Useful tips for everyday
How many levels of QoS does MQTT support? 3 QoS levels There are 3 QoS levels in MQTT: At most once (0) At least once…
How do I move a row down in SQL? Moving a record up or down is done by swapping it with the record before or…
What is the period of a state in a Markov chain? Periodicity (source: wikipedia) A state i has period k if any return to state…
How can I improve my questioning techniques? Suggestions for developing better questioning skills: Talk less but ask more. Analyze your questions. Use more divergent questions.…
How do password reset links work? On the password reset page you take the username and token passed in, hash the token again then compare…
What is the function of the default gateway in a routing table? A default gateway is the node in a computer network using the internet…
How to calculate volume in qgis? How to Calculate Raster Surface Volume in QGIS Open Processing Toolbox, then select Raster analysis and choose Raster surface…
Can we send attachment in REST API? REST sends attachments as MIME parts in a message with multipart/form-data media type. How do I send files…
What causes a database connection error? The ‘Error establishing a database connection’ issue can be caused by incorrect database information in your WordPress settings, corrupt…
How do I connect my HD camera to my laptop? Connecting Your Digital Camera: Turn your computer on. Connect the cable to the USB port…