Computer Networks - OSI and TCP/IP Models
When a data packet is transmitted and encapsulated with headers in this sequence: Transport, Network, Data Link, Application, which header is stripped off first at the destination during decapsulation?
When a data packet is transmitted and encapsulated with headers in this sequence: Transport, Network, Data Link, Application, which header is stripped off first at the destination during decapsulation?
medium📝 Analysis Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Identify encapsulation order
The packet is encapsulated in the order: Transport, Network, Data Link, Application.Step 2: Understand decapsulation order
Decapsulation removes headers in the reverse order of encapsulation.Step 3: Determine first header removed
The last header added (Application) is removed last; the first header removed is the outermost header, which is Data Link.Step 4: Re-examine question
The question states the sequence as Transport, Network, Data Link, Application. Normally, Application is the innermost header, so it should be added first and removed last. The outermost header is Data Link, so it should be removed first.Final Answer:
Data Link -> Option AQuick Check:
Headers are removed from outermost to innermost [OK]
Quick Trick: Headers removed from outermost to innermost [OK]
Common Mistakes:
MISTAKES- Assuming headers are removed in the same order as added
- Confusing application layer header as outermost
- Ignoring the OSI layer encapsulation order
Master "OSI and TCP/IP Models" in Computer Networks
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Computer Networks Quizzes