A __________ usually stores all the user-related data and info, and it is also relevant to the GSM mobile systems.
A. SIM
B. CMR
C. HMR
D. VLR
Answer:A
A __________ usually stores all the user-related data and info, and it is also relevant to the GSM mobile systems.
A. SIM B. CMR C. HMR D. VLR