Which of the following wireless networks does NOT operate in the ISM band?

In IEEE 802.11 PCF, after the point coordinator issues a poll to the first station, if it receives response from the first station, it will continue to poll the second station after sensing the channel idle for:

a) What is the purpose of frequency hopping (FH) used in the Bluetooth specifications? b) bonus (2 pts): How many channels are available in FH? What’s the bandwidth of each channel? c) What’s the multiple access protocol used in Bluetooth? What’s the duplex mode used in Bluetooth?

Consider two MSCs A and B. Suppose the BSs connected to MSC A are partitioned into two groups A1 and A2, and that the BSs of MSC B are grouped into B1 and B2. Is it reasonable to group A1 and B1 into a location area, and group A2 and B2 into another location area?

Calculate the AR% from the information provided.

Evaluate the integral. ​   given, , , , . ​

Write the limit , as a definite integral on the interval [0, 8] where ci is any point in the ith subinterval. ​

Sketch the region whose area is given by the definite integral and then use a geometric formula to evaluate the integral. ​ ​

Find the x- and y-intercepts of f.f(x) = (x + 5)(x – 4)(x + 4)

Find the slope of the graph of the function  at x = 5. ​