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Lpi 303-300日本語

303-300-JPN

Exam Code: 303-300-JPN

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

Updated: Aug 21, 2026

Q & A: 163 Questions and Answers

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Lpi 303-300日本語 Exam Syllabus Topics:

SectionWeightObjectives
Cryptography17%- X.509 Certificates for Encryption, Signing and Authentication
- DNS and Cryptography
- Encrypted File Systems
- X.509 Certificates and Public Key Infrastructures
Threats and Vulnerability Assessment5%- Common Security Vulnerabilities and Threats
- Penetration Testing
Access Control8%- Mandatory Access Control
- Discretionary Access Control
Host Security13%- Resource Control
- Host Hardening
- Host Intrusion Detection
Network Security17%- Virtual Private Networks
- Network Intrusion Detection
- Packet Filtering
- Network Hardening

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

1. DNS における TSIG の目的は何ですか?

A) DNSクエリを暗号化する
B) 安全な通信のためにDNSメッセージに署名する
C) DNSサーバーに関する情報を提供する
D) ドメイン名をIPアドレスにマッピングする


2. 次のデータベース名のうち、ネーム サービス スイッチ (NSS) 構成ファイル内で使用できるのはどれですか?(正しい回答を 3 つ選択してください)。

A) passwd
B) host
C) group
D) service
E) shadow


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


4. 証明書失効リスト (CRL) とは何ですか?

A) 侵害された秘密鍵のリスト
B) 特定の CA によって失効された X.509 証明書のリスト
C) 侵害された公開鍵のリスト
D) 特定の CA によって発行された X.509 証明書のリスト


5. 鍵に割り当てられるGnuPGの「信頼レベル」の目的は、その鍵に対する署名の目的と何が違うのでしょうか?

A) 鍵の真正性がどの程度強力に検証されているかを示します。
B) キーの有効期限を決定します。
C) キーシグネチャと意味が同じであり、冗長です。
D) これは、所有者がその鍵の所有者が他人の鍵を適切に確認し署名することをどれだけ信頼しているかを示します。


Solutions:

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

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