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Which command displays the band width?

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Which command displays the band width?

(a) rostopic hz

(b) rostopic delay

(c) rostopic echo

(d) rostopic bw

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Origin of the question is Publishing Messages with Commands topic in portion Working with the Cloud of IOT

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Right answer is (d) rostopic bw

Explanation: Rostopic bw displays the bandwidth. The bandwidth reported is the received bandwidth. If there are network connectivity issues or rostopic cannot keep up with the publisher.

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