Exam 300-070 Question id=3800 Configure an IOS Gateway

Refer to the exhibit.
PRI Channel Statistics: ISDN Se2/0/0:23, Channel [1-24] Configured Isdn Interface (dsl) 0 Channel State(0=Idle l=Proposed 2=Busy 3=Reserved 4=Restart 5=Maint_Pend) Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 Service State (0=Inservice 1=Maint 2=Outofservice 8=MaintPend 9=OOSPend) Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
An engineer is troubleshooting an issue with an ISDN Primary Rate Interface. Which command produces this output?

A. cisco#show isdn service
B. cisco#show isdn active
C. cisco#show isdn status
D. cisco#show isdn history

WARNING

the answers are mixed, do not specify in the comment number or the letter of the answer
please write answer#A instead A, answer#B instead B...
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