and TCPIP英文翻译.doc

and TCPIP英文翻译原文:
The and TCP/IP
CIW EXAM OBJECTIVE AREAS COVERED IN THIS CHAPTER:
Define the infrastructure, including but not limited to: the National Science work (), the Society (ISOC), key working protocols.
Identify essential elements of the and locate Requests ments (RFCs) that define them, including but not limited to: the Open Systems Interconnection (OSI) reference model, the architecture model, Transmission Control Protocol/ Protocol (TCP/IP), various protocols.
Define the functions of application-layer protocols, including but not limited to: Hypertext Transfer Protocol (HTTP), File Transfer Protocol (FTP), Simple Mail Transfer Protocol (SMTP), work Management Protocol (SNMP).
The ess of many businesses, academic institutions, hospitals, and even governments can be chalked up works. Networks provide an efficient system of connections so that users can file-share, communicate, create, research, and learn together, even though the associated users are
miles or even continents apart.
Networks are extremely popular for a very basic reason: they allow users to share data quickly. In the past, users had to place files on a floppy disk or print them and physically deliver them to the destination. Such “” solutions may be appropriate or necessary in some situations, but when es anizing and expediting the daily operation of a business, no better means exists than a well-work.
Networks allow information to be distributed quickly and easily between two or puters. This is achieved with a system of protocols, cables, hardware, and (in some instances) other media, such as wireless technology.
work is two or puters that share information via a physical medium and a protocol. Networking can include a small work in one building, for instance, which is called a local work (LAN), and work can also connect many different LANs over a long distance in a wide work (WAN). A series of WANs can extend to a worldwide “work” that connects millions of users, such as the . Befor