Probability Basicsmedium
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A server is protected by two firewalls, and , which operate independently under normal conditions. Firewall fails to block a cyberattack with probability , and Firewall fails with probability . However, there is a chance of a power fluctuation that causes both firewalls to fail simultaneously regardless of their individual reliability. Assuming that either a power fluctuation occurs or normal conditions apply, what is the probability that an incoming cyberattack is successfully blocked by at least one firewall?
A server is protected by two firewalls, and , which operate independently under normal conditions. Firewall fails to block a cyberattack with probability , and Firewall fails with probability . However, there is a chance of a power fluctuation that causes both firewalls to fail simultaneously regardless of their individual reliability. Assuming that either a power fluctuation occurs or normal conditions apply, what is the probability that an incoming cyberattack is successfully blocked by at least one firewall?