单项选择题
Which version of NTP was the first to support cryptographic authentication?（）
A.Version 1
B.Version 5
C.Version 4
D.Version 3
相关考题
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单项选择题
How does NTP help you troubleshoot network problems?（）
A. By calculating the time offset from the GPS or atomic clock
B. By setting the router clock to the default value if the router can't connect to a time server
C. By setting all network devices to the correct time
D. By setting necessary time date in the timestamp information -
单项选择题
Which of the following can we draw from the given information concerning the class-map "all-traffic"?（）
A. The class-map "all-traffic" will match all traffic with ip precedence 4 and 5
B. The class-map "all-traffic" will match all traffic with dscp 18 or dscp 43
C. The class-map "all-traffic" will match all traffic with ip precedence 0 or 1
D. The class-map "all-traffic" will match all traffic with dscp 18 and dscp 43 -
单项选择题
Which one of these class maps was configured to match traffic for CS5?（）
A. CIS 1# show class-map forward Class map match-all forward ( id 3) Match ip dscp 18
B. CIS1#show access-map block Class map match-all block (id 4) Match ip dscp 43
C. CIS1# show class-map real-time Class map match-all block (id 5) Match ip dscp 16
D. CIS 1# show class-map pass Class map match-all real-time (id 2) Match ip dscp 40
