Useful tips for everyday
How does an image kernel work? An image kernel is a small matrix used to apply effects like the ones you might find in Photoshop…
What is the region of rejection for a one tail Z test? Rejection region is in the negative section of the z (standard normal) distribution.…
How do I switch between 2 graphics cards? To switch to your NVidia dedicated GPU, Right-click the blank space on the desktop, select NVIDIA Control…
What are the geometric standards for taxiway? Its longitudinal grade should not be greater than 3% while it s transverse gradient should not be less…
What is HSRP tracking? Interface tracking allows you to specify another interface on the router for the HSRP process to monitor in order to alter…
What is yank in vi editor? The vi yy command “yanks” the current line into the vi general buffer. That is, it copies the line…
What is authentication session token? Token-based authentication is a protocol which allows users to verify their identity, and in return receive a unique access token.…
Can mirroring be done in data synchronization? Synchronous mirroring is an approach to data protection that involves data being written to a remote site and…
How do I SSH into an EC2 instance with a public IP? Open the Amazon EC2 console at https://console.amazonaws.cn/ec2/ . In the navigation pane, choose…
How does explain work in SQL? The EXPLAIN statement provides information about how MySQL executes statements: EXPLAIN works with SELECT , DELETE , INSERT ,…