Useful tips for everyday
How do I check disk IO performance? #2 Monitoring Windows Disk I/O utilization There are already many pre-loaded counters, select all and press the DEL…
How do you calculate z-scores for normally distributed data? The formula for calculating a z-score is is z = (x-μ)/σ, where x is the raw…
How many private keys are there for each public key? one private key In public key cryptography, every public key matches to only one private…
How do you use and condition in Google Sheets? To use AND within an IF formula, type =IF(AND(AND Argument 1), Value IF TRUE, Value IF…
What is the file extension for encryption? Files are often encoded for security purposes and to keep them from being corrupted during data tranfers. Common…
How do you create an ISO file in Linux? To create a multiple-word name, place underscores between words (e.g., “blueberry pie” becomes “blueberry_pie”). Press ↵…
How are satellite images different from photographs? Satellite images are exclusively digital and are taken using a series of electronic scanners incorporated in satellites that…
How do I block text messages from unknown numbers? On an Android, open your phone app and tap on the three-dot icon in the upper…
Why do some websites not start with www? In the case of Web sites that happen to work without the “www” prefix, it simply means…
How much computing power does Google use? According to Google, their global data center operation electrical power ranges between 500 and 681 megawatts. The combined…