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Lpi LPI Level 3 Exam (LPI 303: Security) Sample Questions:

1. You wish to revoke write access for all groups and named users on a file. Which command will make the correct ACL changes?

A) setfacl x group:*:rx,user:*:rx afile
B) setfacl x mask::rx afile
C) setfacl m mask::rx afile
D) setfacl m group:*:rx,user:*:rx afile

2. What does the following iptables rule accomplish:
iptables A INPUT d 10.142.232.1 p tcp dport 20:21 j ACCEPT

A) Forwards all traffic not on port 20 or 21 to the host 10.142.232.1.
B) Accepts all traffic from the host 10.142.232.1 destined for port 20 or 21.
C) Forwards all traffic on port 20 and 21 to the host 10.142.232.1.
D) Drops all traffic coming from the host 10.142.232.1 destined for port 20 or 21.

3. What is the syntax error in the following simple Puppet configuration file?
class test_class { file { "/tmp/test.txt": mode => 600, owner => root, group => root } } # Define the node node testclient { isa test_class }

A) Comments begin with // character and not a #.
B) class, node and file sections require a semicolon (;) at the end of their definitions.
C) isa should be include.
D) The colon (:) after /tmp/test.txt should be a semicolon (;).

4. What is the purpose of the Safe Checks option in a Nessus configuration?

A) When validating a Nessus configuration file, the nessusd process will not be interrupted.
B) To prevent the use of plugins which may have a negative effect on the network being scanned.
C) Enables secure scanning over an encrypted tunnel.
D) To prevent the use of plugins which may leave the Nessus server vulnerable during the scanning process.

5. Which of the following can be done to secure a BIND server? (Select THREE correct answers)

A) Require clients to authenticate with a password before querying the server.
B) Run the BIND daemon as a nonroot user.
C) Configure ACLs.
D) Run the BIND daemon in a chroot jail
E) Encrypt DNS traffic using SSL/TLS.

Solutions: