Air Interface Protocols

18 Questions

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Air Interface Protocols

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Questions and Answers
  • 1. 
    RLC (Radio Link Control) Services in the control plane are called. (none of the above: state answer)
    • A. 

      Control plane radio bearer

    • B. 

      User plane radio bearer

    • C. 

      Signaling radio bearer

    • D. 

      All of the above

    • E. 

      None of the above

  • 2. 
    This is characterized by how and with what characteristics data are transferred
    • A. 

      Physical channel

    • B. 

      Transport channel

    • C. 

      Logical channel

    • D. 

      Service access points

  • 3. 
    This multiplexing makes it possible to multiplex any type of service, including services with different QoS parameters
    • A. 

      Physical layer multiplexing

    • B. 

      MAC multiplexing

    • C. 

      RLC multiplexing

    • D. 

      RRC multiplexing

  • 4. 
    These are included in the MAC header
    • A. 

      C-RNTI and M-RNTI

    • B. 

      C-RNTI and U-RNTI

    • C. 

      C-RNTI and P-RNTI

    • D. 

      P-RNTI and U-RNTI

    • E. 

      P-RNTI and M-RNTI

    • F. 

      U-RNTI and M-RNTI

  • 5. 
    Carries voice or packet data between MT and the far end of the core network
    • A. 

      Radio access bearer

    • B. 

      CN bearer

    • C. 

      UMTS bearer

    • D. 

      Radio bearer

  • 6. 
    Priority handling between UE is done by (none of the above: state answer)
    • A. 

      Selecting between high and low bit rate

    • B. 

      Mapping logical channel to transport channel

    • C. 

      Static scheduling

    • D. 

      All of the above

    • E. 

      None of the above

  • 7. 
    The main function of PDCP is _______________.
  • 8. 
    Service multiplexing cannot be done in the physical layer
    • A. 

      True

    • B. 

      False

  • 9. 
    RLC provides radio bearers when both PDCP and BMC are used
    • A. 

      True

    • B. 

      False

  • 10. 
    Which of the following are not functions of RLC
    • A. 

      Flow control

    • B. 

      Protocol error detection

    • C. 

      Multiplexing

    • D. 

      Suspend function for data transfer

    • E. 

      Masking of user data

  • 11. 
    _________ and __________ protocols exists only in the user plane.
  • 12. 
    Mobility of user equipment in the connected mode is controlled by
    • A. 

      Mac signaling

    • B. 

      Pdcp signaling

    • C. 

      Bmc signaling

    • D. 

      Rlc signaling

    • E. 

      Rrc signaling

  • 13. 
    used to forward low priority non-access stratum messages
    • A. 

      RB 0

    • B. 

      RB 1

    • C. 

      RB 2

    • D. 

      RB 3

    • E. 

      RB 4

  • 14. 
    QoS used by the Access Stratum is
    • A. 

      Specified by the mobile station

    • B. 

      Specified by the network

    • C. 

      Specified by the non access stratum

    • D. 

      Specified by the access stratum

    • E. 

      Negotiated by the mobile station and network

    • F. 

      Negotiated by the non access stratum and access stratum

  • 15. 
    This function allows the RLC receiver to control the rate at which the peer RLC transmitting entity may send information
    • A. 

      Suspend/resume function

    • B. 

      Flow control

    • C. 

      Function of the RLC layer

    • D. 

      Traffic volume monitoring

    • E. 

      Priority handling between UE data flow

    • F. 

      Function of the MAC layer

  • 16. 
    Selecting of high bit rate and low bit rate transport format for different data flow
    • A. 

      Suspend/resume function

    • B. 

      Flow control

    • C. 

      Function of the RLC layer

    • D. 

      Traffic volume monitoring

    • E. 

      Priority handling between UE data flow

    • F. 

      Function of the MAC layer

  • 17. 
    Local operation commanded by RRC which is needed during the security mode control procedure so that the same ciphering keys are always used by the peer entities
    • A. 

      Resumption

    • B. 

      Retransmission

    • C. 

      Suspension

    • D. 

      Segmentation

  • 18. 
    The only service that uses BMC
    • A. 

      SMS CB

    • B. 

      CN CB

    • C. 

      UE CB

    • D. 

      BTS CB