Open Systems Interconnect (OSI) Model

A physical model that contains seven layers and provides different vendors to communicate on the network.

Its a conceptual model that characterizes and standardizes the internal functions of the a communication system by partitioning it into abstraction layers.

Provides the functional and procedural means to transfer data between network entities and to detect and possibly correct errors that may occur in the physical layer.

Provides the functional and procedural means of transferring variables length data sequences from a source host on one network to a destination host on a different network.

Defines the electrical and physical specifications for devices.

Provides the functional and procedural means of transferring variables length data sequences from a source host on one network to a destination host on a different network. It routes packets through logical addressing.

Defines the electrical and physical specifications for devices.

Defines how data is formatted for transmission and how access to the network is controlled. Provides error detection but no flow control using sliding window.

It segments and reassembles data in to a data stream. Services in this layer segment and reassembles data from upper layer applications.

Provides the physical transmission of data and handles error notification, network topology, and flow control.

Manages device addressing, tracks the locations of devices in the network and determines the best way to move data through logical addressing.

Manages device addressing, tracks the locations of devices in the network and determines the best way to move data through logical addressing.

Provides the physical transmission of data and handles error notification, network topology, and flow control.

It segments and reassembles data in to a data stream. Services in this layer segment and reassembles data from upper layer applications.

Provides the physical transmission of data and handles error notification, network topology, and flow control.

Defines the electrical and physical specifications for devices.

Defined as a translator and provides coding and conversion functions. Presents data to the Application layer and is responsible for data translation and code formatting.

Manages device addressing, tracks the locations of devices in the network and determines the best way to move data through logical addressing.

Its responsible for setting up, managing and tearing down sessions between Presentation Layer entities.

It segments and reassembles data in to a data stream. Services in this layer segment and reassembles data from upper layer applications.

IPv4 and IPv6 used in logical addressing

Hubs and Repeaters. Also transmission media such as copper and fiber.

Hardware addressing, flow control and error notification.

Physical addressing, Network topology, Flow control and Error notification.

TCP and UDP

IPv4 and IPv6

FIle, print, messages, database and application services

Hubs and Repeaters

IPv4 and IPv6

TCP and UDP

Routing using IPv4 and IPv6

Dialog control and sessions.

Establishes sessions and tearing down virtual circuit.

Data encryption, compression, and translation services.

UDP and TCP.

Data encryption, compression, and translation services.

Physical topology

Keeps applications data separate from other applications data.

File, print, message and database.

dialog control, simplex mode, half duplex mode, and full duplex mode.

TCP and UDP

Physical Topologies

Telnet, HTTP, Email, SSH, DNS, FTP, SMTP and LDAP, and SNMP.

DHCP

1) fast 2) network

1) physical 2) error

1) access control 2) error

It is a sublayer of the Data Link layer that is responsible for physical addressing. It defines how packets are placed on the media. Its called media access since it acts as a first come first service access.

It is a sublayer of the Data Link layer that is responsible for identifying network layer protocols and encapsulating them. Its header tells the data link layer what to do with the packet once a frame is received.

It is a sublayer of the Data Link layer that is responsible for identifying network layer protocols and encapsulating them. Its header tells the data link layer what to do with the packet once a frame is received.

It is a sublayer of the Data Link layer that is responsible for physical addressing. It defines how packets are placed on the media. Its called media access since it acts as a first come first service access.

48 bit hexadecimal address

64 bit hexadecimal address

128 bit hexadecimal address

The first 24 bits is the unique serial number and the second 24 bits represent the OUI

The first 24 bits is the customer number and the second 24 bits represent the unique serial number

The first 24 bits is the vendor (Organizational Unique Identifier) and the second 24 bits represent the unique serial number.

Its a topology that allows network access for data transmission in the network

It is a contention media access method that allows all users on the network to share the same bandwidth.

It communicates with the LAN as a one to many hosts.

It communicates with the LAN as a one to one host.

it communicates with the LAN as a one to certain hosts

It communicates with the LAN as a one to nearest host

It communicates with the LAN as a one to many hosts.

It communicates with the LAN as a one to one host.

it communicates with the LAN as a one to certain hosts

It communicates with the LAN as a one to nearest host

It communicates with the LAN as a one to many hosts.

It communicates with the LAN as a one to one host.

it communicates with the LAN as a one to certain hosts

It communicates with the LAN as a one to nearest host

It communicates with the LAN as a one to one host.

It communicates with the LAN as a one to many hosts.

It communicates with the LAN as a one to nearest host

it communicates with the LAN as a one to certain hosts

Its used for the physical layer as an enhanced Ethernet transmission access method.

Its used for implementing wireless local area network (WLAN).