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A browser sends a request but the page never loads. Which of these is a likely cause?

medium📝 Analysis Q6 of Q15
Intro to Computing - How the Internet Works
A browser sends a request but the page never loads. Which of these is a likely cause?
AThe browser sent the HTTP request correctly
BThe DNS server did not respond with an IP address
CThe user closed the browser before loading
DThe webpage was cached locally
Step-by-Step Solution
Solution:

  1. Step 1: Identify failure point in request process

    If DNS does not respond, the browser cannot find the server IP.

  2. Step 2: Understand impact on page loading

    Without IP, the browser cannot send HTTP request, so page never loads.

  3. Final Answer:

    The DNS server did not respond with an IP address -> Option B

  4. Quick Check:

    DNS failure = page won't load [OK]
Quick Trick: No DNS reply means no page load [OK]
Common Mistakes:
MISTAKES
  • Assuming HTTP request sent means success
  • Ignoring DNS role
  • Thinking cache affects initial load

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