एक कंप्यूटर और कीबोर्ड के बीच होने वाले संचार में किस प्रकार का ट्रांसमिशन मोड शामिल होता है?

Which switching technique establishes a dedicated end-to-end physical communication path between the source and destination before data transmission begins?

In computer networks, combining multiple signals into a single signal for transmission over a shared physical medium is called _______.