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Lpi LPIC Exam 303: Security, version 3.0 Sample Questions:

1. Which of the following DNS records are used in DNSSEC?

A) RRSIG
B) MX
C) PTR
D) TXT

2. What is the purpose of IP sets?

A) They group together IP and MAC addresses used by the neighbors on the local network.
B) They group together IP addresses that can be referenced by netfilter rules.
C) They group together IP addresses and user names that can be referenced from /etc/hosts.allow and
/etc/hosts.deny
D) They group together IP addresses and networks that can be referenced by the network routing table.
E) They group together IP addresses that are assigned to the same network interfaces.

3. What is the purpose of file ownership in Linux systems?

A) To restrict access to files only to their owner
B) To protect files from being accidentally deleted
C) To enable multiple users to access files simultaneously
D) To ensure that files are backed up regularly

4. What is the purpose of an access control list in Linux?

A) To specify fine-grained permissions for users and groups
B) To encrypt a file for secure transmission
C) To compress a file to save disk space
D) To mark a file as executable

5. Which of the following practices are important for the security of private keys?
(Choose TWO correct answers.)

A) Private keys should be uploaded to public key servers.
B) Private keys should be created on the systems where they will be used and should never leave them.
C) Private keys should always be stored as plain text files without any encryption.
D) Private keys should be included in X509 certificates.
E) Private keys should have a sufficient length for the algorithm used for key generation.

Solutions: