Chapter 1: Compare the layers of the OSI and TCP/IP Models Flashcards Preview

CompTIA Network+ > Chapter 1: Compare the layers of the OSI and TCP/IP Models > Flashcards

Flashcards in Chapter 1: Compare the layers of the OSI and TCP/IP Models Deck (11)
Loading flashcards...
1

Layer 1-Physical
OSI

Electrical, mechanical, and procedural aspects of communication
-Defines the standard for the "wire" (or fiber optic, or wi-fi)

2

Layer 2-Data Link
OSI

Defines how we put data (1s and 0s) on the wire.

The Data Link Layer is split into two parts
-Logical Link Control (LLC)
-Media Access Control (MAC)

3

Layer 3-Network
OSI

Defines Logical addressing of computers and devices on the network.
-Logical addresses at the network layer are translated to physical at the Data Link Layer
-Primarily IP, but other protocols operate here

4

Layer 4-Transport
OSI

Defines the connection methods for communication.
-Some protocols established a guaranteed communication link, while others just whip their dick out for any devices "listening" on the wire
(TCP, UDP)

5

Layer 5-Session
OSI

Mostly for the establishment, maintenance, and termination of computer sessions
-Generally just establishes a communication link.

6

Layer 6-Presentation
OSI

Translating the stream of 1s and 0s on the wire
-Places information in a data stream the computer can understand
-Formats, encrypts, and compresses data

7

Layer 7-Application
OSI

The protocol that your application uses to begin to put data on the system
-Common example would be HTTP

8

Network Interface Layer
TCP/IP

Loosely aligns itself to the Physical and Data Link Layers (1 and 2)
Defines the wire and how data is put onto it

9

Internet Layer
TCP/IP

Loosely aligns itself with the Network Layer
-Logical communication links between computers, such as IPs
Largest example would be the Internet

10

Transport Layer
TCP/IP

Aligns itself to... The Transport Layer!
-TCP and UDP

11

Application Layer
TCP/IP

Aligns itself to the application, presentation, and session layers
-Protocols the user is utilizing, their translation in the network, and connection methods