56. On a system using shadowed passwords, the correct permissions for /etc/passwd are ___ and the correct permissions
for /etc/shadow are ___.
A. -rw-r-, -r-
B. -rw-r-r-, -r-r-r-
C. -rw-r-r-, -r
D. -rw-r-rw-, -r-r-
E. -rw-, -r-
Answer: C
57. Of the ways listed, which is the best way to temporarily suspend a user’s ability to interactively login?
A. Changing the user’s UID.
B. Changing [...]
51. Which command allows you to make a shell variable visible to subshells?
A. export $VARIABLE
B. export VARIABLE
C. set $VARIABLE
D. set VARIABLE
E. env VARIABLE
Answer: B
52. What BASH environment variable will prevent you from overwriting a file with a “>” or “>>”?
A. set -o safe
B. set -o noglob
C. set -o noclobber
D. set -o append
E. set -o nooverwrite
Answer: [...]
46. A user complained that programs started from his shell won’t use his favorite editor. Which of the following files
would you edit to change this?
A. .editor
B. .bashrc
C. .bash_rc
D. ~/bash.conf
Answer: B
47. You are looking into a new script you received from your senior administrator. In the very first line you notice a #!
followed by a path [...]
41. Choose THREE websites that provide Linux-related news and documentation.
A. Linux Scoop
B. LWN.net
C. Tux Facts
D. Linux Today
E. NewsForge
Answer: BDE
42. What file is typically used to display messages at the login prompt when remote users telnet in to the machine?
A. /etc/issue
B. /etc/motd
C. /etc/net.banner
D. /etc/issue.net
Answer: D
43. The directory /usr/share/doc/ contains:
A. HTML versions of man pages.
B. man pages [...]
36. Which of the following services is NOT usually protected via TCP wrappers?
A. ftp
B. finger
C. auth
D. http
Answer: D
37. In the output of iptables -L -n is the line:
ACCEPT all – 10.69.70.5 0.0.0.0/0
listed under the INPUT chain. What does this line mean?
A. That all traffic from 0.0.0.0/0 to 10.69.70.5 is explicitly allowed.
B. TCP traffic to 10.69.70.5 [...]
31. Which of the following lines would you expect to see in the file /etc/hosts.allow?
A. in.tftpd: LOCAL
B. tftp dgram udp wait root /usr/sbin/tcpd in.tftpd
C. tftp 69/udp
D. udp 17 UDP
Answer: A
32. Which of the following lines would you find in the file /etc/hosts?
A. order hosts,bind
B. 192.168.168.4 dns-server
C. hosts: files,dns
D. domain mycompany.com
Answer: B
33. While checking your security, [...]
26. Which of the following PPP authentication protocols never sends a password in the clear?
A. PAM
B. PAP
C. PGP
D. CHAP
Answer: D
27. Which of the following IP networks does RFC1918 reserve for use on private intranets? (Select TWO answers)
A. 10.0.0.0
B. 224.0.0.0
C. 199.14.0.0
D. 172.152.0.0
E. 192.168.0.0
Answer: AE
28. The following output shows an excerpt from a standard networking configuration file:
time [...]
21. The normal way of starting your Apache server would be the command:
A. apachectl start
B. http -start
C. inetd apache
D. apachestart -n
E. apache start
Answer: A
22. Which configuration option can you use to prevent the root user from logging directly onto a machine using ssh?
A. NoRootLogon
B. PermitRootLogon No
C. NoRootLogon Yes
D. RootLogon = No
E. ProhibitRootLogon No
Answer: B
23. What [...]
16. You have a file /etc/resolv.conf, but the computer does not use the configured DNS servers to look up host names.
What is most likely the problem?
A. The hosts entry in your /etc/nsswitch.conf does not list dns.
B. You do not have a /etc/named.conf file.
C. The localhost hostname is not properly configured in /etc/hosts.
D. The named daemon [...]
6. What commands will load a kernel module? (Select TWO answers)
A. ldmod
B. modprobe
C. loadmod
D. insmod
E. modload
Answer: BD
7. Which command would you use to apply the changes in a diff file to your existing kernel source?
A. up2date
B. patch
C. rpm
D. dpkg
E. diff
Answer: B
8. Which utility is used to create the modules.dep file that is required by modprobe?
A. [...]