You can block logical ports from invaders and make your computer invisible to others on the Internet by installing ________.
A) a packet sniffer
B) a firewall
C) a packet filter
D) antivirus software

Question

Quizplus · Accepted Answer

A firewall is designed to block unwanted access to a computer or network, and can be set up to block logical ports and make the computer invisible to others on the Internet. A packet sniffer and a packet filter are tools used to monitor and analyze network traffic, but they do not offer the same level of protection as a firewall. Antivirus software is designed to detect and remove viruses, but does not provide the same level of network protection as a firewall.

You Can Block Logical Ports from Invaders and Make Your