Nodes and Topics

Check the box next to all of the True statements

Robots may be very different in form and function, but they all perform the same high-level tasks of perception, decision making, and actuation.

Nodes on a robotic system all communicate through the ROSmaster.

The parameter server acts as a central repository where nodes on a system can look up parameter values as needed.

Nodes pass messages to one another via topics, which you can think of as a named bus connecting two nodes.

A "pub-sub" architecture is one in which the ROSmaster publishes messages on topics and nodes subscribe to receive them.

A single node may simultaneously publish and subscribe to many topics.

SOLUTION:

Robots may be very different in form and function, but they all perform the same high-level tasks of perception, decision making, and actuation.
The parameter server acts as a central repository where nodes on a system can look up parameter values as needed.
Nodes pass messages to one another via topics, which you can think of as a named bus connecting two nodes.
A single node may simultaneously publish and subscribe to many topics.