Question

____is a technique in which a dedicated and complete physical connection is established between two nodes for communication.
(A) Packet switching
(B) Circuit switching
(C) LAN
(D) All the above

Answer 1

its circuit switching

B

Answer 2

Circuit switching is a technique in which a 'dedicated and 'complete physical connection' is 'established between 'two nodes for communication'.  

Answer: Option (B)

Explanation:  

In this mode of communication, two nodes create and establish a dedicated channel of communication, or more commonly known as a circuit, in the 'network' prior to the start of actual communication. This form of switching is not used popularly as it leads to wastage of resources, where dedicated circuits are built for specific calls and in comparison, packet switching enables various and different calls. Internet works on the principle of packet switching.