By Scott Bennett
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As converged networks and mobility are used progressively more in day-by-day company, those applied sciences must be optimized to help enterprise necessities. you'll leam concerning the new Cisco clever info community (IIN) version and the Cisco Service-Oriented community structure (SONA) as architectural frameworks for converged networks.
Regardless of the positive factors that make Voice over IP so appealing from the perspective of price and adaptability of phone providers, companies will in simple terms undertake it as soon as they have decided even if, and lower than what situations, the standard of VoIP should be passable to clients. In those pages you will find every thing you want to be aware of to respond to these questions, either now and sooner or later as different packet-switched voice companies emerge.
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Extra resources for 31 Days Before Your CCENT Certification (Cisco Networking Academy Program)
5: As shown in Figure 28-1, a peer-to-peer network can be as simple as two directly connected hosts, or as complicated as multiple hosts connected through various network devices. The key characteristics of a peer-to-peer network are as follows: ■ It is decentralized. ■ It has no dedicated servers. ■ All clients can also provide services such as file and print sharing. 6: When you install a network, you likely start with a detailed map of where the wires and I have a printer to share. Print Sharing I have files to share.
The NOC controls traffic flow and can provide e-mail, web, or other services, depending on the servers at the facility. ISP devices often perform the same functions as a server and router at a small business; however, an ISP provides these services on a larger scale, with more users and more traffic. ISPs use enterprise-level, high-end equipment, whereas a small business or home office could use smaller, less powerful devices. 1: The following list defines the connection options for a small office or home user to the Internet: ■ Dialup access provides a slower connection through a phone line and a modem.
At the transport layer, Transmission Control Protocol (TCP) defines how communicating hosts can control the flow of information and acknowledge information received. ■ At the network layer, the Internet Protocol (IP) defines how packets should be addressed and routed to their destination. ■ At the data link layer, Ethernet is the most common protocol. IP packets are encapsulated into frames and given a physical address for transmission over the network. ■ Network interface cards (NIC) use various physical layer standards (depending on the media type) to determine how bits are represented and sent over the medium.