Lpi LPIC Exam 303: Security, version 3.0 : 303-300 Exam Questions

  • Exam Code: 303-300
  • Exam Name: LPIC Exam 303: Security, version 3.0
  • Updated: Sep 11, 2026
  • Q&As: 163 Questions and Answers

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Lpi 303-300 Exam Syllabus Topics:

SectionObjectives
Topic 1: Vulnerability Assessment and Monitoring- Intrusion detection systems (IDS)
- Log analysis and auditing
Topic 2: Access Control- Discretionary Access Control (DAC)
- SELinux and AppArmor
- Mandatory Access Control (MAC)
Topic 3: Network Security- Secure network services
- VPN technologies
- Firewalls (iptables, nftables)
Topic 4: Application Security- Container and service security
- Secure software configuration
Topic 5: Cryptography- Data encryption and signing
- Public key infrastructure (PKI)
- OpenSSL usage and configuration
Topic 6: Security Administration- Authentication mechanisms
- System hardening

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

Question #1

Which command revokes ACL-based write access for groups and named users on the file afile?

  • A. setfacl ~m group: * : rx, user :*: rx afile
  • B. setfacl -x mask: : rx afile
  • C. setfacl -x group: * : rx, user:*: rx afile
  • D. setfacl ~m mask: : rx afile
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #2

Which of the following commands disables the automatic password expiry for the user usera?

  • A. chage --maxdays -1 usera
  • B. chage --lastday 0 usera
  • C. chage --lastday none usera
  • D. chage --maxdays 99 usera
  • E. chage --maxdays none usera
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #3

Which of the following prefixes could be present in the output of getcifsacl? (Choose THREE correct answers.)

  • A. SID
  • B. OWNER
  • C. GRANT
  • D. GROUP
  • E. ACL
Reveal Solution  Discussion  0

Correct Answer: A,D,E  🗳️

Question #4

Which of the following commands displays all ebtable rules contained in the table filter including their packet and byte counters?

  • A. ebtables -t nat -L -v
  • B. ebtables -t filter -Ln -L
  • C. ebtables -L -Lc -t filter
  • D. ebtables -t filter -L --Lc
  • E. ebtables -L -t filter -Lv
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #5

Which PAM module is used to enforce password complexity requirements, such as minimum length and character class requirements?

  • A. pam_unix
  • B. pam_cracklib or pam_pwquality
  • C. pam_access
  • D. pam_limits
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

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