Cisco CCNA Certification Tutorial: Segmenting your network

When you begin your study CCNA on your way to earn this certification, you will be by the types of network devices that you are familiar overwhelmed, but not quite sure how to use. Check out these network devices and their main targets.

Hubs and repeaters operate with a first layer of the OSI model, and they have one main purpose – regenerating the electrical signal to a first layer, making technologies. This regeneration avoids damping, the progressive weakening of the signal. Like a radio signal, the electrical signals that travel on a first layer slow down gradually, as they can travel through the wire. Hubs and repeaters to both generate a “clean” copy of the signal.

Although hubs and repeaters can be useful, do nothing, as far as network segmentation is concerned. The first of its kind that we, as we move is the OSI model Encounters of the switch. On the operating level 2, a switch creates multiple collision domains by default for each switch port as its own collision domain is briefly considered. If 12 PCs are connected to a Cisco switch, you have 12 separate collision domains.

The switches can be used segment the network into smaller broadcast domains, but this is not standard behavior. Virtual LAN (VLAN) segments of the network configuration in smaller broadcast domains, since a broadcast is sent from a host in a VLAN understood that other devices in the same VLAN.

Routers operate at Layer 3 of the OSI model and a network segment into multiple broadcast domains by default. Routers forward broadcasts no switches just do what the router is the only device of four we have discussed today to create multiple broadcast domains by default.

Know what each of these devices can and can not, is vital to the success of CCNA and to a large network administrator. Good luck to you in those two goals!