A network technician is using a packet capture utility to inspect outbound host traffic during an HTTPS session initiation. Arrange the following data encapsulation steps in the correct chronological sequence from the initial application request generation down to media transmission.
- 1Application data is formatted and encrypted into an HTTPS message payload.
- 2A TCP header specifying source and destination port numbers (e.g., port 443) is prepended to form a segment.
- 3An IP header specifying logical source and destination IP addresses is prepended to form a packet.
- 4An Ethernet header containing physical MAC addresses and a FCS trailer are added to form a frame.
- 5The frame is converted into electrical or optical signals for transmission across the physical media as bits.
Answer
The correct order follows the top-down OSI encapsulation model: Application data formatting (Upper layers), TCP segment creation with port numbers (Transport layer), IP packet creation with logical addresses (Network layer), Ethernet frame creation with MAC addresses (Data Link layer), and bit signal conversion (Physical layer).
During outbound network transmission, data is processed sequentially from Layer 7 (Application) down to Layer 1 (Physical). Application data is first generated, then encapsulated into a Transport layer segment (TCP/UDP ports), further encapsulated into a Network layer packet (IP addresses), wrapped into a Data Link layer frame (MAC addresses and FCS trailer), and finally converted into physical signals (bits) at the Physical layer.
Step-by-Step Solution
Key Concept
OSI Model Encapsulation Sequence
Estimated Time:1m 30s