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

  • Exam Code: 303-300-JPN
  • Exam Name: LPIC Exam 303: Security, version 3.0 (303-300日本語版)
  • Updated: Aug 21, 2026
  • Q & A: 163 Questions and Answers

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Lpi 303-300日本語 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Network Security12%- Packet Filtering
  • 1. iptables and ip6tables
  • 2. NAT and connection tracking
  • 3. nftables awareness
  • 4. IP sets
- Virtual Private Networks
  • 1. OpenVPN
  • 2. IPsec and strongSwan
  • 3. WireGuard
- Network Intrusion Detection
  • 1. Snort
  • 2. Kismet
  • 3. tcpdump
  • 4. Wireshark
- Network Hardening
  • 1. Secure network services
  • 2. TCP wrappers and service restrictions
Topic 2: Cryptography8%- OpenPGP
  • 1. Web of trust concepts
  • 2. Sign and encrypt data
  • 3. Manage GnuPG keys
- Data Encryption
  • 1. Secure data transmission
  • 2. Encrypt files and storage devices
  • 3. Use LUKS and dm-crypt
- X.509 Certificates and Public Key Infrastructures
  • 1. Manage certificate authorities
  • 2. Create and manage certificates
  • 3. Certificate revocation and validation
Topic 3: Host Security9%- Host Hardening
  • 1. Secure boot process
  • 2. Kernel runtime protection
  • 3. Service hardening
- Resource Control
  • 1. ulimits
  • 2. Process resource management
  • 3. cgroups
- Host Intrusion Detection
  • 1. Rootkit detection tools
  • 2. Malware detection
  • 3. AIDE integrity checking
  • 4. Linux Audit system
Topic 4: Access Control8%- Discretionary Access Control
  • 1. Extended attributes
  • 2. POSIX ACLs
  • 3. File permissions
- Mandatory Access Control
  • 1. SELinux management
  • 2. AppArmor configuration
  • 3. Policy enforcement
- Authentication and Authorization
  • 1. PAM
  • 2. Multi-factor authentication
  • 3. Centralized authentication
Topic 5: Threats and Vulnerability Assessment3%- Vulnerability Assessment
  • 1. Risk identification
  • 2. Security scanning
  • 3. OpenVAS
- Threat Analysis
  • 1. Credential and confidentiality threats
  • 2. Host-based threats
  • 3. Application threats
  • 4. Network threats

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

1. eCryptfs に関して正しいのは次のうちどれですか?

A) eCryptfs は、通常の Linux ユーザーのホーム ディレクトリであるディレクトリのみを暗号化するために使用することはできません。
B) eCryptfs ディレクトリ内のすべてのファイルの内容は、パフォーマンスを向上させるために追加のインデックスが付いた tar ファイルに似たアーカイブ ファイルに保存されます。
C) eCryptfs ディレクトリ内のすべてのファイルには、暗号化されたコンテンツを含む対応するファイルが存在します。
D) eCryptfs ディレクトリをアンマウントした後も、ディレクトリ階層と元のファイル名は表示されますが、ファイルの内容を表示することはできません。
E) ユーザーがログイン パスワードを変更すると、eCryptfs ホーム ディレクトリの内容を新しいログイン パスワードを使用して再暗号化する必要があります。


2. ユーザーがファイルを削除できる権限ビットはどれですか?

A) 書く
B) 実行
C) UIDの設定
D) 読む


3. クライアントに代わって DNSSEC 検証を実行するために使用されるのは次のどれですか?

A) 再帰ネームサーバー
B) プライマリネームサーバー
C) セカンダリネームサーバー
D) 権威ネームサーバー


4. 非対称キーとは何ですか?

A) 暗号化と復号化の両方に使用されるキーで、ペアで生成される
B) 暗号化に使用されるキーと復号化に使用されるキーが異なる
C) 暗号化に使用されたキーとは異なる復号化に使用されるキー
D) 暗号化と復号化に同じ鍵を使用する


5. トロイの木馬とは何ですか?

A) フィッシング詐欺の一種
B) サービス拒否攻撃の一種
C) ウイルスの一種
D) 正規のソフトウェアを装ったマルウェアの一種


Solutions:

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

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