Computer Science homework help

1) Research the variety of enumeration tools available. Select one tool and explain what it does, how it works and what type of information it extracts (example: Softerra LDAP Browser is the industry-leading software for browsing and analyzing LDAP directories. It provides a wide variety of features for handy viewing of directory contents, getting information about directory infrastructure and objects.)
2) Visit the “whois” website (https://www.whois.com/whois/). Find out who owns the site, who manages the site, the site creation date, the registry expiry date, and where they are located (what country) for each of the following sites:
a) Google
b) Bank of America, Bank of India, or Your bank
c) One more (your choice)
3) Describe some ways that an administrator can harden a system on a network.