What option in the collectd configuration file is required in order to define what to start monitoring? A. LoadModule B. Module C. Plugin D. LoadPlugin

In the below example output, which columns detail the percent of time the CPU spent running non-kernel code and the percent of time the CPU spent running kernel code? (Choose TWO correct answers.) ...

Which commands below are useful to collect data about remote filesystem connections? (Choose TWO correct answers.) A. pidstat B. nfsiostat C. sadf D. cifsiostat

What mechanism does collectd use to gather monitoring information on systems? A. It uses a library of plugins. B. A master server connects to a collectd service on each machine to retrieve the inf...

Which of the following is a side effect of extensive usage of swap space? A. The root filesystem may become full because swap space is always located on the system root partition. B. The overall s...

In the following output, the load averages represent the system load averages for what time frames? 12:10:05 up 18 days, 19:00, 2 users, load average: 0.47, 24.71, 35.31 A. 1, 5 and 15 minutes ...

When planning a web server which of the following choices will impact system sizing? (Choose THREE correct answers.) A. How many concurrent users are expected. B. Which hardware vendor has better ...

FFmpeg Screen Recorder是筆者開發的一款開源小工具，可以在Linux上進行全螢幕或是視窗的錄影，也可以在錄影的同時錄下麥克風或是電腦播放的聲音。除此之外，FFmpeg Screen Recorder還支援了RTMP協定，可以即時地將目前電腦的畫面和聲音透過網路來直播。本篇文章也會提供使用FFmpeg Screen Recorder進行YouTube直播的方法哦！

GNU是一個Unix-like的作業系統，經常與Linux核心搭配在一起(GNU/Linux即為一般我們所說的「Linux作業系統」)。有許多軟體開發的程式都是運作在GNU的環境中，無法直接在Windows作業系統中使用，就得依靠如Cygwin和MinGW(Minimalist GNU for Windows)等軟體在Windows作業系統中，建立出GNU程式的開發環境。嚴格來說，Cygwin和M...

在西元2015年之後，我們所熟悉的HTTP網站已經被大多數人認為是不安全的網站了，許多瀏覽器甚至會直接針對沒有使用HTTPS協定的網站打上「不安全」的標籤，就連搜尋引擎也會降低HTTP網站的排名。因此讓網站支援SSL，並使用HTTPS協定進行傳輸，已經是再基本不過的事了。在過去使用公開的SSL時，通常都需要去向第三方安全認證機構購買所謂的「SSL憑證」，一直到2015年，Let's Encrypt...