A web server is expected to handle approximately 200 simultaneous requests during normal use with an occasional spike in activity and is performing slowly. Which directives in httpd.conf need to be adjusted?

Consider the following / srv/www/ default/html/ restricted/.htaccess

AuthType Basic
AuthUserFile / srv/www/ security/ site-passwd
AuthName Restricted
Require valid-user
Order deny,allow
Deny from all
Allow from 10.1.2.0/24
Satisfy any

Considering that DocumentRoot is set to /srv/www/default/html, which TWO of the following sentences are true?

The mailserver is currently called fred, while the primary MX record points to mailhost.example.org. What must be done to direct example.org email towards fred?

Which option is used to configure pppd to use up to two DNS server addresses provided by the remote server?

To securely use dynamic DNS updates, the use of TSIG is recommended. Which TWO statements about TSIG are true?

What directive can be used in named.conf to restrict zone transfers to the 192.168.1.0/24 network?

What is the purpose of a PTR record?

A BIND server should never answer queries from certain networks or hosts. Which configuration directive could be used for this purpose?

Which of these would be the simplest way to configure BIND to return a different version number to queries?

What is a significant difference between host and zone keys generated by dnssec-keygen?