Some common types of internet appliances include a

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Some common types of Internet appliances include a web proxy appliance, which provides web proxy services. A content filter which plugs into a network can be configured to block specific types of content such as inappropriate websites, and the malware scanner, which is able to scan incoming emails for malicious applications or files. These are just a few, there are a lot of different types of Internet appliances. And know that all the services that these Internet appliances provide can also be implemented on a physical server system, and doing so is much cheaper than buying an Internet appliance. However, dedicated Internet appliances perform much faster, are easier to use, and are typically a lot more effective at their specific role than a server providing the same service. Network Attached Storage (NAS) 6:15-6:56
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The last network device we're going to talk about is similar to a file server, but is much more efficient.Network-attached storage, or NAS devices are a dedicated file server device. Their only job is to provide storage and share network files, that's it. Because their role is so specific, NAS devices are much easier to configure, set up, and manage than a traditional file server. Basically all you have to do is plug a NAS into your network, make minimal configurations and then NAS is up and running and ready to serve files in the server extremely fast. Even though some NAS devices are extremely expensive, they are much more efficient and provide more functionality than a traditional file server. Summary 6:57-7:31 These are just some of the network devices you'll encounter as a PC technician, and we didn't really go into much detail on any particular topic in this lesson. Our goal wasn't to make you an expert network administrator. We merely wanted to provide you with the information you need to recognizethe various components that exists on a network. To review, in this lesson, we first talked about the different types of servers on a network. We then talked about the VoIP service and the VoIP phones. After that we talked about the different types of Internet appliances and the services they provide. We finished talking about NAS devices. The following hardware devices are used to create a network's physical infrastructure: Component Description Media The networking medium provides the path for signals to pass between devices. Copper cables use electrical signals. Fiber optic cables use light pulses. Wireless networks use radio waves or infrared waves. Networking media that use cables are considered bounded, because the transmission signals are contained within the wire. Networks that use wireless communications are considered unbounded. Network adapter A network adapter is responsible for creating and receiving transmission signals that are sent along the networking medium.
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