Question at position 7 In the OSI network layer hierarchy as the data packet moves from the lower to the upper layers, headers areRearrangedModifiedAddedRemoved单项选择题
A
Rearranged
B
Modified
C
Added
D
Removed

Question

Question at position 7 In the OSI network layer hierarchy as the data packet moves from the lower to the upper layers, headers areRearrangedModifiedAddedRemoved

BlackTom AI · Accepted Answer

Question: In the OSI network layer hierarchy as the data packet moves from the lower to the upper layers, headers areRearrangedModifiedAddedRemoved
Options: ["Rearranged", "Modified", "Added", "Removed"]

Option 1 — Rearranged: While moving upward through the layers, the packet’s headers aren’t simply rearranged. Each layer typically passes data up with its own header removed and, in the downward direction, headers are added by the corresponding layers. Reordering of existing headers is not the standard behavior described by the OSI decapsulation process, so this is not correct.

Option 2 — Modified: The headers are generally not modified as they are stripped away during decapsulation. The process is more about removal (decapsulation) rather than changing the remaining data. Therefore, this statement is inaccurate.

Option 3 — Added: Adding headers occurs when data travels downward through the layers (encapsulation). As you ascend the stack, the headers are removed, not added. This makes this option incorrect for the described upward movement.

Option 4 — Removed: Correct. During decapsulation, moving from the lower layers to the upper layers, each layer’s header is removed as the packet is processed, until the payload reaches the presentation/application layers. This matches the standard OSI model behavior of decapsulation.

Summary: The OSI model uses a process of encapsulation (adding headers as data moves downward) and decapsulation (removing headers as data moves upward). Among the given choices, only "Removed" accurately describes what happens to headers when the packet moves from lower to upper layers. The other options mischaracterize the behavior by suggesting rearrangement, modification, or addition of headers during upward traversal.

Question at position 7 In the OSI network layer hierarchy as the data packet moves from the lower to the upper layers, headers areRearrangedModifiedAddedRemoved单项选择题

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