单项选择题

Which of the following network protocols is used to ensure consistent time across network devices on the domain?（）

A.NTP
B.FTP
C.RTP
D.IGMP

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单项选择题

Which of the following security mitigation techniques is the MOST effective against zero-day attacks?（）

A.Update antivirus definitions
B.MAC filtering
C.Effective security policies
D.User awareness training

单项选择题

A user reports that the wireless network is slow and is able to see and access shared folders that are
unknown to the user.
Which of the following is the cause of the problem?（）

A.The SSID broadcast is disabled.
B.Wireless router is improperly configured.
C.The user is connecting to the wrong SSID
D.The wireless NIC is defective.

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A second network card in a server that activates if the primary card fails is an example of which of the following network performance optimization?（）

A.Load balancing
B.QoS
C.High availability
D.Fault tolerance