21. what system file contains definitions of well known ports, their associated services and protocols?
a. /etc/services
b. /etc/sysconfig/network-scripts
c. /etc/services.conf
d. /etc/inet/hosts
e. none of the choices

22. what is a well-known service that binds port 25 and is it required on all hosts?
a. snmp and it should be turned off if not needed.
b. smtp and it is a required service.
c. smtp and it is only required on mx hosts.
d. slpd and it is required if you run ldap services.
e. sshd and it is required for secure logins.

23. your machine has two working nic's with proper addresses. you want to split your network into two new subnets. what single command will accomplish this?
a. ifconfig
b. route
c. default
d. netstat
e. none of the choices

24. what directory be default contains the delivered mail for each user?
a. ~/mail/
b. /usr/mail/
c. /var/mail/
d. /var/mail/spool/
e. /var/spool/mail/

25. you are running an email server configured with the default settings. in which directory will you found the delivered mail for the user foo?
a. /var/spool/mail
b. /home/foo/mail
c. /var/mail/spool
d. /var/users/mail

26. you have a standard apache web server installation and want to make it respond to requests on port 8088. to do this, what configuration file do you need to change? from www.joxue.com
a. none. this is the default port.
b. /etc/httpd/apache.conf
c. /etc/httpd/ports.conf
d. /etc/httpd/httpd.conf
e. /etc/httpd/access.conf

27. what configuration file and directive will alter your apache server ip and or port that it listens to?
a. port
b. ipaddress
c. listen
d. minspareservers

28. what apache directive must you change when using inetd to control your apache server?
a. servertype
b. serverinetd
c. inetserver
d. startserver
e. servermethod

29. which apache directive specifies the location of the http documents?
a. rootdocument
b. serverroot
c. documentroot
d. rootserver
e. docpath

30. what command can be used to shut down the apache server gracefully?
a. apacheshut
b. apachectl
c. apachestop
d. apachestart