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

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

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Lpi 303-300日本語 Exam Syllabus Topics:

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

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

1. 次の DNS レコードのうち、IP アドレスをホスト名にマッピングするために使用されるものはどれですか?

A) NS
B) A
C) PTR
D) SOA


2. コンテナランタイムやサンドボックスツールが攻撃対象領域を縮小するためによく使用する、プロセスによるシステムコールへのアクセスを制限するLinuxカーネル機能はどれですか？

A) seccomp
B) 名前空間
C) 能力
D) cgroups


3. 次のコンポーネントのうち、FreeIPA に含まれるものはどれですか?
（正しい答えを3つ選んでください。）

A) ディレクトリサーバー
B) 公開鍵インフラストラクチャ
C) DHCP サーバー
D) 侵入検知システム
E) ケルベロス KDC


4. IP セットの目的は何ですか?

A) ローカル ネットワーク上のネイバーが使用する IP アドレスと MAC アドレスをグループ化します。
B) 同じネットワーク インターフェイスに割り当てられた IP アドレスをグループ化します。
C) netfilter ルールで参照できる IP アドレスをグループ化します。
D) ネットワーク ルーティング テーブルで参照できる IP アドレスとネットワークをグループ化します。
E) /etc/hosts.allowから参照できるIPアドレスとユーザー名をグループ化し、
拒否


5. 権限昇格とは何ですか?

A) 機密情報を盗むことを目的とした攻撃
B) ネットワークやサーバーに大量のトラフィックを流して利用不能にする攻撃
C) 脆弱性を悪用して権限を昇格させる攻撃
D) 特定のユーザーまたは組織を標的とした攻撃


Solutions:

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

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