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

303-300日本語 actual test
  • Exam Code: 303-300-JPN
  • Exam Name: LPIC Exam 303: Security, version 3.0 (303-300日本語版)
  • Updated: Aug 14, 2026
  • Q & A: 163 Questions and Answers
  • PDF Demo
  • PC Test Engine
  • Online Test Engine
  • Total Price: $69.99  

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Lpi 303-300日本語 Exam Syllabus Topics:

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

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

1. 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ランダムに生成されるキー
B) 暗号化と復号化に同じ鍵を使用する
C) 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
D) 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


2. TCPコネクトスキャン(nmap -sT)ではなく、TCP SYNスキャン(nmap -sS)を実行する目的は何ですか?

A) SYNスキャンは接続スキャンよりも遅いですが、精度が高いです。
B) 2種類のスキャンタイプに違いはありません。
C) SYNスキャンはUDPサービスに対してのみ使用できます。
D) SYNスキャンは完全なTCPスリーウェイハンドシェイクを完了しないため、より高速で、ターゲットアプリケーションにログが記録される可能性が低くなります。


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 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。
C) 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。
D) 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。


4. HID を実装するためのベスト プラクティスは次のどれですか。

A) 潜在的なセキュリティインシデントをセキュリティ担当者に警告するように HID を構成する
B) セキュリティインシデントを積極的に監視していない場合は HID を無効にする
C) HIDを設定してすべての着信トラフィックをブロックする
D) ネットワーク内のすべてのコンピュータにHIDをインストールする


5. 適切なネットワークと名前解決の設定がある場合、次のコマンドのどれが FreeIPA ドメインと Active Directory ドメイン間の信頼を確立しますか?

A) ipa ad join addom -U Administrator -w
B) trustmanager add --domain ad: //addom --user Administrator -w
C) ipa trust-add --type ad addom --admin Administrator --password
D) net ad ipajoin addom -U Administrator -p
E) ipa-ad -add-trust --account ADDOM\Administrator--query-password


Solutions:

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

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