At the human level, some communication rules are formal and others are simply understood, or implicit, based on custom and practice. For devices to successfully communicate, a network protocol suite must describe precise requirements and interactions.
Networking protocol suites describe processes such as:
The format or structure of the message
The method by which networking devices share information about pathways with other networks How and when error and system messages are passed between devices The setup and termination of data transfer sessions
Individual protocols in a protocol suite may be vendor-specific and proprietary. Proprietary, in this context, means that one company or vendor controls the definition of the protocol and how it functions. Some proprietary protocols can be used by different organizations with permission from the owner. Others can only be implemented on equipment manufactured by the proprietary vendor.
his lab begins by having you construct two small networks. It then shows how they are connected to the larger hands-on lab network used throughout the course. This network is a simplified model of a section of the Internet and will be used to develop your practical networking skills.
The following sequence of labs will introduce the networking terms below. This networking terminology will be studied in detail in subsequent chapters.
Straight-through Cable: Unshielded twisted pair (UTP) copper cable for connecting dissimilar networking devices
Crossover Cable: UTP copper cable for connecting similar networking devices
Serial Cable: Copper cable typical of wide area connections
Ethernet: Dominant local area network technology
MAC Address: Ethernet Layer 2, physical address
IP Address: Layer 3 logical address
Subnet Mask: Required to interpret the IP address
Default Gateway: The IP address on a router interface to which a network sends traffic leaving the local network
NIC: Network Interface Card,...
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