25) IBM's Token-Ring network uses

26) In which circuit switching, delivery of data is delayed because data must be stored and retrieved from RAM

27) If a network designer wants to connect 5 routers as point-to-point simplex line, then total number of lines required would be

28) To interface a computer terminal with a modem, required physical layer standard is

29) A 100 km long cable runs at the T1 data rate. The propagation speed in the cable is half the speed of light. How many bits is in the cable