問題文
A managed device is brought up before it has been given any way to learn the current time, and it starts sending records to a collector. What does the record format require of it?
選択肢
- It has to put the time it counted since it started in the time field, since a device that is unable to obtain the system time is required to fill the field from its own counter rather than leave it
- It has to put the empty marker in the time field, since a device that is unable to obtain the system time is required to leave the field marked as absent rather than fill it
- It has to copy the time from the collector into the time field, since a device that is unable to obtain the system time is required to take the value from the receiving side rather than omit it
- It has to hold the records until the time becomes known, since a device that is unable to obtain the system time is required to keep them in store rather than send them