35.

36.

87.

38.

39.

Which frame is used in IEEE 802.11 standard to determine whether the station knows the
secret key of the authentication scheme being used?

(^) Challenge frame (B) Super frames
(C) Beacon frames (D) None of the above

How many channels do Bluetooth radio layer consists of?
(A) 89 channels (B) 79 channels
(C) 99 channels (D) None of the above

Which of the following statements is/ are correct about Bluetooth technology?

@ Bluetooth network configuration called a piconet, consists of a master device and up to
7 slave devices.

Gi) Only the master can start to transmit in even-numbered slots and slave can start to
transmit in an odd-numbered slots.

(ii) A slave device can be parked; All parked slaves have a 16-bit Parked Member Address
(PMA).

(iv) Bluetooth operates in an unlicensed radio band at 2.45 GHz in a Time Division
Multiplexing manner.

(ಯ) Only (ii) and (iii)

(B) Only @ and (iv)

(C) All of the above (i), (ii), (iii) and (iv)
(D) Only (i) and (iii)

The Global Positioning system (24 GPS) is an example for which orbit satellite?
(^) Geostationary satellite (8) Low-Earth Orbit satellite
(C) Medium-Earth Orbit satellite (D) None of the above

In multimode stepped index fiber, the dispersion can be reduced by using :
(A) Acore material that has a constant refractive index
(B) Acore material that has a variable refractive index
(0) Acladding material that has a constant refractive index

(0) Acladding material that has a variable refractive index

232/2023 8 A