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# System prepended metadata

title: Computer network Assignment1

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# Computer network Assignment1

### Problem 1
1. ![](https://i.imgur.com/BEqg0SU.png)
2. youtube.com, streaming
3. 443

### Problem 2
1. ![](https://i.imgur.com/lY8PWoO.png)
2. 22
3. 
- My IP address is 140.112.243.25, which is public.
- private ip class
- class A 10.0.0.0 – 10.255.255.255
- class B 172.16.0.0 – 172.31.255.255
- class C 192.168.0.0 – 192.168.255.255
### Problem 3
1. same: Src Port, Dst port
2. diff: Sequence, Window, Urgent pointer
### Problem 4
1. ![](https://i.imgur.com/tvMkurz.png)
2. http://nasahw1.csie.ntu.edu.tw/netflix/ (not available now)
3. http doesn't encrpyt packege
### Problem 5
1. Packeges are encapsulated by many different layer protocal such as application, transport, network, link and physical layer.

- \(c\)