Some abbreviation codes are called _____ codes because they use a specific combination of letters that are easy to remember.

A packet filter firewall is blocking ICMP protocols. This means that:

a. Pings cannot pass through the firewall b. Pings and Traceroute cannot pass through the firewall c. Traceroute cannot pass through the firewall d. IS-IS cannot pass through the firewall

Most Web pages have an .html or .htm extension because they are stored in ____ format.

A. DOCX B. XML C. HTML D. TXT