單項選擇題Which name describes an IPV6 host-enable tunneling technique that uses IPV4 UDP,does not require dedicated gateway tunnels,and can pass through existing IPV4 NAT gateways?()

A. dual stack
B. dynamic
C. Teredo
D. Manual 6to4


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1.單項選擇題Which Cisco IOS diagnostics command can disrupt the operation of a router under high-load conditions?()

A. show running-config
B. show processes cpu
C. debug all
D. logging host ip address

2.單項選擇題Which command encrypts all plaintext passwords?()

A. Router(config)#password-encryption
B. Router(config)#service password-encryption
C. Router#service password-encryption
D. Router# password-encryption

3.單項選擇題Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?()

A. IETF
B. HDLC
C. Q9333-A Annex A
D. ANSI Annex D

4.單項選擇題What is the default administrative distance of OSPF?()

A. 120
B. 100
C. 90
D. 110

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An employee of ABC company has move to an office on a different floor. Although the administrator is able to telnet to all of the routers,the address of Switch F is needed in order to verify that the employee remains in the same VLAN.Which action could be used by the administrator to find the IP address of Switch F?()

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Which IPsec security protocol should be used when confidentiality is required?()

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Which cisco ios command can help to determine the timing of various debug events,relative to each other,when you are debugging a complicated router issue?()

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A router receives information about network 192.168.10.0/24 from multiple sources.What will the router consider the most reliable information about the path to that network?()

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Which statement describes the rule of split horizon?()

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On which options are standard access list based?()

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An administrator must assign static IP addresses to the servers in a network.For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP propertied box for the sales server?()

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At which layer of the OSI model is RSTP used to prevent loops?()

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Which statement is true, as relates to classful or classless routing?()

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Which command encrypts all plaintext passwords?()

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