Question: Help please Question 21 (5 points) Which OSI layer does each of the following devices operate at? 1. Layer 1 2. Layer 2 3. Layer

Help please Help please Question 21 (5 points) Which OSI layer does each

Question 21 (5 points) Which OSI layer does each of the following devices operate at? 1. Layer 1 2. Layer 2 3. Layer 3 4. Layer 4 5. Layer 5 6. Layer 6 7. Layer 7 Hub Stateful Firewal Switch Router Application Proxy Question 22 (5 points) What is the difference between a proxy and a frewall? DELL

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