The mobile wireless technologies are differentiated by … except ( ).
A. Control of the transmitted power
B. Network topology and frequency reuse
Coding algorithms
D. Wire resource management
查看答案
Which one isn’t the network element in a typical cellular telecommunication network?
A. PSTN
BS
C. HLC
D. VCR
These services on the below are what MSC provide except ( ).
A. Switches voice traffic from the PSTN to the PSTN if the call is a landline -to-landline call
B. Switches voice traffic from the wireless network to the PSTN if the call is a mobile-to-landline call.
C. Switches to another MSC within the wireless network if the call is a mobile-to-mobile call.
D. Provides telephony switching services and controls calls between telephone and data systems.
These descriptions is all about BS, which one is correct ( )?
A. BS is the component of the wire network access infrastructure.
BS terminates the air interface over which the subscriber traffic is transmitted to and from a mobile station.
C. BS is called a Base Transceiver Station.
D. A, B and C
Which one is incorrect about HLR ( )?
A. The HLR is a database that contains information about subscribers to a mobile network.
B. the HLR might contain the service profiles of visiting subscribers.
C. The HLR uses the subscriber information supplied by the itself to authenticate and register the subscriber.
D. The HLR stores “permanent” subscriber information, including the service profile, location information, etc.
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