Mobile computing refers to the use of portable devices, such as smartphones, tablets, and laptops, to access and process data wirelessly while on the move. It enables users to stay connected, work, and access information from anywhere through technologies like Wi-Fi, cellular networks, and Bluetooth. Mobile computing integrates hardware, software, and communication technologies to provide seamless connectivity, real-time data exchange, and applications like mobile banking, navigation, and cloud services. It has revolutionized how people interact with technology, making it more accessible and convenient.
23 questions and answers
What are the differences between destination sequence distance vector and the standard distance vector routing algorithms? What are the frequency bands of operation for CDMA?
Difference between destination sequence vector and standard distance vector routing:
Why does CSMA/CD not work for medium access control of WLAN? What is the alternative mechanism of CSMA/CD? Write steps of operation to implement such an alternative mechanism.
The basic idea behind CSMA/CD is that a station needs to be able to receive while transmitting to detect collision. When there is a collision the station receives two signal: its own signal and the signal transmitted by a second station.
What is meant by access control? What are the contention-based and contention free access control mechanisms?
When two or more stations are connected with each other using the same link(multipoint or broadcast link), there is a need of multiple access protocol to coordinate access to the link, which decides when and which station should be access the link.
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