Easily block unwanted websites on Windows by editing the hosts file. Follow this comprehensive guide to safely modify hosts file and clear browser cache for effective domain blocking.
Table of Contents
Question
A technician is editing the hosts file on a few PCs in order to block certain domains. Which of the following would the technician need to execute after editing the hosts file?
A. Enable promiscuous mode.
B. Clear the browser cache.
C. Add a new network adapter.
D. Reset the network adapter.
Answer
B. Clear the browser cache.
Explanation
To block certain domains by editing the hosts file, the technician would need to clear the browser cache (Option B) after making the necessary changes to the hosts file.
The hosts file is a locally stored file that maps hostnames to IP addresses, allowing local resolution of hostnames without querying external DNS servers. Blocking domains can be achieved by adding entries that map the unwanted domain names to the loopback IP address (127.0.0.1) or a non-routable IP address (e.g., 0.0.0.0).
After modifying the hosts file, clearing the browser cache is necessary to ensure that the changes take effect. Web browsers cache DNS lookups and website data for performance reasons. If the cache is not cleared, the browser may continue to use the previously cached information, rendering the hosts file edits ineffective.
Option A (Enable promiscuous mode) is incorrect because promiscuous mode is a network adapter setting that allows the adapter to capture and read all network traffic, regardless of the destination address. It is not related to blocking domains through the hosts file.
Option C (Add a new network adapter) and Option D (Reset the network adapter) are also incorrect because modifying the hosts file does not require any changes to the network adapter configuration.
In summary, clearing the browser cache (Option B) is the correct step to take after editing the hosts file to ensure the domain blocking changes are effective.
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