- Related Questions & Answers
This is a tutorial about how to build prototypes and interactions by making use of the pre-built components in Framer X and the ones available in the Framer Store.It should be useful for web designers having none to very little coding experience, interested in learning more about how to better communicate the interactions in the user interfaces they are building. Framer X Tutorials Framer; 6 videos; 29,192 views; Last updated on Nov 1, 2018; Watch this collection of videos to learn all about Framer X and see how it makes interactive design easier than ever.
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Computer NetworkComputer EngineeringMCA
X.25
X.25 is a protocol suite defined by ITU-T for packet switched communications over WAN (Wide Area Network). It was originally designed for use in the 1970s and became very popular in 1980s. Presently, it is used for networks for ATMs and credit card verification. It allows multiple logical channels to use the same physical line. It also permits data exchange between terminals with different communication speeds.
X.25 has three protocol layers
- Physical Layer: It lays out the physical, electrical and functional characteristics that interface between the computer terminal and the link to the packet switched node. X.21 physical implementer is commonly used for the linking.
- Data Link Layer: It comprises the link access procedures for exchanging data over the link. Here, control information for transmission over the link is attached to the packets from the packet layer to form the LAPB frame (Link Access Procedure Balanced). This service ensures a bit-oriented, error-free, and ordered delivery of frames.
- Packet Layer: This layer defines the format of data packets and the procedures for control and transmission of the data packets. It provides external virtual circuit service. Virtual circuits may be of two types: virtual call and permanent virtual circuit. The virtual call is established dynamically when needed through call set up procedure, and the circuit is relinquished through call clearing procedure. Permanent virtual circuit, on the other hand, is fixed and network assigned.
Equipment used
- X.21 implementer
- DTE − Data Terminal Equipmen
- DCTE − Data Circuit Terminating Equipment
Frame Relay
Frame Relay is a packet switched communication service from LANs (Local Area Network) to backbone networks and WANs. It operates at two layers: physical layer and data link layer. It supports all standard physical layer protocols. It is mostly implemented at the data link layer.
Frame Relay uses virtual circuits to connect a single router to multiple remote sites. In most cases, permanent virtual circuits are used, i.e. a fixed network-assigned circuit is used through which the user sees a continuous uninterrupted line. However, switched virtual circuits may also be used.
Frame relay is a fast packet technology based on X.25. Data is transmitted by encapsulating them in multiple sized frames. The protocol does not attempt to correct errors and so it is faster. Error correction is handled by the endpoints, which are responsible for retransmission of dropped frames
Frame Relay Devices are
- DTE − Data Terminal Equipment
- DCTE: − Data Circuit Terminating Equipment
Chrome Dev Summit 2020 is back & going virtual on December 9-10. Learn more
Chrome DevTools is a set of web developer tools built directly into the GoogleChrome browser. DevTools can help you editpages on-the-fly and diagnose problems quickly, which ultimately helps you build betterwebsites, faster. Swinsian 2 0 0 – music manager and player.
Check out the video for live demonstrations of core DevTools workflows, including debugging CSS,prototyping CSS, debugging JavaScript, and analyzing load performance.
Open DevTools
There are many ways to open DevTools, because different users want quick access to differentparts of the DevTools UI.
- When you want to work with the DOM or CSS, right-click an element on the page and select Inspectto jump into the Elements panel. Or press Command+Option+C (Mac) orControl+Shift+C (Windows, Linux, Chrome OS).
- When you want to see logged messages or run JavaScript, press Command+Option+J(Mac) or Control+Shift+J (Windows, Linux, Chrome OS) tojump straight into the Console panel.
See Open Chrome DevTools for more details and workflows. Swinsian 1 8 5 – music manager and player.
Get started
If you're a more experienced web developer, here are the recommended starting points for learning howDevTools can improve your productivity:
Discover DevTools
The DevTools UI can be a little overwhelming.. there are so many tabs! But, if you take sometime to get familiar with each tab to understand what's possible, you may discover that DevToolscan seriously boost your productivity.
Note: In the DevTools docs, the top-level tabs are called panels.Device Mode
Simulate mobile devices.
Elements panel
View and change the DOM and CSS.
Console panel
View messages and run JavaScript from the Console.
Sources panel
Debug JavaScript, persist changes made in DevTools across page reloads,save and run snippets of JavaScript, and save changes that you make in DevTools to disk.
Network panel
View and debug network activity.
Performance panel
Note: In Chrome 58 the Timeline panel was renamed to the Performance panel.Find ways to improve load and runtime performance.
Memory panel
Note: In Chrome 58 the Profiles panel was renamed to the Memory panel.Profile memory usage and track down leaks.
Framerx Tutorials
Application panel
Inspect all resources that are loaded, including IndexedDB or Web SQL databases, local andsession storage, cookies, Application Cache, images, fonts, and stylesheets.
Security panel
Debug mixed content issues, certificate problems, and more.
Community
File bug reports and feature requests in Crbug, which is the engineering team's bug tracker.
If you want to alert us to a bug or feature request but don't have much time,you're welcome to send a tweet to @ChromeDevTools. We reply and sendannouncements from the account regularly.
For help with using DevTools, Stack Overflow is the best channel.
To file bugs or feature requests on the DevTools docs, open a GitHub issueon the Web Fundamentals repository.
DevTools also has a Slack channel, but the team doesn't monitor itconsistently.
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