Ccna 200-355

[Kena Sugrue]

Foranyone who manages Cisco training for their office or workcenter, this wireless training can be used for 200-355 WIFUND exam prep, on-boarding new network administrators, or as part of a team training plan.

This Wireless training is considered associate-level Cisco training, which means it was designed for network administrators. This 200-355 WIFUND course is valuable for new IT professionals with at least a year of experience with WLANs and experienced network administrators looking to validate their Cisco skills.

More than 21 hours of video training covering all of the objectives in the CCNA Wireless WIFUND 200-355 exam. Includes 240 interactive practice quizzes, 12 glossary quizzes, and 24 dynamic hands-on exercises and multi-step simulations so you can practice what you learn and assess your skills.

Wi-Fi uses RF signals. As soon as these signals leave your antenna, they get affected by the environment. This lesson looks at RF propagation, how a wave moves from one place to another. To understand waves, we will first look at how a wave is described and its characteristics. We will then look at what happen to that wave as it moves. You will be able to use this information not only for Wi-Fi designs, but also to understand the characteristics of any radio transmissions, from cellular to radio or TV.

After you understand the basics of RF propagation, you soon realize that the energy the wireless clients receive is very faint. This lesson will help you understand how the received energy is measured, and how it is compared to the environmental noise. This will help you evaluate the possibilities of various Wi-Fi client types, from laptops to phones or tables. With this information in hand, you will be able to better build a wireless cell that provides an optimal signal for all the clients you intend to include.

Most access points come from a default antenna, that translate in a cell of a particular shape and size. But changing the antenna allows you to modify that shape, to provide coverage in specific areas, while isolating your system from neighboring signals. Choosing the right antenna implies understanding antenna types and characteristics. This lesson will help you master the radiation patterns used by antenna vendors to describe their antennas. This lesson will also help you choose the right antenna for the right type of coverage, while making sure that you respect the rules of maximum radiated signal strength.

ITU, IEEE, WI-FI Alliance, FCC, ETSI...many organizations have roles that influence what your access points and wireless clients can send and receive. This lesson will help you navigate the role of these organizations. At the end of this lesson, you will have a clear understanding of what frequencies and powers are allowed for Wi-Fi, who decided of these rules, and how these different organizations interconnect to determine what your Wi-Fi network can and cannot do.

Now that you understand radio waves, it is time to give a closer look at Wi-Fi-specific transmissions. There are multiple ways of transmitting 0s and 1s in a radio wave. In this module, you will learn the choices that the 802.11 designers have made for such transmissions. You will learn how Wi-Fi transmits data, but also all the accompanying frames and mechanisms behind these transmissions. This module will help you understand why Wi-Fi works, why (sometimes) it does not work, and the reasons behind Wi-Fi transmission possibilities and limitations.

Access points and stations can send frames whenever they need, but Wi-Fi has some rules in place to avoid, as best as possible, frame collisions in the air. In this lesson, you will learn the access methods behind Wi-Fi transmissions, and the various frames in place to avoid smooth communications. You will also learn the challenges of implementing decentralized access methods, and why this implementation choice not only made the success of Wi-Fi, but also created fundamental incompatibilities with other technologies, for example with LTE.

In the 15 years of Wi-Fi development, one primary effort was to increase transmission speeds. This is how amendments like 802.11b, 802.11g, 802.11a, 802.11n, 802.11ac or 802.11ax were developed. In this lesson, you will learn what these amendments bring to Wi-Fi communication, but also what issues and limitations new protocols bring to the older ones. You will also learn other enhancement techniques, such as MIMO, MU-MIMO, MRC, spatial streams and beamforming.

Site surveys are at the heart of Wi-Fi deployments. As a CCNA, you may not be expected to plan and design for large deployments without support, but you are definitely expected to understand what site surveys are and how (if) they are done. This module will give you the tools you need to be proficient with site surveys, covering the various techniques at your disposal, the various requirements for standard deployment types, and also browsing to the site survey tools available for offsite and onsite surveys.

Each survey type typically follows a standard process, built over years of shared experience and best practices from thousands of professionals worldwide. But a survey is nothing if you do not have clear performance objectives for your Wi-Fi coverage. This lesson will help you determine the type of cell you want to build, if you are designing for simple data traffic, or for voice, high bandwidth real time applications, high user density, or even location-based services.

Do you actually need to perform a site survey? And if so, what kind of site survey would you perform? It all depends on the phase of the deployment you are addressing. In this lesson, you will learn about the various phases in Wi-Fi deployment, and you will learn, for each phase, what type of survey can be performed and to achieve what purpose. This will help you determine if your network requires a site survey, or if it was properly designed.

Once you understand the site survey techniques and cell performance requirements, you need to choose one or several site survey tools. This lesson will give you an overview of the various tools available for each type of survey. Each tool is typically built for a specific purpose, giving it strengths and also limitations. This lesson will help you choose the best tool(s), to provide the information you need for each phase of your deployment.

Security is achieved by applying a combination of factors that work together, from authentication to encryption, but also attack detection and prevention. Not all factors are needed for all networks. This lesson will guide you through the different elements of Wi-Fi security to help you chose the bricks you need to make your network secure, without gaps and also without any security excesses that create burden for your users or the wireless administrator, without adding a security layer that would be useful for the network you deployed.

Authentication is the first phase you need to implement Wi-Fi security. However, it is quite a complex one, because there are many different possible techniques, each providing a different quality of security. To make things worse, not all clients and not all infrastructure support the same authentication techniques. This lesson will help you sort the various techniques, to understand how they work, what security confidence they can bring, and what support you can expect from the various types of clients and Cisco network deployments.

Wi-Fi signals can travel far beyond the limits of your walls, and be captured by unwanted listeners. Therefore, a key to wireless security is to encrypt traffic. But just as computing technologies have evolved a lot over the last 15 years, Wi-Fi encryption technologies have also changed dramatically. This lesson will guide you through the modern encryption techniques that you need to implement, will help you recognize the obsolete technologies that should be avoided, and will also give you glimpse on what future technologies may bring to your network security.

It is now time to dive into Cisco wireless networks. Each network is a unique combination of needs, constraints and possibilities, and there are several wireless network types. As a CCNA Wireless, you are expected to be able to manage these networks, and also understand what deployment choice was made, and the reasons behind this choice. This module will help you navigate through the various components of wireless networks, and will also help you understand the various wireless architectures available today. You will also learn the common components of these architectures, in terms of management, security or protocols. You will also learn how to determine key elements of your deployment and configuration, such as channel plan, power or QoS management.

There are all sorts of ways to build a wireless network, depending on the physical environment, the business requirements, the client types, the expected performances, but also the management needs. For these reasons, Cisco distinguishes 5 deployment types that you need to master. This lesson will guide you through these different types, and will also help you understand how these networks are managed and secured.

Your wireless access points need to connect to switches. You may also implement Wireless LAN controllers to control these access points, creating an overlay to the wired infrastructure. You need to understand how the wireless infrastructure interacts with the wired infrastructure. This lesson will help you understand the various elements of the wireless infrastructure, from split MAC, control and data traffic, to Mobility Controller and Mobility Agent, and will also help you understand how switches and routers should be configured to interact with your wireless infrastructure.

Security is key to wireless deployments, and this lesson will detail two security protocols that you need for your wireless networks management: TACACS and RADIUS. You will also learn the basics of Cisco Identity Services (ISE), the tool of choice to manage the secure access of your wireless users and devices.

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