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Zorluk: OrtaOSI Model Layers and Functions

A network technician is organizing documentation for network protocol operations and device functions across the Open Systems Interconnection (OSI) reference model. Match each OSI model layer on the left with its corresponding function and data structure on the right.

  • Layer 2 (Data Link Layer)PDU is a Frame; responsible for physical MAC addressing and node-to-node error detection using Frame Check Sequence.
  • Layer 3 (Network Layer)PDU is a Packet; responsible for logical IP addressing, path determination, and inter-network routing.
  • Layer 4 (Transport Layer)PDU is a Segment/Datagram; responsible for end-to-end service multiplexing using port numbers and flow control.
  • Layer 6 (Presentation Layer)PDU is Data; responsible for data formatting, character encoding translation, compression, and encryption/decryption.

Cevap

Layer 2 matches with Frame PDU and MAC addressing; Layer 3 matches with Packet PDU and IP routing; Layer 4 matches with Segment PDU and port multiplexing; Layer 6 matches with Data formatting, syntax encoding, and encryption.
Each OSI layer serves a specific role: Layer 2 processes Frames using MAC addresses; Layer 3 routes Packets using IP addresses; Layer 4 multiplexes application streams into Segments using port numbers; Layer 6 formats, encodes, and encrypts payload Data.

Adım Adım Çözüm

1
Identify the protocol data unit (PDU) and core function for Layer 2.
Layer 2 operates with Frames and hardware MAC addresses for adjacent node delivery.
Data Link controls access to the physical media and verifies frame integrity.
2
Identify the PDU and core function for Layer 3.
Layer 3 handles Packets, logical IP addresses, and routing between subnets.
Network layer provides end-to-end path determination across heterogeneous networks.
3
Identify the PDU and core function for Layer 4.
Layer 4 handles Segments/Datagrams and utilizes port numbers to direct traffic to correct process sockets.
Transport layer provides host-to-host connection management and flow control.
4
Identify the primary responsibility of Layer 6.
Layer 6 manages data representation, encoding standards, compression, and encryption.
Presentation layer ensures data sent by the application layer of one system is readable by the application layer of another.

Anahtar Kavram

OSI Model Layer Responsibilities and Protocol Data Units
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Konular

OSI Model Layers and Functions

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