The world's public switched telephone networks, both wireline and mobile, communicate with each other by means of a signaling protocol known as __________________.
A. private branch exchange (PBX)
B. Signaling System 7
C. public switched telephone network (PSTN)
D. public data network (PDN)
Question 2
A ______________ terminated in an open has a reflected voltage wave that is always of the same polarity and amplitude as the incident voltage wave.
A. transmission line
B. magnetic field
C. wavelength
D. circuit
Deserts differ across the world. (a) Acacia trees between a gravel plain and sand dunes in the Namib
Smallest Snake in the world
THE WORLD'S BIGGEST SALE
The World’s Muddiest River
World War 2 timeline
Lastlings - Perfect World (Official Music Video)