<｜begin▁of▁sentence｜>### Instruction:
In the realm of secure communications, imagine we're tasked with devising a new protocol that hinges on the structural integrity of a network's graph. This network graph comprises four nodes aligned in a linear sequence, akin to stations in a relay, with each node directly connected to its immediate neighbor, creating a path-like formation. The crux of the issue we're facing is to ascertain whether this network's architecture is robustly connected, ensuring no node is isolated and secure message transmission can occur unimpeded across the entire network. This verification process is critical for the cryptographic strength of our protocol. We intend to leverage NetworkX's is_connected function to rigorously evaluate this graph's connectivity. How can we confirm that every node in this undirected graph is interlinked by a path, maintaining the cipher's structural integrity and operational efficacy?
### Response:
import networkx as nx

# Create a graph
G = nx.path_graph(4)

# Check if the graph is connected
print(nx.is_connected(G))
# Output: True
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