問題文
The table of addresses on a bridging device is kept current by ageing, and learning into it is on from the moment a segment is configured. What does the device do to the stamp it holds against an address, and at what scopes may learning be switched off?
選択肢
- It leaves the stamp as first written however much traffic comes from that address, and a timer of its own looks the stamps over now and then and takes out any older than the value set, and learning may be switched off for the whole of the device alone, with no narrower scope offered at all
- It sets the stamp anew every single time it catches traffic from that address, and a timer of its own looks the stamps over now and then and takes out any address older than the value set, and learning may be switched off for the whole device, for one segment, or for one logical interface
- It sets the stamp anew every single time it catches traffic from that address, and a timer of its own looks the stamps over now and then and takes out any address older than the value set, and learning may be switched off for the whole of the device alone, with no narrower scope offered at all
- It leaves the stamp as first written however much traffic comes from that address, and a timer of its own looks the stamps over now and then and takes out any older than the value set, and learning may be switched off for the whole device, for one segment, or for one logical interface