1.1 OSI Model Layers Flashcards

1
Q

What is the OSI Model Stack from top to bottom?

Hint: Please Do Not Throw Sausage Pizza Away
or All People Seem To Need Data Processing

A

Layer 7: Application
Layer 6: Presentation
Layer 5: Session
Layer 4: Transport
Layer 3: Network
Layer 2: Data Link
Layer 1: Physical

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2
Q

What does Layer 1 of the OSI Model include and what is it’s Protocol Data Unit (PDU)?

A

Media, signal, and binary transmission. The physical hardware.
PDU: Bit

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3
Q

What does Layer 2 of the OSI Model include and what is it’s Protocol Data Unit (PDU)?

A

Gets the data to the physical layer. Also handles error correction.
Sub layers are: Logical Link Control (LLC) and MAC (Physical) Addressing
Ethernet
PDU: Frame

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4
Q

What does Layer 3 of the OSI Model include and what is it’s Protocol Data Unit (PDU)?

A

Path determination and IP (Logical) Addressing.
PDU: Packet

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5
Q

What does Layer 4 of the OSI Model include and what is it’s Protocol Data Unit (PDU)?

A

End to end connections and reliability.
TCP and UDP.
PDU: Segment

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6
Q

What does Layer 5 of the OSI Model include?

A

Synchronizes data between
applications on two different
devices.

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7
Q

What does Layer 6 of the OSI Model include?

A

Data encoding and encryption.

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8
Q

What does Layer 7 of the OSI Model include?

A

Serves to provide processes
that enable applications to use
network services.

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9
Q

What is the TCP/IP Stack from top to bottom?

A

Layer 4: Application
Layer 3: Transport
Layer 2: Internet
Layer 1: Network Access

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