1 Which options are properties of contention-based media access for a shared media? (Choose three.) **non-deterministic **less overhead one station transmits at a time **collisions exist devices must wait their turn token passing 2 What is a primary purpose of encapsulating packets into frames? provide routes across the internetwork format the data for presentation to the user **facilitate the entry and exit of data on media identify the services to which transported data is associated 3 Refer to the exhibit. How many unique CRC calculations will take place as traffic routes from the PC to the laptop? 1 2 4 **8 16 4 What is true concerning physical and logical topologies? The logical topology is always the same as the physical topology. Physical topologies are concerned with how a network transfers frames. Physical signal paths are defined by Data Link layer protocols. **Logical topologies consist of virtual connections between nodes. 5 Refer to the exhibit. Assuming that the network i