OSI मॉडल की किस परत में HTTP, FTP, TELNET और SMTP जैसे प्रोटोकॉल का उपयोग किया जाता है?

Which layer of the OSI model is responsible for establishing, managing, authenticating, and terminating sessions between applications?

Which of the following layers of the OSI reference model are classified as host-to-host (upper/end-to-end) layers? (i) Transport layer (ii) Network layer (iii) Session layer (iv) Data link layer Choose the correct option: