Networks Analysis and Synthesis - Engineering

Q1:

A network is said to be two port network if there is
  1. no independent source in the network
  2. no dependent source in the network
  3. non-linear component in the circuit
  4. no external connection exist between I/P and 0/P

A 1, 2, 3

B 3, 4, 2

C 1, 3, 4

D 4, 3, 1, 2

ANS:C - 1, 3, 4

No answer description is available.