SK0-004 · Question #84
A system administrator is tasked to enable authentication on a web server's login page. One of the requirements for the web server is to encrypt authenticated sessions over HTTP protocol for all…
The correct answer is D. 443. HTTPS uses port 443 by default to encrypt HTTP traffic with TLS, satisfying the requirement to protect authenticated sessions for web pages. Port 443 is the only choice that provides encrypted HTTP communication.
Question
A system administrator is tasked to enable authentication on a web server's login page. One of the requirements for the web server is to encrypt authenticated sessions over HTTP protocol for all static HTML pages. Using the information supplied, which of the following default port numbers should be used to satisfy these requirements?
Options
- A53
- B8080
- C143
- D443
How the community answered
(33 responses)- B3% (1)
- C3% (1)
- D94% (31)
Why each option
HTTPS uses port 443 by default to encrypt HTTP traffic with TLS, satisfying the requirement to protect authenticated sessions for web pages. Port 443 is the only choice that provides encrypted HTTP communication.
Port 53 is assigned to DNS for resolving domain names and does not provide any web server or encryption functionality.
Port 8080 is a common alternate port for plain unencrypted HTTP traffic and does not provide TLS encryption for sessions.
Port 143 is the default port for IMAP, an email retrieval protocol, and is unrelated to web server authentication or HTTP encryption.
Port 443 is the IANA-assigned default port for HTTPS, which wraps standard HTTP inside a TLS (Transport Layer Security) session. This encrypts all data exchanged between the browser and the web server, including login credentials and session tokens, fulfilling the requirement to encrypt authenticated sessions over HTTP. No configuration change is needed beyond enabling HTTPS on the server and binding it to port 443.
Concept tested: HTTPS default port 443 for encrypted web sessions
Source: https://learn.microsoft.com/en-us/iis/configuration/system.applicationhost/sites/site/bindings/binding
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