Question
1. Encryption can take place at several different layers of the protocol stack. Does encryption make sense at level 1 (the Physical Layer)? Why, or
1. Encryption can take place at several different layers of the protocol stack. Does encryption make sense at level 1 (the Physical Layer)? Why, or why not? 2. What are some of the significant differences between encryption at level 2 (the Data Link Layer) and at level 3 (the Network Layer). Think about what each layer does, and hence when, as a message passes through the network, encryption and decryption need to take place depending on whether the encryption takes place at level 2 or level 3. Discuss the benefits and risks of each. 3. Be creative, but realistic: Describe an example (of your own creation) of a business. Be brief, but clear. If you have a part-time job or a family business you could describe that business. If you don't have any direct experience of a business from the inside, that's ok -- you're interacting with businesses all the time, so you can choose a business that you are a customer of and describe it. Now develop a sample risk control spreadsheet for assets and threats that you can identify or imagine in your described business. The spreadsheet doesn't have to be complete, but it should be representative or a wide range of concerns.
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