CompTIA Tech+ (FC0-U71)Applications and SoftwareHard
A user is experiencing issues with their web browser, where some websites load correctly but others display 'Your connection is not private' errors, preventing access. The user also notes that the system clock on their computer frequently shows the incorrect time and date. What is the MOST likely cause of these web browsing issues?
- AIncorrect system date and time
- BDNS server misconfiguration
- COutdated browser version
- DCorrupted browser cache
Show answer & explanationAnswer & explanation
Correct answer: A. Incorrect system date and time
SSL/TLS certificates, used by HTTPS websites, have validity periods. If the system's date and time are significantly incorrect, the browser cannot properly validate these certificates, leading to 'Your connection is not private' errors. The incorrect system clock is a direct indicator of this problem.
Why the other options are wrong
- B. DNS issues typically manifest as 'website not found' or general connectivity problems, not specific certificate errors.
- C. An outdated browser might cause rendering issues or security warnings, but 'connection is not private' specifically points to certificate validation, which is highly sensitive to time.
- D. A corrupted browser cache can cause loading issues or outdated content but is unlikely to trigger 'connection is not private' errors related to certificate validation.
SSL/TLS Certificate Validation
The process by which a web browser verifies the authenticity and validity of a website's SSL/TLS certificate.
- Ensures secure connection (HTTPS).
- Relies on correct system date/time.
- Verifies certificate chain of trust and expiry.
Memory trick: Time is Key for Certificate Security.