When should an MD5 hash check be performed when processing evidence?

Tyler is setting up a wireless network for his business that he runs out of his home. He has followed all the directions from the ISP as well as the wireless router manual. He does not have any encryption set and the SSID is being broadcast. On his laptop, he can pick up the wireless signal for short periods of time, but then the connection drops and the signal goes away.
Eventually the wireless signal shows back up, but drops intermittently. What could be Tyler issue with his home wireless network?

What is kept in the following directory? HKLM\SECURITY\Policy\Secrets

Which of the following tool captures and allows you to interactively browse the traffic on a network?

What is the investigator trying to view by issuing the command displayed in the following screenshot?