Transport Layer

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Transport Layer Overview The transport layer of both the OSI and TCP/IP models is very important. At this layer the data being prepared to be sent over the internet is broken into pieces called segments. The PDU or protocol data unit at this layer is called a segment. Their are two main protocols that function at this […]
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Basic Network Configuration PT Activity

Overview This is a beginning network configuration activity in Packet Tracer 6.1. This activity is designed to challenge you with some basic Cisco IOS configurations using a Cisco 1941 router, two Cisco Catalyst 2960 switches, a TFTP server and two PCs. In this Packet Tracer activity you are asked to configure the following items: Step […]
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Data Link Layer

Overview The data link layer provides the upper layers access to the network media. It is responsible for controlling access to the media, encapsulating packets into appropriately sized frames for the media used, physical addressing, the exchange of frames between nodes on the local network, and error detection. Media Access Control Control Based Access – […]
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Communicating on a Network – Page 2

Cont. Network communication does not happen without rules or protocols. In this class we will learn about the many protocols or rules that are necessary to send a message across the local area network as well as the internet. In order to have successful communication between people you have to follow social and cultural conventions, […]
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Cisco IOS and CLI

Overview For the Cisco CCNA you are required to know how to configure Cisco routers and Cisco switches using the command line interface or CLI. A command line interface is a command driven user shell that allows the user to interface with the operating system. The command line interface or CLI is operated with just […]
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Active Directory Replication

Active Directory Replication This video looks at how Domain Controllers in Active Directory replicate data between each other. Domain Controllers can either replicate at the site level or between sites. A different approach is used for each because at the site level you want changes to happen quickly. Between sites replication may be reduced and […]
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Adding a child domian

Adding a child domian This video looks at how to add a child domain to an existing domain in Active Directory. Child domains can access resources from the parent and also from any other domain in the forest. This video will look at adding the east domain to the existing domain. Demonstration at 04:35 Things […]
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Domain Functional Levels

Domain Functional Levels Active Directory has functional levels at the domain and forest levels which determine which Active Directory features are available. The higher the functional level the more features available. This video looks at which domain functional levels are available and how to raise the domain functional level to get access to these features. […]
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External time source

External time source In any environment you need to ensure that the time and date on your computers is set correctly. If the time drifts too far from the correct time, this can cause problems logging in to the network and cause time sensitive authentication systems to fail. This video looks at keeping computers in […]
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