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

303-300日本語 real exams

Exam Code: 303-300-JPN

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

Updated: Jul 25, 2026

Q & A: 163 Questions and Answers

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Lpi 303-300日本語 Exam Syllabus Topics:

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

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

1. 次の記述のうち、ndpmon の目的を説明しているものはどれですか?

A) ネットワーク インターフェイスを照会して、ネットワーク リンクの可用性を監視します。
B) 新しい IPv6 ホストおよびルータからの近隣探索メッセージをネットワーク上で監視します。
C) 定期的にエコー要求を送信してリモート ホストを監視します。
D) IPv6 にまだ移行していない IPv4 ノードのネットワークを監視します。
E) 問題のあるネットワーク ノードからのトラフィックをブロックするために、失敗したログイン試行のログ ファイルを監視します。


2. Fail2banの主な目的は何ですか?

A) ログファイルを監視し、認証失敗の繰り返しを検出し、ファイアウォールルールを使用して問題のあるIPアドレスを動的にブロックします。
B) ディスクに保存されているログファイルを暗号化します。
C) ファイアウォールの必要性を完全に排除する。
D) ユーザーアカウント用の強力なランダムパスワードを生成します。


3. SetUID ビットと SetGID ビットの違いは何ですか?

A) SetUIDとSetGIDの間に違いはありません
B) SetUID はファイル所有者の権限でファイルを実行できるようにしますが、SetGID はグループ所有者の権限でファイルを実行できるようにします。
C) SetUID を使用すると、ユーザーはファイルの所有者を変更できます。一方、SetGID を使用すると、ユーザーはファイルのグループ所有者を変更できます。
D) SetUIDはファイルに適用され、SetGIDはディレクトリに適用されます。


4. 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) 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。
C) 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。
D) デバイスのUUIDを保存します。


5. PAMを介してユーザーに適用される、最大オープンファイル数や最大プロセス数などのリソース制限のデフォルトセットを定義するファイルはどれですか?

A) /etc/pam.d/common-session
B) /etc/sysctl.conf
C) /etc/login.defs
D) /etc/security/limits.conf


Solutions:

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

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