Answer
\begin{array}{l}{\text { Collisions can occur in a ring topology because all nodes share the ring }} \\ {\text { and a node may want to send a message at the same time that a message }} \\ {\text { from another node is passing by. In a star topology, collisions are avoided }} \\ {\text { because each node has a direct line (via the hub node) to any other node. }}\end{array}
Work Step by Step
\begin{array}{l}{\text { Collisions can occur in a ring topology because all nodes share the ring }} \\ {\text { and a node may want to send a message at the same time that a message }} \\ {\text { from another node is passing by. In a star topology, collisions are avoided }} \\ {\text { because each node has a direct line (via the hub node) to any other node. }}\end{array}
