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Which of the following connectivity devices typically work at the Physical layer of the OSI model?

Which of the following connectivity devices typically work at the Physical layer of the OSI model? Correct Answer Repeater

OSI Model এ মোট 7 টি লেয়ার থাকে। যথাঃ Physical Layer - Cable, Hub, Repeater, Modem কাজ করে এই লেয়ারে। Data Link Layer - Swich, Bridge কাজ করে এই লেয়ারে। Network Layer - Router কাজ করে এই লেয়ারে। Transport Layer - Firewall কাজ করে এই লেয়ারে। Session Layer - Gateway কাজ করে এই লেয়ারে। Presentation Layer. Application Layer. Application এবং Presentation Layer এ সচরাচর আলাদা কোন ডিভাইস কাজ করে না।

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