NETWORK PROTOCOLS

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NETWORK PROTOCOLS:

NETWORK PROTOCOLS

PROTOCOL:

PROTOCOL STANDARD OR AGREED UPON WAY OF DOING SOMETHING PROTOCOL IS REFERENCING A SUITE OF PROTOCOLS THAT WORK TOGETHER The tasks that are associated in the OSI model are carried out by protocols E.g. conversion, encrytion , segmenting, addressing and framing

4 MAJOR PROTOCOLS:

4 MAJOR PROTOCOLS TCP/IP IPX/SCX NETBIOS/NETBEUI APPLETALK

TCP/IP transmission control protocol:

TCP/IP transmission control protocol Suite of protocols Developed by DOD in the late 1960s Cross platform “de facto” standard of the internet

TCP/IP MODEL:

TCP/IP MODEL

MAIN PROTOCOLS OF TCP/IP:

MAIN PROTOCOLS OF TCP/IP IP (Internet Protoco ) Functions at the internet layer of the TCP/IP Deals w/ providing information about how and where data should be delivered Connectionless protocol which means no guarantee of data delivery.

MAIN PROTOCOLS OF TCP/IP:

MAIN PROTOCOLS OF TCP/IP TCP (Transmission Control Protocol) Operates at the transport layer of the TCP/IP Connection oriented protocol Meaning , a connection must be established before the TCP will transmit any data

MAIN PROTOCOLS OF TCP/IP:

MAIN PROTOCOLS OF TCP/IP UDP (User Datagram Protocol) Connectionless protocols which means that it is not reliable and there’s no guarantee f data delivery Minimal overhead, meaning there is not much procedure in establishing connection Quick and efficient Ex. Audio and video streaming as well as broadcasts

MAIN PROTOCOLS OF TCP/IP:

MAIN PROTOCOLS OF TCP/IP FTP (file transfer protocol) Connection oriented protocol Send and receive files via TCP/IP Consists of client and server

MAIN PROTOCOLS OF TCP/IP:

MAIN PROTOCOLS OF TCP/IP SMTP (simple mail transfer protocol) Transfer mail services either over the internet or tcp / ip based networks Uses simple request and response method for transferring messages.

TCP/IP as far as network addressing :

TCP/IP as far as network addressing PORT - endpoint for a logical connection Allows application specifically when connecting to an IP Used in conjunction with IP address Ex. 192.168.100.10: 80 for http 192.168.100.10: 21 for ftp

TCP/IP as far as network addressing :

TCP/IP as far as network addressing 32 bit address divided into 4 octets Each octet is 8 bits The maximum range of values is 0-255 Ex. 192.168.100.24 Address is

TCP/IP The network ID:

TCP/IP The network ID , also known as a network address, identifies a single network segment within a larger TCP/IP internetwork (a network of networks). All the systems that attach and share access to the same network have a common network ID within their full IP address. This ID is also used to uniquely identify each network within the larger internetwork.

TCP/IP The Host ID:

TCP/IP The Host ID The host ID, also known as a host address, identifies a TCP/IP node (a workstation, server, router, or other TCP/IP device) within each network. The host ID for each device identifies a single system uniquely within its own network. Here is an example of a 32-bit IP address: 10000011 01101011 00010000 11001000

PowerPoint Presentation:

To make IP addressing easier, IP addresses are expressed in dotted decimal notation. The 32-bit IP address is segmented into four 8-bit octets. The octets are converted to decimal (base-10 numbering system) and separated by periods. Therefore, the previous IP address example is 131.107.16.200 when converted to dotted decimal notation.

PowerPoint Presentation:

HOST ID NETWORK ID 192.168.10.100

IPX/SCX:

IPX/SCX NCP (Network Core Protocol) Handles requests for services like file and print services Operates in the presentation and session layer Transaction component between client OS and netware servers

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