In the MAC operation of WiFi, the collision avoidance is used in which function

What is the Extended Service Set ID (“ESS ID”) ?

For Audio or Video applications, the network delay may affect the quality of service. Which MAC scheme might be able to give these applications high priority in accessing medium? 

  Actual/Measured Predicted % of Predicted FVC 2.50 3.00 83 % FEV 1.0 2.25 2.95 76 % FEV 1% 90 % 98 %   Diagnose the patient based on the above PFT results.

  Trial 1 Trial 2 Trial 3 FVC 4.6 L 4.4 L 4.6 L FEV1 4.2 L 4.1 L 4.1 L FEV1 % 91% 93% 90% Which trial would you consider the “Best Test”?

Which of the following are considered specific purposes of a PFT? I.    To quantify changes in the degree of pulmonary function and impairment II.    Epidemiological surveillance for pulmonary risk III.   Assessment of preoperative pulmonary risk IV.   To aid in the determination of pulmonary disability V.    To evaluate and quantify therapeutic effectiveness

A Respiratory Therapist is performing spirometry on a patient. How close to each other do the test results for a forced vital capacity and forced expiratory volume in 1 second need to be in order for them to be considered accurate?

The FEV 1 is the best PFT result used to differentiate between restrictive and obstructive lung disease?

What is the functional significance of the axon hillock?

ATIM (Announcement Traffic Indication Message) frame introduced in IEEE 802.11 is what type of frame