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

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Lpi 303-300 Exam Syllabus Topics:

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

1. In GnuPG's web of trust model, what does it mean when User A signs User B's public key?

A) User A is granting User B permission to decrypt User A's messages.
B) User B's key is automatically revoked.
C) User A is vouching that they have verified the authenticity of User B's public key and its association with User B's identity.
D) User A's private key is now shared with User B.

2. Which of the following information, within a DNSSEC- signed zone, is signed by the key signing key?

A) The NSEC or NSEC3 records of the zone.
B) The zone signing key of the zone.
C) The DS records pointing to the zone.
D) The non-DNSSEC records like A, AAAA or MX.
E) The RRSIG records of the zone.

3. What is the purpose of Linux capabilities, as introduced to divide the traditional all-or-nothing root privilege model?

A) They replace the need for the setuid bit entirely on all binaries.
B) They control network bandwidth allocation per process.
C) They are used only within containerized environments.
D) They allow specific, granular privileges (such as binding to low-numbered ports) to be granted to a process without granting full root access.

4. In an IPsec implementation using strongSwan, what is the purpose of the Internet Key Exchange (IKE) protocol?

A) To encrypt the actual data payload of IPsec traffic.
B) To compress IPsec traffic before encryption.
C) To route IPsec packets across the internet.
D) To negotiate and establish the Security Associations (SAs) and cryptographic keys used by IPsec.

5. Which of the following commands adds users using SSSD's local service?

A) sss_adduser
B) sss_local_adduser
C) sss-addlocaluser
D) sss_add
E) sss_useradd

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