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4 Answers

Best answer
16 votes
16 votes
Data length $ = 200 – 4 \times 5=180$

Starting number of the first byte of fragment $ = 100\times8=800$

Number of the last byte $ = 800+179 = 979$

$\mathbf{Ans}\;\textbf C$
edited by
4 votes
4 votes
$\mathbf{Option \;C}$

Total Length=$200$

Data field excluding header=$ 200-20 = 180(0 \dots 179)$

No of byte ahead from this packet is $ = 100\times8 = 800$

so last byte = $800+179=979$
edited by
3 votes
3 votes
Header

Payload

An IP packet looks like this.

Header Length = $5*4=20$

So, Payload = $200-20=180$

 

Fragmentation offset = $100*8=800$

The last byte would be $180 + 800$th = $980th$ but since we number everything from 0 in computer science, it'll be $979th$

Answer:

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