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

  • Exam Code: 303-300日本語
  • Exam Name: LPIC Exam 303: Security, version 3.0 (303-300日本語版)
  • Updated: Jul 26, 2026     Q & A: 163 Questions and Answers

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Lpi 303-300日本語 Exam Syllabus Topics:

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


2. 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) HTTPS
B) SMTPS
C) FTPS
D) LDAP


3. 次のコマンドのうち、SSSD のローカル サービスを使用してユーザーを追加するものはどれですか?

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


4. pam_tally2モジュールまたはpam_faillockモジュールの目的は何ですか？

A) パスワード有効期限ポリシーを適用する。
B) ユーザーセッションごとのリソース使用量を制限する。
C) ログイン失敗回数を追跡し、指定された回数の失敗後にアカウントをロックします。
D) 多要素認証を要求する。


5. HID はどのような種類のアクティビティを監視しますか?

A) ファイルとフォルダの変更
B) マルウェア感染
C) 不正アクセスの試み
D) ネットワークトラフィック


Solutions:

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

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