Answer:
1:1
Explanation:
According to my research on different types of relationships between two variables, I can say that based on the information provided within the question the entities PROFESSOR and DEPARTMENT exhibit a 1:1 relationship. In other words there can only be one Professor per Department and vice-versa.
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Answer:THE ANSWER IS A.
Explanation:I DID IT AND I GOT 100
Answer:
True
Explanation:
Solution
ZigBee uses unlicensed frequency bands but operate at slower speed or data rates.
ZigBee: This communication is particular designed for control and sensor networks on IEEE 802.15.4 requirement for wireless personal area networks (WPANs), and it is a outcome from Zigbee alliance.
This communication level defines physical and (MAC) which is refereed to as the Media Access Control layers to manage many devices at low-data rates.