Day- 3 Tcp Ip Model

8/2/2019 Day- 3 Tcp Ip Model

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The DOD Model is basically version of the OSI model . It is composed of four

Instead of seven layers

1- Process /Application Layer2- Host-to-host /Transport Layer

3- Internet Layer

4- Network Access Layer


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TCP/IP Protocol Suite

1- Process /Application--Telnet , FTP , LPD , SNMP , TFTP , SMTP , NFS , X-windows

2- Host-to-host TCP , UDP

3- Internet - ICMP , ARP , RARP , IP

4- Network Access Ethernet , Fastethernet , Token Ring , FDDI


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Telnet Telnet is chameleon of protocol it is terminal emulation .it allow a user

On a remote client machine , called the telnet client

File Transport Protocol (FTP)- FTP is the protocol that actually lets us transfer file

And it can accomplish this between any two machine using it .

Trivial File Transfer Protocol (TFTP)-tftp is the stripped-down , stock version of FTP,but it is the protocol of choice if you know exactly what you want and where to find it

Network File System (NFS)- NFS is a jewel of a protocol specializing in file sharing it

Allow different types of file system to interoperate

Simple Mail Transfer Protocol (SMTP)- SMTP answering our ubiquitous call to email,

Users a spooled , or queued method of mail delivery .


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Post office protocol (POP) POP gives us a storage facility for incoming

Mail , and the latest version is called POP3 (sound familiar)

Internet Message Access Protocol Version 4 (IMAP4)- IMAP makes it so

You get control over how you download your mail , and with it you also

Gain some much-needed security .

Transport Layer Security (TLS) & Secure Sockets Layer (SSL)-

TLS & SSL are cryptographic protocol that come in really handy for enabling

Secure online data-transfer activities like browsing the Web , internet faxing


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Line Printer Daemon (LPD) PLD protocol is design for printer sharing it allow

Print job to be stooped and sent to the networks printers using TCP/IP

X Window designed for client/server operation . Protocol for waiting writing

client/server application based on a GUI

Simple Network Management Protocol (SNMP)- SNMP collects and manipulate

Valuable network information it gather data by polling the devices on the network

From a management station at fixed or random intervals, requires them to disclose

Certain information

Secure Shell (SSH) - SSH protocol sets up a telnet session over a standard TCP/IP

Connection and is employed for doing things like logging into systems, running

Program on remote systems and moving files from one system to another .


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Hyper Text Transfer Protocol (HTTP)- it used to manage communication

between web browsers and web server and open the right resource

Hyper Text Transfer Protocol Secure - secure version of HTTP

Network Time Protocol(NTP)- NTP works by synchronization device to ensure

That all computers on a given network agree on the time

Network News Transfer Protocol (NNTP)- NNTP is how you access the Usenet

news servers that hold the legion of specific message boards called newsgroup


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Day- 3 Tcp Ip Model

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