Which of the following mediums is circuit switched?
A.
PSTN
B.
ATM
C.
Frame relay
D.
MPLS
Which of the following mediums is circuit switched?
Which of the following mediums is circuit switched?
Which of the following mediums is circuit switched?
Which of the following mediums is circuit switched?
A.
PSTN
B.
ATM
C.
Frame relay
D.
MPLS