Question: Identify all encapsulating protocol layers (TCP/IP model), well-known port numbers of the following frequently used application layer protocols. Assume Ethernet as network access layer (PHY
Identify all encapsulating protocol layers (TCP/IP model), well-known port numbers of the following frequently used application layer protocols.
Assume Ethernet as network access layer (PHY and DLL) protocol. Choose best candidate for other layers.
Important: There may be extra layers (repetition) or sublayers between the standard 4 layers. Insert or delete rows as you need.
HTTP is shown as an example.
| Popular name | HTTP | |
| Brief description | Used for communication to transfer web pages from server to the browser | |
| Application layer protocol | HyperText Transfer Protocol (HTTP) | |
| Transport layer protocol | TCP | Port: 80 |
| Network layer protocol | IP | |
| Network access layer protocol | Any (e.g. Ethernet) | |
| Popular name | FTP | |
| Brief description |
| |
| Application layer protocol |
| |
| Transport layer protocol |
| Port: |
| Network layer protocol |
| |
| Network access layer protocol |
| |
| Popular name | DNS | |
| Brief description |
| |
| Application layer protocol |
| |
| Transport layer protocol |
| Port: |
| Network layer protocol |
| |
| Network access layer protocol |
| |
| Popular name | DHCP | |
| Brief description |
| |
| Application layer protocol |
| |
| Transport layer protocol |
| Port: |
| Network layer protocol |
| |
| Network access layer protocol |
| |
| Popular name | SMTP | |
| Brief description |
| |
| Application layer protocol |
| |
| Transport layer protocol |
| Port: |
| Network layer protocol |
| |
| Network access layer protocol |
| |
| Popular name | POP3 | |
| Brief description |
| |
| Application layer protocol |
| |
| Transport layer protocol |
| Port: |
| Network layer protocol |
| |
| Network access layer protocol |
| |
| Popular name | IMAP | |
| Brief description |
| |
| Application layer protocol |
| |
| Transport layer protocol |
| Port: |
| Network layer protocol |
| |
| Network access layer protocol |
| |
| Popular name | Secure Shell (SSH) | |
| Brief description |
| |
| Application layer |
| |
| Transport layer |
| Port: |
| Network layer |
| |
| Network access layer |
| |
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