软件认证工程师考试
CCNA系列认证CCNA(640-802)章节练习(2019.05.16)
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单项选择题
How many subnets can be gained by subnetting 172.17.32.0/23 into a /27 mask, and how many usable host addresses will there be per subnet?()
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单项选择题
How does using the service password encryption command on a router provide additional security? ()
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单项选择题
Which commands is necessary to permit SSH or Telnet access to a cisco switch that is otherwise configured for these vty line protocols?()
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单项选择题
Which address is the IPV6 all-RIP-routers muticast group address that is used by RIPng as the destaion address?()
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单项选择题
The administrator is unable to establish connectivity between two Cisco routers. Upon reviewing the command output of both routers, what is the most likely caust of the problem?()
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多项选择题
Which two of these statements are true of IPv6 address representation?()
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多项选择题
At which layers of the OSI model do WANs operate?()
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单项选择题
Which option is a valid IPv6 address?()
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单项选择题
Which parameter can be tuned to affect the selection of a static route as a backup.when a dynamic protocol is also being used?()
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单项选择题
Acknowledgements, sequencing, and flow control are characteristics of which OSI layer?()
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