Computer Networking
The core diameter of a single-mode fibers is about

None of these
3 times the wavelength of the light carried in the fiber
7 times the light carried in the fiber
10 times the fiber radius
10 times the wavelength of the light carried in the fiber

ANSWER DOWNLOAD EXAMIANS APP

Computer Networking
HDLC (High-level Data Link Control) is

network access standard for connecting stations to a circuit-switched network
a method of determining which device has access to the transmission medium at any time
a very common bit-oriented data link protocol issued by ISO.
None of these
a method access control technique for multiple-access transmission media

ANSWER DOWNLOAD EXAMIANS APP