A 24-year-old woman with a family history of autoimmune dise…

A 24-year-old woman with a family history of autoimmune disease has recurrent viral infections. Lab testing shows many self-reactive T cells in her periphery and unusually low numbers of regulatory T cells (Tregs). Based on what you learned about tolerance, explain why she is at high risk for autoimmunity. Your response should include negative selection, positive selection, central tolerance, and peripheral tolerance. 

 You are tasked with troubleshooting a network issue where a…

 You are tasked with troubleshooting a network issue where a specific device is not reachable on the network. Upon investigation, you find that the device has a valid IP address but is not responding to pings. You suspect the issue might be related to the device’s physical address. Which of the following should you analyze to confirm your suspicion?