Question

MQTT topics are
a. Simple floating point
b. Simple integer
c. Simple symbol
d. Simple string

Answer 1

MQTT topics are simple symbol.

Answer 2

MQTT topics are Simple symbols.

Answer: Option(c)

Explanation:

MQTT stands for Message Queuing Telemetry Transport. The topic in MQTT has one or more topic levels. The forward slash is used to separate each topic level. A wildcard is used to subscribe to topics. There are two different types of a "single-level wildcard" and "multi-level wildcard".

• The "Single-level wildcard" which is represented by plus symbol replaces one topic level.  
• The "Multi-level wildcard" which is represented by the hash symbol covers multiple topic levels.