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Lpi LPIC-3 303-300-JPN

303-300日本語

Exam Code: 303-300-JPN

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

Updated: Aug 12, 2026

Q & A: 163 Questions and Answers

303-300-JPN Free Demo download:

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Lpi 303-300日本語 Exam Syllabus Topics:

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

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

1. 証明書チェーンとは何ですか?

A) デジタル証明書の信頼性を検証するために使用される証明書のシーケンス
B) 証明書の信頼性を検証するために使用されるデジタル署名のチェーン
C) 暗号化と復号化に使用される公開鍵と秘密鍵のチェーン
D) 暗号化と復号化に使用される公開鍵と秘密鍵のシーケンス


2. トラストアンカーとは何ですか?

A) 特定のCAによって信頼されている公開鍵のリスト
B) 特定のCAによって信頼されているルート証明書
C) 特定のCAによって生成された鍵ペア
D) 特定のCAによって信頼されている秘密鍵のリスト


3. Linux におけるアクセス制御リストの目的は何ですか?

A) ファイルを実行可能としてマークする
B) ユーザーとグループに対してきめ細かな権限を指定する
C) ファイルを安全に転送するために暗号化する
D) ディスク容量を節約するためにファイルを圧縮する


4. BIND に含まれるどのコマンドが DNSSEC キーを生成しますか?
(パスやパラメータなしでコマンドのみを指定します。)
解決策: dnssec-keygen
与えられた解決策が正しいかどうかを判断します。

A) 正解
B) .偽


5. フィッシングとは何ですか?

A) ソーシャルエンジニアリング攻撃の一種
B) 正規のソフトウェアを装うマルウェアの一種
C) ウイルスの一種
D) サービス拒否攻撃の一種


Solutions:

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

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