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| Section | Objectives |
|---|---|
| Linux Kernel | - Runtime kernel management
|
| System Startup | - Boot process and system initialization
|
| Capacity Planning | - Predict resource needs
|
| Filesystems and Devices | - Storage configuration and management
|
DNS サーバーがクエリを受信できるようにするには、ファイアウォール上でどのポートを開く必要がありますか? (ポート番号のみを入力してください)。
Reveal Solution Discussion 0Correct Answer:
53
次の出力では、CPUが保留中のI / Oを待っていた時間は何%ですか?
# vmstat 1 100
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 0 282120 134108 5797012 0 0 0 2 0 0 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 359 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1117 577 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 366 0 0 100 0
Correct Answer: E 🗳️
以下のコマンドは、リモートファイルシステム接続に関するデータを収集するのに便利です。
(2つの正解を選んでください)
Correct Answer: A,D 🗳️
次のtopからの出力では、どのプロセスがCPUがwaの状態で過ごす時間のパーセンテージに貢献していますか?
Tasks: 193 total, 1 running, 190 sleeping, 2 stopped, 0 zombie
Cpu(s): 0.5%us, 0.3%sy, 0.0%ni, 98.2%id, 1.0%wa, 0.0%hi, 0.0%si, 0.0%st
Correct Answer: B 🗳️
update-rc.dコマンドの-fオプションは、/etc/rcX.d/および/etc/init.d/ディレクトリのファイルにどのような影響を与えますか?
Correct Answer: A 🗳️
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