Computer Networking
Which of the followings is used in communications is referred to as unshielded twisted-pair (UTP)?

Coaxial cable
None of these
Twisted-pair cable
Fiber-optic cable

ANSWER DOWNLOAD EXAMIANS APP

Computer Networking
A WATS arrangement

is always less expensive than flat-rate service
is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
is never less expensive than flat-rate service
None of these

ANSWER DOWNLOAD EXAMIANS APP