As the name implies, the CCNA Routing and Switching Complete Study Guide: Exam 100-105, Exam 200-105, Exam 200-125 indicates, this course covers all five fundamentals of routing and switching: networks, devices and protocols, networks with static and dynamic routes, Racetrack routing schemes, and redistribution.
All five fundamentals are covered in this course. However, only network fundamentals are covered in detail as part of the study guide. All other components of routing and switching are reviewed in more detail in the exam.
This course is a great place to start your networking journey as it gives you all the basics to pass the CCNA exam.
What is switching?
Switching is the process of replacing one connection to another. For example, you make a new phone call, your new phone connects via a data plan.
In comparison, when you moved from cell phone to smartphone, you were moving from one provider to another. This is how it works with the internet as well. You may have your computer and/or mobile device provided by different providers, however.
When you move from one provider to another, your service provider needs to provide the transition procedures and all of the necessary apps and features. This is why it is important to know what switching involves.
It can be stressful or confusing, depending on whether you are doing it for the first time or not. Either way, this article will cover all of the most common ways to switch services.
What is the differnce between routing and switching?
Both terms describe the process of connecting networks to each other and to servers and applications. Networks that use switching versus routing, connect many different servers and applications together, making it more difficult to determine the difference between the two terms.
Server-client applications have become more prevalent as they connect to the cloud or engage with a third-party application. This makes it difficult to determine which term is used in networking, routing or switching.
Network administrators often use one term over another because of an application or platform they use. For example,routers typically do not offer any sort of management tools, whereas switches do.
What is a protocol?
A protocol is a set of rules that define how information is transmitted between systems.
For example, the Transmission Control Protocol (TCP) defines how data is transferred between computers using a series of instructions.
Similarly, the UDP (user datagram protocol) defines how data is transferred between computers using a series of instructions, but doesn’t define how many or which kinds of data can be sent in one message.
The TCP/IP network architecture does define which types of data can be sent in one TCP/IP instruction, so some applications use TCP/IP instead of UDP for transfers.
The purpose of protocols is to define rules that govern communication between systems.
How do routers communicate with each other?
When a router connects to a network, it typically needs to know the address of the router that connected to it.
This information is called network configuration data (or condata) and is stored in the routers through its installation process.
Through its networking configuration data, each router on the network knows its external IP address and how to connect to other networks.
Common ways for a router to communicate with other routers and networks is through subnets, bridge connectivity, and access points.
Subnets allow for different routers to share the same public IP address, while bridges provide connectivity between two or more networks. Connectivity between two networks using a bridge is referred to as crossover cable connection.
How do switches communicate with each other?
When a network switch receives a transmission from another switch, it passes the information on to the next switch in the hierarchy. This communication is referred to as mesh networking.
Mesh networks can be useful when there are multiple switches in a network that need to communicate with one another. By using mesh networking, all of the switches can share bandwidth without worrying about overheads or shared storage.
Network switches come in different sizes and are labeled with an icon on them. The largest type of switch can be over six inches tall! Most people find them intimidating, but it is important to know how they work so you can protect yourself against mistakes.
Anyone can study any level of exam 100-105, 200-105, or 200-125 without taking a class! However, you will not take advantage of the test if you do not have an understanding of the material from previous exams.
What is an internetwork?
An internetwork is a network of computers connected by high-speed internet access. You can think of them as your home or personal computer network.
You can connect to it via a cable, DSL, or even a wireless connection. You can also create private networks within the workplace or between offices.
The term networking is used often when talking about IT jobs, since it can be used to describe all types of jobs related to technology.
Routines and protocols that exist on each computer and what information is exchanged when working together in an internetwork. These include email, remote desktop, file sharing, and messaging applications.
What is an extended network?
An extended network is a more complex network layout that uses more devices and routes. This can be useful if you do not have enough space in your house to install all of these new devices!
Many networks, such as the Internet, require a backbone device to function. These backbones route traffic for you, giving you an instant network connection!
If you take the time to learn enough networking, you can become an extended network expert. This means having knowledge of basic protocols and structure of networks, but also more advanced features like security requirements, deployment scenarios, and required tools.
What are the different types of routers and switches?
There are many types of networking devices, such as routers and switches. You can purchase them online or in a store, making it easy to learn more about them.
Routers connect devices through cable or wireless. Routers do not control devices directly, but they do determine what devices can connect to the network and who can connect to it.
Switches connect devices together, such as connecting a device to the internet via cable or a wireless router. Switches do control which devices are connected to the network, but not necessarily when they want to join it.
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