OSI Model and TCP Flashcards
Networking models
categorize and provide a structure for networking protocols and standards
are a set of rules defining how network devices and software should work.
Protocols
OSI stands for
Open Systems Interconnection Model
refer to logical rules about how the devices should communicate, not physical standards
Protocols
the OSI Model was created by
ISO (International Organization for Standardization)
- Layer closest to the end user.
- Identifying communication partners
Application Layer
its job is to translate between applications and network formats.
Presentation Layer
Establishes, manages, and terminates connections between the local application and the remote application
Session
The OSI Upper Layers consists of, network engineers do not usually work with these layers.
Application, Presentation and Session Layer
Segments and reassembles data for communications between end hosts.
Provides host-to-host communication.
Routers operate in this layer
Transport Layer
Provides connectivity between end hosts on different networks, and logical addressing (IP addresses)
Network Layer
Provides node to node connectivity and data transfer.
Defines how data is formatted for transmission over a physical medium
Switches operate in this layer.
Data Link Layer
Defines physical requirements of the medium used for data transmission between devices.
Digital bits are converted into electrical or radio signals.
Physical Layer
PDU stands for
Protocol Data Units
The following are what?
* Data
* Segment
* Packet
* Frame
PDUs
