What are the
main purposes of low earth orbit?
a) satellite communication
b) surveillance
c) both a & b
d) none of these
Which of the following are examples of low earth orbit?
a) international space station
b) Hubble space telescope
c) space shuttle
d) all of these
Mobile Device Communication
What is the abbreviation of PSTN?
a) public switch telephone network
b) private switch telephone network
c) public socket telephone network
d) private socket telephone network
Requirements of Mobile Communication System
How many major components are in mobile communication system?
a) one
b) two
c) three
d) four
Explanation: Cell Site, Mobile Subscriber Unit, Mobile Station
