An enterprise web server receives an incoming HTTP request over a wired Ethernet network. Place the de-encapsulation steps performed by the receiving host's network stack in the correct chronological order from first to last.
- 1The Network Interface Card (NIC) converts incoming electrical signals from the physical cable into bits to reconstruct the raw Ethernet frame.
- 2The Data Link layer verifies the Frame Check Sequence (FCS), strips the Ethernet frame header and trailer, and inspects the EtherType field.
- 3The Network layer verifies that the destination IP address matches the server, removes the IP header, and evaluates the Protocol field.
- 4The Transport layer processes segment sequence numbers, verifies checksums, strips the TCP header, and delivers the payload to the listening web service process.
Cevap
The correct chronological sequence for de-encapsulation is: 1) NIC converts signals to raw Ethernet frame bits, 2) Data Link layer verifies FCS and strips MAC headers/trailers, 3) Network layer verifies destination IP and removes IP header, 4) Transport layer checks TCP headers and delivers payload to the application.
De-encapsulation processes inbound network traffic from the bottom of the OSI model to the top. The physical NIC first receives raw signals and converts them to bits. Next, the Data Link layer verifies frame integrity via FCS and removes Layer 2 MAC headers. Then, the Network layer inspects destination IP addresses and strips Layer 3 headers. Finally, the Transport layer processes TCP ports/checksums and hands off the bare application payload to the upper-layer web process.
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Anahtar Kavram
De-encapsulation sequence across OSI stack (Bottom-Up: Physical → Data Link → Network → Transport → Application)
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