*Question G8C09:
Which is true of mesh network microwave nodes?*  

*Correct Answer is  B: If one node fails, a packet may still reach its target station via an alternate node*  

### AI Response: (may contain errors)  

To understand the question about mesh network microwave nodes, let's break down the correct answer and the other choices.

### Correct Answer: 
**B: If one node fails, a packet may still reach its target station via an alternate node.**

- **Explanation**: In a mesh network, each node is interconnected with multiple other nodes. This redundancy allows for alternative paths for data packets. If one node fails, the network can reroute the packets through other nodes, ensuring that communication continues without interruption. This is a key advantage of mesh networks, enhancing reliability and robustness.

### Why the Other Choices are Incorrect:

- **A: Having more nodes increases signal strengths**  
  - **Explanation**: While having more nodes can improve coverage and reliability, it does not inherently increase signal strength. Signal strength is primarily determined by the power of the transmitter and the gain of the antennas used. More nodes can help distribute the signal but do not amplify it.

- **C: Links between two nodes in a network may have different frequencies and bandwidths**  
  - **Explanation**: In a typical mesh network, nodes usually operate on the same frequency to maintain compatibility and ensure effective communication. While technically possible to have different frequencies, it complicates the network design and is not a standard practice in mesh networks.

- **D: More nodes reduce overall microwave out of band interference**  
  - **Explanation**: Adding more nodes does not necessarily reduce out-of-band interference. In fact, it can potentially increase interference if the nodes are not properly managed or if they operate on overlapping frequencies. Effective interference management typically involves careful frequency planning rather than simply increasing the number of nodes.

### Summary:
- The correct answer highlights the resilience of mesh networks, allowing for continued communication even if one node fails.
- The other choices either misinterpret the effects of adding nodes or do not align with standard practices in mesh network design.

This understanding is crucial for the Extra Class exam, as it emphasizes the operational principles of mesh networks in amateur radio communications.