問83
頻出度★★★
職場の PC に適用する情報セキュリティ対策 a～c のうち, マルウェア対策ソフトの導入のほかに, マルウェア感染を防止するための対策として, 適切なものだけを全て挙げたものはどれか。 a OS のセキュリティパッチ (修正モジュール) の適用 b 起動ドライブとなっているハードディスクに対するパスワード設定 c 複雑かつ十分な長さをもつログインパスワードの導入
令和8年度 ITパスポート試験 問83
This question's explanation and your answers so far.
解説
問 83
- ア
正解 The correct answer is “ア” (only a). The only measure effective for preventing malware infection is a, “Applying OS security patches (correction modules).” Most malware intrudes and infects by exploiting vulnerabilities (security holes) in the OS or software, so applying correction modules to close those vulnerabilities directly helps prevent infection. Both b and c are measures to prevent information leakage from unauthorized access or theft, and they do not block malware’s intrusion routes. Therefore, listing all and only the appropriate measures gives just a, and the answer is “ア”.
Incorrectイ
This option chooses “a, b,” but b, “Setting a password on the boot-drive hard disk,” is a measure to keep a third party from reading data when the PC is stolen or the disk is removed; it has no effect on preventing malware intrusion or infection. Only a is appropriate, so including b is wrong.
Incorrectウ
This option lists only b, but b is merely a measure to prevent unauthorized reading of data on the disk and does not prevent infection. On the contrary, it omits a, which is effective for preventing infection, so it is wrong.
Incorrectエ
c, “Login passwords that are complex and sufficiently long,” is a measure to prevent unauthorized login through guessing or password cracking; it does not prevent malware infection itself. It also fails to include a, which is effective for preventing infection, so it is wrong.
ここがポイント
- Malware infects by exploiting vulnerabilities in the OS or software, so applying security patches (correction modules) is the basic measure for preventing infection.
- Password settings (for the disk and for login) are measures to prevent information leakage from unauthorized access or theft; distinguish that their purpose differs from preventing malware infection.
用語