1) Bit-level transmission (or reception) is at the __? 2) Buffering at the router is needed when ___? 3) How many interfaces can a host have ____? 4) How many interfaces can a router have ____? 5) In IP addressing, the subnet part is __? 6) In IP addressing, the host part is ___? 7) Devices in a subnet can physically reach each other without intervening __? Solution 1 , Physical Layer 2. Uncontrollable Trafic like vedio streaming 3. One. 4. Multiple. 5. In IP addressing, the network part is high order bits. 6. In IP addressing, the host partt is low order bits. Devices in a subnet can physically reach each other without intervening router. .