Which default transmission port number is reserved for standard unencrypted Hypertext Transfer Protocol (HTTP) web communications?
Answer and explanation
Correct answer: B. Port 80
- Step 1: Port 80 is assigned by IANA for standard cleartext HTTP traffic. Step 2. Web browsers connect to port 80 by default when navigating to http:// URLs. Answer: Port 80. Why not the others: Port 443 is encrypted HTTPS; Port 21 is FTP file transfer; Port 25 is SMTP email routing.
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