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?
A.
service timestamps log datetime msec
B.
clock calendar-valid
C.
show clock detail
D.
service timestamps debug datetime msec
A.
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Correct Option is : D.
service timestamps debug datetime msec
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#service timestamps debug datetime msec
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What is the correct correct answer for this question? Look like answer D is correct. Please confirm!
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– To configure the system to apply a time stamp to debugging messages or system logging messages, use the service timestamps command in global configuration mode. To disable this service, use the no form of this command.
service timestamps [debug | log] [uptime | datetime [msec]] [localtime] [show-timezone] [year]
no service timestamps [debug | log]
Where,
debug (Optional) Indicates time-stamping for debugging messages.
log (Optional) Indicates time-stamping for system logging messages.
– It is generally advisable to configure millisecond timestamps as this provides high level of clarity when looking at debug outputs. Millisecond timestamps provide a better indication of the timing of the various debugs events relative to each other.
References:
http://www.cisco.com/en/US/docs/ios/fundamentals/command/reference/cf_r1.html#wp1030116
http://www.cisco.com/en/US/tech/tk801/tk379/technologies_tech_note09186a008017874c.shtml
which means the right answer here is D “service timestamps debug datetime msec”
hope that help
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