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單項選擇題

Which action does the ping 172.18.1.1 size 5 command perform?（）

A. It sends only five ping requests to the 172.18.1.1 destination.
B. It sends a continuous ping with a packet length of five bytes to the 172.18.1.1 destination.
C. It sends five rapid ping requests to the 172.18.1.1 destination.
D. It sends a continuous rapid ping with a packet length of five bytes to the 172.18.1.1 destination.

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單項選擇題

Which command gracefully shuts down the Junos OS?（）

A. request system reboot
B. request system logout
C. request system halt
D. restart gracefully

單項選擇題

To which directory does the Junos OS write traceoptions files?（）

A. /var/tmp/
B. /var/
C. /var/log/
D. /var/home/<username>/