Synchronous e learning and Asynchronous e learning

 E-learning can be defined as instructional content or learning experiences delivered by electronic technology and is a structured, interactive approach to educating and informing the students, employees etc. E learning is also called Online learning/education, Technology-based, Computer-based or Web-based learning/training, Virtual learning, Distributed learning etc. It is defined as instructional content or learning experiences delivered or enabled by electronic technology.

Synchronous e learning: 

Students and instructor are logged on at the same time and communicate directly and virtually with each other, where all the students must be in the classroom at a certain time for the class to start. This usually takes place via internet, website, audio or video conferencing by students in a classroom. Occurs in real time, learners log into the system at set time and communicate. Involves the exchange of ideas and information directly with the instructor with one or more participants during the same period.

Asynchronous e learning: 

Courseware is served from a web server and delivered on demand to the learners' workstation. It is normally available to learners 24 hours per day, 7 days per week. It is a key component of flexible E-learning. A sender and receiver do not need to synchronize before each transmission, a sender can wait arbitrarily long between transmissions and the receiver must be ready to receive data when it arrives. Beneficial for students having health problems. To complete work in low stress environment and within more time frame.

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