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

303-300日本語 real exams

Exam Code: 303-300-JPN

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
Threats and Vulnerability Assessment3%- Threat Analysis
  • 1. Credential and confidentiality threats
  • 2. Host-based threats
  • 3. Network threats
  • 4. Application threats
- Vulnerability Assessment
  • 1. OpenVAS
  • 2. Security scanning
  • 3. Risk identification
Host Security9%- Host Hardening
  • 1. Service hardening
  • 2. Kernel runtime protection
  • 3. Secure boot process
- Resource Control
  • 1. ulimits
  • 2. cgroups
  • 3. Process resource management
- Host Intrusion Detection
  • 1. Malware detection
  • 2. AIDE integrity checking
  • 3. Linux Audit system
  • 4. Rootkit detection tools
Access Control8%- Mandatory Access Control
  • 1. SELinux management
  • 2. Policy enforcement
  • 3. AppArmor configuration
- Discretionary Access Control
  • 1. File permissions
  • 2. POSIX ACLs
  • 3. Extended attributes
- Authentication and Authorization
  • 1. PAM
  • 2. Centralized authentication
  • 3. Multi-factor authentication
Cryptography8%- OpenPGP
  • 1. Sign and encrypt data
  • 2. Manage GnuPG keys
  • 3. Web of trust concepts
- Data Encryption
  • 1. Encrypt files and storage devices
  • 2. Secure data transmission
  • 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
Network Security12%- Network Intrusion Detection
  • 1. Kismet
  • 2. Wireshark
  • 3. Snort
  • 4. tcpdump
- Network Hardening
  • 1. TCP wrappers and service restrictions
  • 2. Secure network services
- 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

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

1. 書き込みアクセスを監視する一時的な監査ルールを追加するには、どのコマンドを使用しますか?
/etc/passwd ファイル?

A) auditctl -w /etc/passwd -p wa -k passwd_changes
B) ausearch -f /etc/passwd
C) auditd -w /etc/passwd
D) aureport -f /etc/passwd


2. Apache HTTPD 構成ファイルのどのオプションが OCSP ステープルを有効にしますか?
(値やパラメータなしでオプション名のみを指定します。)
解決策: httpd-ssl.conf
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)


3. 暗号化とは何ですか?

A) メッセージを解読する技術
B) 公的なメッセージを送信する技術
C) 秘密のメッセージを送る技術
D) 匿名メッセージを送信する技術


4. SetUID ビットと SetGID ビットの違いは何ですか?

A) 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。
B) 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。
C) SetUIDとSetGIDの間に違いはありません
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。


5. DNSSEC のキーを生成するために使用されるユーティリティは次のどれですか?

A) dnssec-keygen
B) dnssec-dsfromkey
C) delv
D) rndc


Solutions:

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

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