a. What is the TCP/IP internet layer supervisory protocol? b. Describe ping. c. Describe ICMP error messages. d. What information does ping give an attacker? e. What information does tracert give an attacker? f. What information does an ICMP error message give an attacker?
a. Why would a host contact a DNS server? b. If a local DNS server does not know the IP address for a host name, what will it do? c. What kind of organization must maintain one or more DNS servers? d. What is DNS cache poisoning? e. Describe the status of DNSSEC. f. Why are root servers attacked?
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