Networking For Dummies, 11th Edition (For Dummies (Computer/Tech))

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The image below shows a typical network with four computers. You can see that all four computers are connected by a network cable to a central network device (in this case, a home router). This component, common in small networks, actually consists of three distinct but related network devices: Note a new technology that uses mains cable overcomes many of these disadvantages. powerline networking is common on home/small office networks This allowed networks to be aggregated, reducing the number of entries in the IP routing tables, whilst also allowing for greater efficiency in IP route processing. Variable Length Subnet Masking (VLSM) In the image below, you can see that two computers — Bart’s gaming computer and Homer’s old 1989 computer — are connected via cables to the switch component of the home router. You can also see that Lisa connects her laptop to the network wirelessly. Marge also connects her iPad to the network wirelessly.

The web (WWW) is a client server network at the logical level. Peer to Peer and Client Server Networking passive: Sets the interface to respond to LACP data if it receives negotiation requests from other systems. Routing Information Protocol (RIP) is widely used, with version 2 allowing you to use Variable Length Subnet Masks (VLSM) across your network. The following code will enable routing, enable RIP, set RIP to version 2, disable route summarization, defines the distributed network from this router as 192.168.5.0/24, and rather than broadcasting routes, it will send RIP data directly to 192.168.1.1. Router2> enable The home network diagram below shows the structure of a typical small home network using a wireless router and connected to the Internet. Internet: The Internet is a huge amalgamation of computer networks strewn about the entire planet. Networking the computers in your home or office so that they can share information with one another and connecting your computer to the worldwide Internet are two separate but related tasks.The most common type of wireless network system, centralized deployments are traditionally used in campuses where buildings and networks are in close proximity. This deployment consolidates the wireless network, which makes upgrades easier andfacilitates advanced wireless functionality. Controllers are based on-premises and are installed in a centralized location. IPv4 has been in use since the start of the Internet, and is deployed across the Internet, and home/corporate networks. The roll out of IPv6 across the Internet is happening slowly, and IPv4 will be with us for many years to come especially in home and small office networks.

Of course, computers can exchange information in ways other than networks. Most of us have used what computer nerds call the sneakernet. That’s where you copy a file to a flash drive or other portable storage device and then walk the data over to someone else’s computer. (The term sneakernet is typical of computer nerds’ feeble attempts at humor.) You can also see that Homer’s computer has a printer attached to it. Because of the network, Bart, Lisa, and Marge can also use this printer. If you want to configure either a router or switch to retrieve its IP configuration information from a network Dynamic Host Configuration Protocol (DHCP) server, then you can commands like the following example. Router1> enable

Configure a switch management interface for Cisco networking

The following code will enable the Cisco proprietary Rapid Per VLAN Spanning Tree Protocol (PVST) over the open standard of Multiple Spanning Tree Protocol (MSTP). In addition to configuring STP on the switch, you will also configure port 2 on the switch for portfast, which allows the port to immediately transition to forwarding mode. Switch1> enable A firewall protects your home or small business network computers and devices from intruders on the Internet.