Part of the routing table of router PG1 is displayed below:

From analyzing the above command output,what is the administrative distance of the external EIGRP routes（）

A.The neighboring router stops receiving ACK packets from this router.
B.The neighboring router starts receiving route updates from this router.
C.The neighboring router is too busy to answer the query(generally caused by high CPU utilization).
D.The neighboring router is having memory problems and cannot allocate the memory to process the query or build the reply packet.

A.Lay er 5
B.Lay er 4
C.Lay er 3
D.Lay er 2
E.Lay er 1

A.The Aironet Desktop Utility （ADU ）profile manager feature can create and manage only one profile for the wireless client adapter.
B.The Aironet Desktop Utility (ADU) can support only one wireless client adapter installed and used at a time.
C.The Aironet Desktop Utility (ADU) can be used to establish the association between the client adapter and the access point , manage authentication to the wireless network , and enable encryption.
D.The Aironet Desktop Utility (ADU) and the Microsoft Wireless Configuration Manager can be used at the same time to configure the wireless client adapter.