SY0-501 · Question #97
Drag and Drop Question Drag and drop the correct protocol to its default port. Answer:
The correct answer is 21; 23; 25; 161; 22; 69. The correct port-to-protocol mapping follows well-established networking standards: FTP uses port 21, Telnet uses port 23, SMTP uses port 25, SNMP uses port 161, SSH uses port 22, and TFTP uses port 69. These are IANA-assigned default ports that network professionals must…
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Exhibits
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Drag items
Correct arrangement
- 21
- 23
- 25
- 161
- 22
- 69
Explanation
The correct port-to-protocol mapping follows well-established networking standards: FTP uses port 21, Telnet uses port 23, SMTP uses port 25, SNMP uses port 161, SSH uses port 22, and TFTP uses port 69. These are IANA-assigned default ports that network professionals must memorize, as they are foundational to understanding network services and configuring firewalls, ACLs, and security policies. Confusing these ports is a common mistake, especially between similar protocols like FTP (21) and SSH (22), or Telnet (23) and SMTP (25).
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