OSI Model Flashcards
The OSI Model (Open Systems Interconnect) Model was developed to establish a set of ________ for network communication.
standards
The OSI model describes how information from ________ in one computer moves through a network to reach software in another ________.
software, computer
The OSI model achieves this by breaking down the task of data communication into __________ different layers.
seven
These layers are numbered __________, starting from the bottom.
1-7
The layers of the OSI model, starting from the bottom, include: __________, __________, __________, __________, __________, __________, and __________.
Physical, Data Link, Network, Transport, Session, Presentation, and Application.
When two computers want to communicate, the data flows ____ the OSI model, and when the data crosses over the network media such as the internet, it flows back __ the OSI model to its destination.
down, up
(Application) The top layer of the OSI model is the __________ layer.
application
(Application) This layer deals with __________.
applications
(Application) This layer is to manage communications between __________.
applications
(Application) Supports application protocols such as __________, __________, and __________.
email, HTTP, FTP
(Application) At this layer, data still resembles something that __________ can read.
people
(Presentation) The presentation layer is where data is first converted into a ____ that can be sent over a network.
form
(Presentation) Data is compressed and _________ and encrypted or ________.
decompressed, decrypted
(Presentation) Sometimes referred to as the ________layer.
translation
(Session) This layer controls the dialog during ___________.
communications
(Session) It establishes, manages, and terminates the connections between the __________ and __________ application.
local, remote
(Session) This layer is known as the __________ because it directs network traffic.
traffic cop
(Transport) This layer provides the transfer of data between __________ users.
end
(Transport) It is responsible for resending any packets that do not receive an acknowledgement from the __________.
destination
(Transport) This layer can guarantee that __________ are received.
packets
(Network) This layer is responsible for routing the data packet based on its logical __________ address.
IP
(Network) It fragments and __________ the packets.
reassembles
(Network) This layer instructs data on how to find its ultimate ___________.
destination
(Data Link) This layer is responsible for sending data to the __________ layer.
physical
(Data Link) Data packets are encoded and decoded into __________.
bits
(Data Link) This layer handles ____ ______ and frame synchronization.
flow control
(Data Link) It is divided into 2 sub-layers, ____ ____ ______ (MAC) and _______ _____ ______ (LLC)
Media Access Control, Logical Link Control
(Physical) The bottom of the OSI model is the __________ layer.
Physical
(Physical) This layer defines the network standards and ________ characteristics of a network, such as connectors, media types, cables, voltages, and etc.
physical
(Physical) This layer defines the ________ of a network.
topology
