I am a web developer and software engineer currently living in Delhi, India. My interests range from technology to entrepreneurship. I am also interested in running, fitness, and programming.
Clear terminal with a shortcut
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Hey welcome to my blog. There is a simple command to clear out the terminal.
Timing breakdown phases explained Here's more information about each of the phases you may see in the Timing tab: Queueing (no-color, transparent, white ) . The browser queues requests when: The request was postponed by the rendering engine because it's considered lower priority than critical resources (such as scripts/styles). This often happens with images. The request was put on hold to wait for an unavailable TCP socket that's about to free up. The request was put on hold because the browser only allows six TCP connections per origin on HTTP 1. Time spent making disk cache entries (typically very quick.) Stalled/Blocking (grey) . Time the request spent waiting before it could be sent. It can be waiting for any of the reasons described for Queueing. Additionally, this time is inclusive of any time spent in proxy negotiation. Proxy Negotiation (grey): Time spent negotiating with a proxy server connection. DNS Lookup (Dark green) . Time spent p...
OSI model Open system interconnection model Communication between two computers connected through a cable and RJ connectors. Each layer is a package of protocols The app layer is not the application itself, but the protocols packages. 7 Layer model Application Layer: Uses protocols to access net Presentation Layer: Convert text/audio/video into binary Session Layer: Establishes the connection Transport Layer: Converts into segments and adds port number and sequence number into each segment. Network Layer: Convert segments into packets by adding logical address Data link Layer: Converts packets into frame by adding physical address Physical Layer: Transmits the data by converting into signals Application layer Is used by applications that use the internet like Google chrome, skype. Application layer provides services to network applications with the help of protocols to perform user activities. Protocols: HTT...
1. What if focal length Focal length is the distance from the center of the lens to the imaging point 2. Focal length and aperture relation: The aperture is a fraction that describes the ratio of aperture (entrance pupil) diameter to focal length. 3. How to differentiate between lenses: Camera name itself says, like: Nikon 18-55mm f/3.5-5.6 AF-P. Maximum aperture is f/3.5 but it shifts gradually from f/3.5 at the wide end to just f/5.6 at the longer focal lengths. It can be identified by column as well, like:Nikon 50mm 1:1.4G(Max aperture f/1.4). Nows lets get into the details: 1. What is focal length: Focal length is the distance from the center of the lens to the imaging point (focal plane) where the light for the image is collected. When a lens is described as a "50mm lens," it is referring to its focal length. Different focal lengths create different levels of magnification and change the viewing angle of the resulting photograph. As the focal length value decreases, the ...
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