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單項選擇題 While troubleshooting a serial line problem, you enable ppp authentication debugging as shown below:

Based on the command output above, what type of 'handshake' was used for PPP authentication?（）

A. one-way
B. two-way
C. three-way
D. four-way
E. no handshakes required during authentication
F. None of the above

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1.單項選擇題After attempting to telnet into a router, you are denied and you receive the error message "password required, but none set." What configuration changes will allow telnet access into this router?（）

A.
B.
C.
D.

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2.單項選擇題Which wild card mask will enable a network administrator to permit access to the Internet for only hosts that are assigned an address in the range 192.168.8.0 through 192.168.15.255?（）

A. 0.0.0.0
B. 0.0.0.255
C. 0.0.255.255
D. 0.0.7.255
E. 0.0.3.255
F. None of the above

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3.單項選擇題You are an administrator of a network that uses PPP for CHAP authentication over ever WAN link. What command would you enter to display the CHAP authentication as it occurs in real time?（）

A. show ppp authentication
B. debug PAP authentication
C. debug PPP authentication
D. show interface serial0
E. show CHAP authentication

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4.單項選擇題You are a technician at TestKing. Your assistant applied an IP access control list to Router TK1. You want to check the placement and direction of the access control list.Which command should you use?（）

A. show access-list
B. show ip access-list
C. show ip interface
D. show interface
E. show interface list

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5.單項選擇題 The relevant portion of the Barrymore router configuration is displayed below:
In your effort to conserve precious bandwidth, you set up some ACL's to deny internet access to the remote server located at 192.168.20.5. A few minutes after reconfiguring (as shown in the exhibit above) you notice that some web traffic is still going through.Based on the above output, what do you suspect as to why the traffic still traveling over the ISDN link?（）

A. Broadcasts are creating "interesting" traffic.
B. The access-list is not configured correctly.
C. The command ip access-group 129 out is missing from the bri0/0 interface.
D. The dialer-group has not been applied to outbound traffic.

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