A enterprise Linux server receives an inbound encrypted API call across a 10GbE fiber link. Place the following decapsulation steps in the correct sequential order from initial signal reception on the physical medium to final application-level payload consumption.
- 1Transducing optical pulses into raw binary bits at the Physical layer (Layer 1).
- 2Performing Cyclic Redundancy Check (CRC) framing validation and parsing destination MAC addresses at the Data Link layer (Layer 2).
- 3Evaluating destination IP headers, reassembling packet fragments, and checking Protocol IDs at the Network layer (Layer 3).
- 4Verifying TCP segment checksums, managing sequence numbers, and demultiplexing to the listening service using destination ports at the Transport layer (Layer 4).
- 5Decrypting TLS session cryptography and converting character syntaxes into structured JSON objects at the Presentation layer (Layer 6).
Cevap
The correct decapsulation sequence proceeds from Layer 1 to Layer 6: Physical layer optical-to-bit conversion → Data Link layer CRC framing and MAC parsing → Network layer IP evaluation and packet reassembly → Transport layer TCP port demultiplexing and sequence tracking → Presentation layer TLS decryption and syntax formatting.
Inbound data decapsulation strictly proceeds upward from Layer 1 through Layer 7. Physical media reception (converting optical signals into raw bits at Layer 1) occurs first. Next, the Data Link layer (Layer 2) validates the frame check sequence (FCS/CRC) and verifies MAC addresses. The Network layer (Layer 3) then inspects IP headers and handles fragmentation. The Transport layer (Layer 4) uses TCP ports to demultiplex the segment and ensure stream ordering. Finally, the Presentation layer (Layer 6) decrypts TLS encryption and formats data syntaxes (such as JSON) for consumption by the application.
Adım Adım Çözüm
Anahtar Kavram
OSI Model Decapsulation Data Flow