What the heck is your username?
Answer:
April 30, 1993
Explanation:
On April 30, 1993, four years after publishing a proposal for “an idea of linked information systems,” computer scientist Tim Berners-Lee released the source code for the world’s first web browser and editor.
Only one daemon (server application) can bind to a port. The second one will fail.
The answer is two. Most people think it's one but it's 2
Answer:
Internet Control Message Protocol (ICMP) Echo Requests
Explanation:
A system that has Windows Firewall or antivirus or other third party antivirus enabled with their configuration setting set to default, ping command from another device will not be able to see if the device with an enabled firewall is alive.
The ping command sends Internet Control Message Protocol (ICMP) Echo Request to a destination device after the destination device will reply with a Reply packet. However, by default, firewalls, such as Windows firewall blocks ICMP Echo Requests from the external network and pinging will work when the firewall is disabled or an exception is created that lets ICMP Echo Requests pass through the firewall.
