H31-421-ENU 試験問題を無料オンラインアクセス

LTE duplexing can use FDD and TDD, what is the advantage of TDD? (Multiple choice)

• A.Channel estimation is simpler and power control is more accurate
• B.Support asymmetric spectrum
• C.Doppler's effect is small, good mobility support
• D.For asymmetric business resource, utilization is high

eNodeB alarms and events have "recovery" and "active" two states.

• A.False
• B.True

Which of the following parameters need to be negotiated with the core network MME configuration (multiple choice)

• A.Tracking area code
• B.Preamble code
• C.Mobile country code
• D.mobile network code

Which network element is subscribed to by the dedicated bearer QoS information?

• A.PGW
• B.HSS
• C.PCRF
• D.MME

In one radio frame, how many times does the PSS ( Primary Synchronization Signal ) be transmitted?

• A.1
• B.3
• C.4
• D.2