Module 1.1 Flashcards
Assigns network and hardware components and functions at seven discrete layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
OSI Reference Model
What are the seven layers of the OSI Reference Model
Physical
Data Link
Netowrk
Transport
Session
Presentation
Application
Describing where data messages should go.
addressing
___________________ is describing how data messages should be packaged for transmission. ______________ is like an envelope for a letter, with the distinction that each layer requires its own envelope.
Encapsulation
To transmit or receive a communication, on each node, each layer provides _______ for the layer above and uses the _______ of the layer below. This is referred to as adjacent layer interaction.
services
At each level (except the physical layer), the sending node adds a header to the data payload, forming a “chunk” of data called a protocol data unit (PDU). This is the process of_________________
encapsulation
A physical signal conductor is provided between two nodes.
Cabled
Uses free space between nodes, such as microwave radio.
wireless
The layout of nodes and links as established by the transmission media
Physical Topology
A segment is where all the nodes share access to the same media.
Physical layer,
Mechanical specifications for the network medium, such as cable specifications, the medium connector and pin-out details (the number and functions of the various pins in a network connector), or radio transceiver specifications
Physical Interface
The process of transmitting and receiving encoded data over the network medium, including modulation schemes and timing/synchronization
Signaling
The part of a network interface that sends and receives signals over the network media.
Transciever
A device that amplifies an electronic signal to extend the maximum allowable distance for a media type.
Repeater
A multiport repeater, deployed as the central point of connection for nodes.
hub
