This chapter is an introduction to the application layer. In the next eight chapters we introduce common client-server applications used in the Internet. In this chapter, we give a general picture of how a client-server program is designed and give some simple codes of their implementation. The area of network programming is a very vast and complicated one; it cannot be covered in one chapter. We need to give a bird’s-eye view of this...

 20 p vimaru 29/04/2016 1671 4 Download

Upon completion you will be able to: Understand the connections needed for FTP file transfer be familiar with FTP commands and responses know the differences between FTP and TFTP be familiar with TFTP message types understand TFTP flow and error control.

 26 p vimaru 29/04/2016 1225 9 Download

The chapter has several objectives: To discuss SNMP as a framework for managing devices in an internet using the TCP/IP protocol suite; to define a manager as a host that runs SNMP client and any agents as a router or host that runs a server program; discuss SMI and MIB, which are used by SNMP; to show how SMI names objects, defines the type of data, and encodes data;...

 38 p vimaru 29/04/2016 1399 7 Download

In this chapter you will learn: Concept, network virtual terminal (NVT), NVT character set, embedding, options, option negotiation, suboption negotiation, controlling the server, out-of-band signaling.

 41 p vimaru 29/04/2016 1253 2 Download

Mobile communication has received a lot of attention in the last decade. The interest in mobile communication on the Internet means that the IP protocol, originally designed for stationary devices, must be enhanced to allow the use of mobile computers, computers that move from one network to another.

 26 p vimaru 29/04/2016 1562 8 Download

The chapter has several objectives: To discuss the architecture of WWW and describe the concepts of hypertext and hypermedia; to describe Web clients and Web servers and their components; to define URL as a tool to identify a Web server; to introduce three different Web documents: static document, dynamic document, and active document;...

 24 p vimaru 29/04/2016 668 5 Download

Transferring files from one computer to another is one of the most common tasks expected from a networking or internetworking environment. As a matter of fact, the greatest volume of data exchange in the Internet today is due to file transfer. In this chapter, we discuss two protocols involved in transferring files: File Transfer Protocol (FTP) and Trivial File Transfer Protocol (TFTP).

 23 p vimaru 29/04/2016 1582 19 Download

The main contents of this chapter include all of the following: User agent (UA), addresses, delayed delivery, aliases, mail transfer agent (MTA), commands and responses, mail transfer phases, mime, mail delivery, mail access protocols.

 35 p vimaru 29/04/2016 1197 16 Download

Real-time Transport Protocol (RTP) is the protocol designed to handle real-time traffic on the Internet. RTP does not have a delivery mechanism (multicasting, port numbers, and so on); it must be used with UDP. RTP stands between UDP and the application program. The main contributions of RTP are timestamping, sequencing, and mixing facilities. This chapter provides knowledge of RTP and RTCP.

 29 p vimaru 29/04/2016 1381 8 Download

Upon completion you will be able to: Review the features of an ATM WAN, understand how an a datagram can pass through an ATM WAN, understand how an IP packet is encapsulated in cells, understand how cells are routed in an ATM network, understand the function of ATMARP.

 28 p vimaru 29/04/2016 1603 14 Download

The Hypertext Transfer Protocol (HTTP) is a protocol used mainly to access data on the World Wide Web. HTTP functions like a combination of FTP and SMTP. This chapter provides knowledge of Hypertext Transfer Protocol (HTTP): HTTP transaction, request message, response message, header, examples, some other features.

 25 p vimaru 29/04/2016 1318 8 Download

Upon completion you will be able to: Understand the difference between an internet and an extranet, understand private, hybrid, and virtual private networks, understand how VPN can guarantee privacy, understand the mechanism of NAT.

 14 p vimaru 29/04/2016 1355 8 Download