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GSM exam part 2 questions & answers 2024/2025
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GSM exam part 2 questions & answers 2024/2025
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GSM exam part 2 questions & answers2024/2025
SIM - ANSWERSprovides personal mobility so that the user can have access to all subscribed services
irrespective of both the location of the terminal and the use of a specific terminal.
BSS - ANSWERSComprised of two parts: The Base Transceiver Station (BTS) The Base Station Controller
(BSC)
The Base Transceiver Station (BTS) - ANSWERShouses the radio transceivers that define a cell and
handles the radio link protocols with the MS.
The Base Station Controller (BSC) - ANSWERSmanages the radio resources for one or more BTSs
NSS - ANSWERSthe main part of which is the Mobile Switching Switching Center (MSC), performs the
switching of calls between the mobile and other fixed or mobile network users.
Home Location Register (HLR) - ANSWERSa database used for storage and management of subscriptions.
Mobile Services Switching Center (MSC) - ANSWERSThe central central component of the Network
Network Subsystem.
Visitor Location Register (VLR) - ANSWERSa database that contains temporary information about
subscribers that is needed by the MSC in order to service visiting subscribers
Authentication Center (AUC) - ANSWERSa protected database that stores a copy of the secret key stored
in each subscriber's subscriber's SIM card
Equipment Identity Register (EIR) - ANSWERSa database that contains a list of all valid mobile equipment
on the network.
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