1.Which of the following SQL statements will select the fields name and address from the contacts table?

　　A.SELECT (name, address) FROM contacts;

　　B.SELECT (name address) FROM contacts;

　　C.SELECT name, address FROM contacts;

　　D.SELECT name address FROM contacts;

　　Answer: C

　　2.Which of the following find commands will print out a list of suid root files in /usr?

　　A.find /usr -uid 0 -perm +4000

　　B.find -user root +mode +s /usr

　　C.find -type suid -username root -d /usr

　　D.find /usr -ls \*s\* -u root

　　E.find /usr -suid -perm +4000

　　Answer: A

　　3.Which command is used to display user resource limits?

　　A.uname

　　B.limit -a

　　C.usrlmt

　　D.ulimit

　　Answer: D

　　4.Which configuration file would you edit to change default options for outbound ssh sessions?

　　A./etc/ssh/sshd_config

　　B./etc/ssh/ssh

　　C./etc/ssh/client

　　D./etc/ssh/ssh_config

　　E./etc/ssh/ssh_client

　　Answer: D

　　5.When using ssh, what can you do to recover a lost passphrase for a DSA or RSA authentication key?

　　A.Run the ssh-keygen command.

　　B.Run the ssh -recover command.

　　C.A lost passphrase cannot be recovered.

　　D.Decrypt the authentication key with gpg.

　　E.Decrypt the authentication key with ssh -decrypt.

　　Answer: C

　　6.Which file lists which users can execute commands using sudo? (Provide the full path and filename)

　　ANSWER: /ETC/SUDOERS