303-300日本語 Quiz Braindumps - 303-300日本語 Test Guide & 303-300日本語 Test Bootcamp

Lpi 303-300日本語 : 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: Sep 05, 2026

Q & A: 163 Questions and Answers

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Lpi 303-300日本語 Exam Syllabus Topics:

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

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

Question 1

次の openssl コマンドのうち、ファイル private/keypair.pem に含まれる既存の秘密鍵を使用して証明書署名要求 (CSR) を生成するものはどれですか。

A. openssl req -key private/keypair.pem -out req/csr.pem
B. openssl gencsr -key private/keypair.pem -out req/csr.pem
C. openssl gencsr -new- key private/keypair.pem -out req/csr.pem
D. openssl req - new -key private/keypair.pem -out req/csr.pem


Question 2

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. /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
C. 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。
D. 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。
E. netfilter ルールで参照できる IP アドレスをグループ化します。


Question 3

秘密鍵のセキュリティにとって重要な方法は次のとおりです。
(正しい答えを2つ選択してください。)

A. 秘密鍵は、それが使用されるシステム上で作成する必要があり、そのシステムから外に出てはなりません。
B. 秘密鍵は、鍵生成に使用されるアルゴリズムに対して十分な長さを持つ必要があります。
C. 秘密鍵は常に暗号化せずにプレーンテキストファイルとして保存する必要があります。
D. 秘密鍵は公開鍵サーバーにアップロードする必要があります。
E. 秘密鍵は X509 証明書に含める必要があります。


Question 4

pam_tally2モジュールまたはpam_faillockモジュールの目的は何ですか?

A. パスワード有効期限ポリシーを適用する。
B. 多要素認証を要求する。
C. ログイン失敗回数を追跡し、指定された回数の失敗後にアカウントをロックします。
D. ユーザーセッションごとのリソース使用量を制限する。


Question 5

eCryptfs に関して正しいのは次のうちどれですか?

A. eCryptfs ディレクトリをアンマウントした後も、ディレクトリ階層と元のファイル名は表示されますが、ファイルの内容を表示することはできません。
B. ユーザーがログイン パスワードを変更すると、eCryptfs ホーム ディレクトリの内容を新しいログイン パスワードを使用して再暗号化する必要があります。
C. eCryptfs は、通常の Linux ユーザーのホーム ディレクトリであるディレクトリのみを暗号化するために使用することはできません。
D. eCryptfs ディレクトリ内のすべてのファイルには、暗号化されたコンテンツを含む対応するファイルが存在します。
E. eCryptfs ディレクトリ内のすべてのファイルの内容は、パフォーマンスを向上させるために追加のインデックスが付いた tar ファイルに似たアーカイブ ファイルに保存されます。


Solutions:

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

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