單項選擇題Refer to Topic TestKing.com in iPAD document.Which switch is the root bridge for VLAN 1?（）

A.TestKingD
B.TestKing1
C.TestKing2
D.TestKing3


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1.多項選擇題Refer to Topic TestKing.com in iPAD document.Which ports on TestKing3 are operating as trunks?（）

A.Fa0/1
B.Fa0/3
C.Fa0/4
D.Fa0/6
E.Fa0/9
F.Fa0/12

2.單項選擇題Refer to Topic TestKing.com in iPAD document.To which port of TestKing3 is router VLAN-R1 connected?（）

A. Fa 0/1
B. Fa 0/3
C. Fa 0/6
D. Fa 0/8
E. Fa 0/9
F. Fa 0/12

4.單項選擇題Refer to Topic TestKing.com in iPAD document.What happens to the network when TestKingX is reconnected and a trunk exists between the two switches?（）

A. All VLANs except the default VLAN will be removed from all switches.
B. All existing switches will have the students, admin, faculty, Servers, Management,Production, and no-where VLANs.
C. The VLANs Servers, Management, Production, and no-where will replace the VLANs on SwX.
D. The VLANs Servers, Management, Production, and no-where will be removed from existing switches.

5.多項選擇題Which statements are true regarding ISDN channels?（）

A. Each B channel can transmit up to 64 kbps
B. The ISDN B channel carries voice or data
C. The ISDN D channel transmits control information.
D. The D channel transmission rate varies depending on the service used.
E. HDLC or PPP can be used to encapsulate D channel information.