The packets switching concept was first proposed
A.
in the late1980s for the Defense Ministry of US.
B.
in the early 1960s for military communication systems, mainly to handle speech
C.
in the late 1950s for Defense Ministry of US
D.
All of theabove
E.
None of the above
A.
in the late1980s for the Defense Ministry of US.
B.
in the early 1960s for military communication systems, mainly to handle speech
C.
in the late 1950s for Defense Ministry of US
D.
All of theabove
E.
None of the above