Lpi 303-300日本語 Q&A - in .pdf

  • 303-300日本語 pdf
  • Exam Code: 303-300日本語
  • Exam Name: LPIC Exam 303: Security, version 3.0 (303-300日本語版)
  • Updated: Aug 22, 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. Manage GnuPG keys
  • 2. Web of trust concepts
  • 3. Sign and encrypt data
- X.509 Certificates and Public Key Infrastructures
  • 1. Create and manage certificates
  • 2. Manage certificate authorities
  • 3. Certificate revocation and validation
- Data Encryption
  • 1. Encrypt files and storage devices
  • 2. Secure data transmission
  • 3. Use LUKS and dm-crypt
Topic 2: Access Control8%- Authentication and Authorization
  • 1. Centralized authentication
  • 2. Multi-factor authentication
  • 3. PAM
- Discretionary Access Control
  • 1. File permissions
  • 2. POSIX ACLs
  • 3. Extended attributes
- Mandatory Access Control
  • 1. Policy enforcement
  • 2. SELinux management
  • 3. AppArmor configuration
Topic 3: Network Security12%- Virtual Private Networks
  • 1. WireGuard
  • 2. IPsec and strongSwan
  • 3. OpenVPN
- Network Hardening
  • 1. TCP wrappers and service restrictions
  • 2. Secure network services
- Packet Filtering
  • 1. NAT and connection tracking
  • 2. iptables and ip6tables
  • 3. IP sets
  • 4. nftables awareness
- Network Intrusion Detection
  • 1. Wireshark
  • 2. tcpdump
  • 3. Snort
  • 4. Kismet
Topic 4: Host Security9%- Host Hardening
  • 1. Service hardening
  • 2. Kernel runtime protection
  • 3. Secure boot process
- Host Intrusion Detection
  • 1. Linux Audit system
  • 2. Malware detection
  • 3. Rootkit detection tools
  • 4. AIDE integrity checking
- Resource Control
  • 1. cgroups
  • 2. Process resource management
  • 3. ulimits
Topic 5: Threats and Vulnerability Assessment3%- Threat Analysis
  • 1. Host-based threats
  • 2. Application threats
  • 3. Credential and confidentiality threats
  • 4. Network threats
- Vulnerability Assessment
  • 1. Risk identification
  • 2. Security scanning
  • 3. OpenVAS

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

1. 次のコマンドのうち、ユーザー usera の自動パスワード有効期限を無効にするものはどれですか?

A) chage --maxdays -1 usera
B) chage --lastday none usera
C) chage --lastday 0 usera
D) chage --maxdays 99 usera
E) chage --maxdays none usera


2. セキュリティ評価の一環として、サービスやOSのフィンガープリンティングを含む包括的なネットワークポートスキャンを実行するために一般的に使用されるツールはどれですか?

A) Wireshark
B) netstat
C) tcpdump
D) nmap


3. OpenSSL 構成の次の行のうち、ホスト名 example.org および www.example.org の X 509v3 サブジェクト別名拡張を証明書に追加する行はどれですか。

A) commonName = subjectAltName= www.example.org, subjectAltName = example.org
B) subjectAltName: www.example.org, subjectAltName: example.org
C) extension= SAN: www.example.org, SAN:example.org
D) subjectAltName = DNS: www.example.org, DNS:example.org
E) subject= CN= www.example.org, CN=example.org


4. sysctl コマンドで変更できるデータはどのパスからアクセスできますか?

A) /dev/sys/
B) /proc/sys/
C) /sys/
D) /sysctl/


5. コマンド dnssec-signzone でゾーンに追加できる DNS レコード タイプは次のどれですか。
(正しい答えを3つ選んでください。)

A) NSSIG
B) NSEC3
C) NSEC
D) アシグ
E) RRSIG


Solutions:

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

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