フリー問題

問題文

Which of the following arriving packets is exception traffic on a Junos device?

選択肢

1. A packet whose destination is a subnet behind another interface of the device.
2. A packet dropped by a filter on the incoming interface.
3. A packet that matches a route in the forwarding table and leaves the device through the interface indicated by that entry without any additional processing being required anywhere in the system.
4. A routing protocol update addressed to the device itself, which must be delivered to the Routing Engine for processing.