Computer Networking Protocols and Standards
Network Cabling and Components Although the power and sophistication of networking protocols and software is
impressive, a network could not operate without physical cable and components. Even
a wireless network needs physical components such as access points. More ... Protocol Suites Network protocols define rules for handling data and communicating in a particular
networking environment. Individual protocols operate at specific layers in the OSI
reference model. A protocol suite is a group of protocols designed to work together. More ... The OSI Presentation Layer At this layer applications communicate on a format for exchanging data. The Session layer
provides character set conversion and formats the data. It performs encryption and
decryption, compression and decompression. More ... OSI Network Model The OSI model was developed years ago as a reference for network protocol and application
designers to build their products with an open standard. That would promote a standard
for developing network devices, interfaces, applications and services that would work
together. It is a model rather than a specification since it defines layers and services
for those layers and how each layer works with the layer above and below it. More ... IP Addressing and Subnetting Today, many different kinds of devices can communicate on a network. A network device
might be a computer, a router, a printer, or any number of unusual devices. Every device
on a network that uses the Internet protocol (IP) needs a unique IP address. More ... Network Operating Systems The purpose of a network is to permit users share resources located on other computers
and to share peripheral devices such as printers. A network operating system (NOS) is
specialized systems software designed to provide networking functionality. More ... Wireless Network Standards - 80211a, 80211b, 80211g, 80211n, 80216 This article describes the 80211a, 80211b, 80211g, 80211n, 80216, the current IEEE defined
wireless protocol standards in use today, their bandwidth, maximum data rate, and coverage area. More ... The OSI Application Layer This layer provides the interface between applications and the Network Operating System
(NOS). The Application layer provides network services and applications such as HTTP, FTP, TELNET and SMP. More ... Dynamic Host Configuration Protocol (DHCP) Explained In the early days of TCP/IP each device on a network had stored on its hard disk a
configuration file that an administrator used to manually assign a static IP address.
Today a network administrator is no longer required to maintain an IP and MAC address
configuration file a server. Every device on a network is automatically assigned a
unique IP address by Dynamic Host Configuration Protocol (DHCP). More ... Network Gateways When networks with different protocols, such as Ethernet and Token Ring need to be connected
together, this requires reconstruction of the data packets. To do this, information from above
the network layer is required. A gateway is a device that can function at all seven layers of the OSI model. More ... Ports and Sockets Data transmitted over the Internet carries a 32-bit IP address that identifies its
destination computer and a 16-bit number that identifies a port on that computer. The
combination of the IP address and the port number is called a "socket". A pair of
sockets, one on the sending computer and one on the receiving computer uniquely
identifies a specific connection on the Internet. More ...
|