Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Computer Science a. Explain with illustrations the hidden terminal and the exposed terminal problems in wireless networks, using four nodes A, B, C, and D. b. How can RTS/CTS help with removal of hidden terminal problem and exposed terminal problems? c. Does RTS/CTS message ensure that data frames from different nodes never collide? d. Suppose that the wireless links are vey noisy and different nodes communicate with each other via TCP segments, so that TCP segments may be lost/dropped due to bit errors. Discuss whether TCP could be a good protocol used in this scenario. To ensure mobility in wireless IP networks the Mobile IP scheme uses the concepts of Home Agent and Foreign Agent. Explain briefly with illustration how this works. By virtue of the redirections, the connection process is slow. Suggest a mechanism to improve this.
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