Compare The Layers Of The Osi And Tcp - Ip Models:

Front 1

Offer a secure authentication of clients to web servers before delivery of requested data.

Back 1

HTTPS (HyperText Transport Protocol Secure) The protocol used to access a secure Web server. When https:// is used as the prefix of a Web address rather than the common http://, the session is managed by a security protocol, which is typically SSL, and the transmission is encrypted to and from the Web server.

Front 2

Often used in audio/video delivery of real-time data requiring QoS and tight sequencing.

Back 2

RTP The Real-time Transport Protocol (RTP) is a network protocol for delivering audio and video over IP networks. RTP is used extensively in communication and entertainment systems that involve streaming media, such as telephony, video teleconference applications, television services and web-based push-to-talk features.

Front 3

Resolves fully qualified domain names to their unique IP addresses.

Back 3

DNS. (Domain Name System) The Internet's system for converting alphabetic names into numeric IP addresses. For example, when a Web address (URL) is typed into a browser, DNS servers return the IP address of the Web server associated with that name.

Front 4

The email is stored on the server and can be accessed from multiple locations.

Back 4

IMAP In computing, the Internet Message Access Protocol (IMAP) is an Internet standard protocol used by e-mail clients to retrieve email messages from a mail server over a TCP/IP connection. IMAP is defined by RFC 3501. ... IMAP over SSL (IMAPS) is assigned the port number 993.

Front 5

Network layer protocol that makes multicast connections for purposes of delivering mass datagrams simultaneously to groups of clients.

Back 5

IGMP he Internet Group Management Protocol (IGMP) is a communications protocol used by hosts and adjacent routers on IPv4 networks to establish multicast group memberships. IGMP is an integral part of IP multicast.