: Network Access
4.0 Network Access 4.0.1 Introduction 4.0.1.1 Introduction To support our communication, the OSI model divides the functions of a data network into layers. Each layer works with the layers above and below in order to transmit data. Two layers within the OSI model are so closely tied, that according to the TCP/IP model, they are in essence one layer. Those…
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Introduction to Networks Instructor Materials – Chapter 3: Network Protocols and Communications
3.0 Network Protocols and Communications 3.0.1 Introduction 3.0.1.1 Introduction More and more, it is networks that connect us. People communicate online from everywhere. Conversations in classrooms spill into instant message chat sessions, and online debates continue at school. New services are being developed daily to take advantage of the network. Rather than developing unique and separate systems for the delivery…
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Introduction to Networks Instructor Materials – Chapter 2: Configuring a Network Operating System
2.0 Configuring a Network Operating System 2.0.1 Introduction 2.0.1.1 Introduction to Cisco IOS Home networks typically interconnect a wide variety of end devices including PCs, laptops, tablets, smartphones, smart TVs, Digital Living Network Alliance (DLNA) compliant network media players, such as the Xbox 360 or PlayStation 3, and more. All of these end devices are usually connected to a home…