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Following questions relate to cellular communications. (3+3 = 6 marks) A. What is the role of control channels? B. Some cellular operators do not

Following questions relate to cellular communications. (3+3 = 6 marks) A. What is the role of control channels? B. Some cellular operators do not issue SIM cards. How does the network operator identify that a device belongs to a particular user? In the answer box below, write the letter and your answer.

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