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多項選擇題哪兩個值被生成樹協(xié)議用來選舉根橋？（）

A.amount of RAM
B.bridge priority
C.IOS version
D.IP address
E.MAC address
F.speed of thelinks

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1.單項選擇題Which of these represents an IPv6 link-local address?（）

A.FE08::280e:611:a:f14f:3d69
B.FE81::280f:512b:e14f:3d69
C.FE80::380e:611a:e14f:3d69
D.FEFE:0345:5f1b::e14d:3d69

2.多項選擇題 Your boss is learning a CCNA training course，refer to the exhibit.The access list has been configured on the S0/0 interface of router RTB in the out bound direction.Which two packets，if routed to the interface，will be denied？（）

access-list 101 denytcp192.168.15.320.0.0.15any eq telnet
access-list 101 permit ip any any

A.source ip address：192.168.15.5destination port：21
B.source ip address：，192.168.15.37destination port：21
C.sourcei p address：，192.168.15.41destination port：21
D.source ip address：，192.168.15.36destination port：23
E.source ip address：192.168.15.46destination port：23
F.source ip address：，192.168.15.49destination port：23

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3.多項選擇題Which two statements about static NAT translations are true?（）

A.They are always present in the NAT table.
B.They allow connection to be initiated from the outside.
C.They can be configured with access lists,to allow two or more connections to be initiated from the outside.
D.They require no inside or outside interface markings because addresses are statically defined.

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4.單項選擇題Which single access list statement will combine all four of these statements into a single statement that will have exactly the same effect（）。

A.access-list 10 permit 172.29.16.0 0.0.0.255
B.access-list 10 permit 172.29.16.0 0.0.1.255
C.access-list 10 permit 172.29.16.0 0.0.3.255
D.access-list 10 permit 172.29.16.0 0.0.15.255
E.access-list 10 permit 172.29.0.0 0.0.255.255

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5.單項選擇題All WAN links inside the ABC University network use PPP with CHAP for authentication security. Which command will display the CHAP authentication process as it occur between two routers in the network?（）

A.show chap authentication
B.show interface serial0
C.debug ppp authentication
D.debug chap authentication
E.show ppp authentication chap

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