Lpi LPIC Exam 303: Security, version 3.0 (303-300日本語版) : 303-300日本語

  • Exam Code: 303-300日本語
  • Exam Name: LPIC Exam 303: Security, version 3.0 (303-300日本語版)
  • Updated: Aug 13, 2026
  • Q & A: 163 Questions and Answers

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Lpi 303-300日本語 Exam Syllabus Topics:

SectionWeightObjectives
Cryptography8%- Data Encryption
  • 1. Secure data transmission
  • 2. Use LUKS and dm-crypt
  • 3. Encrypt files and storage devices
- X.509 Certificates and Public Key Infrastructures
  • 1. Manage certificate authorities
  • 2. Create and manage certificates
  • 3. Certificate revocation and validation
- OpenPGP
  • 1. Manage GnuPG keys
  • 2. Sign and encrypt data
  • 3. Web of trust concepts
Threats and Vulnerability Assessment3%- Threat Analysis
  • 1. Credential and confidentiality threats
  • 2. Application threats
  • 3. Network threats
  • 4. Host-based threats
- Vulnerability Assessment
  • 1. OpenVAS
  • 2. Risk identification
  • 3. Security scanning
Network Security12%- Network Hardening
  • 1. Secure network services
  • 2. TCP wrappers and service restrictions
- Network Intrusion Detection
  • 1. Snort
  • 2. Wireshark
  • 3. Kismet
  • 4. tcpdump
- Virtual Private Networks
  • 1. IPsec and strongSwan
  • 2. WireGuard
  • 3. OpenVPN
- Packet Filtering
  • 1. IP sets
  • 2. nftables awareness
  • 3. NAT and connection tracking
  • 4. iptables and ip6tables
Host Security9%- Resource Control
  • 1. Process resource management
  • 2. ulimits
  • 3. cgroups
- Host Hardening
  • 1. Service hardening
  • 2. Secure boot process
  • 3. Kernel runtime protection
- Host Intrusion Detection
  • 1. Linux Audit system
  • 2. AIDE integrity checking
  • 3. Malware detection
  • 4. Rootkit detection tools
Access Control8%- Authentication and Authorization
  • 1. PAM
  • 2. Multi-factor authentication
  • 3. Centralized authentication
- Discretionary Access Control
  • 1. POSIX ACLs
  • 2. Extended attributes
  • 3. File permissions
- Mandatory Access Control
  • 1. SELinux management
  • 2. Policy enforcement
  • 3. AppArmor configuration

Lpi LPIC Exam 303: Security, version 3.0 (303-300日本語版) Sample Questions:

1. Linux システムにおけるファイル所有権の目的は何ですか?

A) 複数のユーザーが同時にファイルにアクセスできるようにする
B) ファイルが誤って削除されるのを防ぐため
C) ファイルが定期的にバックアップされるようにする
D) ファイルへのアクセスを所有者のみに制限する


2. 証明書失効リスト (CRL) とは何ですか?

A) 特定の CA によって発行された X.509 証明書のリスト
B) 侵害された秘密鍵のリスト
C) 特定の CA によって失効された X.509 証明書のリスト
D) 侵害された公開鍵のリスト


3. マウントされたファイルシステム上のバイナリの実行を防止するマウントオプションはどれですか?

A) nosuid
B) noexec
C) nodev
D) ro


4. X.509 証明書を送信するために一般的に使用されるプロトコルはどれですか?

A) SMTPS
B) FTPS
C) HTTPS
D) LDAP


5. LUKSキースロットの目的は何ですか?

A) 暗号化ボリュームで使用されるファイルシステムの種類を定義します。
B) マスターキーの暗号化されたコピーを保存し、特定のパスフレーズまたはキーファイルで保護することで、複数の独立したロック解除方法を可能にします。
C) デバイスのUUIDを保存します。
D) 冗長性のために暗号化されたデータのコピーを保存します。


Solutions:

Question # 1
Answer: D
Question # 2
Answer: C
Question # 3
Answer: B
Question # 4
Answer: D
Question # 5
Answer: B

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