多项选择题

Given the exhibit below. You are a network manager of your company. You are reading your Syslog serverreports. On the basis of the Syslog message shown， which two descriptions are correct？（）

A.This is a normal system-generated information message and does not require further investigation.
B.Service timestamps have been globally enabled.
C.This message is unimportant and can be ignored.
D.This message is a level 5 notification message.

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单项选择题

If a switch is working in the fail-open mode， what will happen when the switch’s CAM table fills to capacityand a new frame arrives？（）

A.A copy of the frame is forwarded out all switch ports other than the port the frame was received on.
B.The frame is transmitted on the native VLAN.
C.The switch sends a NACK segment to the frame’s source MAC address.
D.The frame is dropped.

单项选择题

Which description is true about the show login command output displayed in the exhibit？（）

A.Three or more login requests have failed within the last 100 seconds.
B.When the router goes into quiet mode， any host is permitted to access the router via Telnet，actual SSH， and HTTP， since the quiet-mode access list has not been configured.
C.The login block-for command is configured to block login hosts for 93 seconds.
D.All logins from any sources are blocked for another 193 seconds.

多项选择题

Based on the following items， which two types of interfaces are found on all network-based IPS sensors？（）

A.Loopback interface
B.Command and control interface
C.Monitoring interface
D.Management interface