PowerCert Animated Videos

What is IPconfig? How do you flush your DNS cache? What is DNS spoofing? IPconfig is a command line tool that displays the TCP/IP network configuration of the network adapters on a windows computer. It displays things like your IP address, the subnet mask, and the default gateway. It also discusses flushing the DNS cache and switches, such as: /flushdns /displaydns /all. It also discusses what is a dual stack. #ipconfig 0:00 IPconfig 1:29 Dual Stack 3:32 IPconfig/all 5:01 Flushing DNS 6:59 DNS Spoofing 7:34 /displaydns

What is netstat? Netstat is a command line tool that is used to display the current network connections and port activity on your computer. It’s a useful tool that you can use to see what service may be running on your computer or server and what ports are open. Netstat -b requires elevation and has to be run as an administrator. You can open cmd as an administrator by searching for it in the Windows search bar located in the bottom left corner of the desktop screen. Type cmd in the search bar, then, right-click on Command Prompt and select Run as administrator. 0:00 Intro 0:58 Netstat Example 1:51 Netstat -n 3:04 Netstat -a 4:10 Netstat -b 4:36 Netstat -f 4:54 Netstat -bf 5:20 Netstat -an 5:45 Netstat -?

What is APIPA? If Microsoft Windows computers cannot make contact with a DHCP server to get an IP address, they will self-assign themselves an IP address. These IP addresses will be in this range 169.254.0.1 - 169.254.255.254. And the reason they do this is so that they will still be able to communicate with other computers on the same local network/subnet that also have self-assigned IP addresses. #APIPA

What is a default gateway? A default gateway is a device that forwards data from one network to another. And the majority of the time this is going to be a router. This video also explains what is the host and network portion of an IP address.

This is an animated video comparing Bluetooth vs Wifi. These are radio frequency technologies that are used for wirelessly connecting electronic devices. Bluetooth is for connecting devices to each other. And Wifi is for connecting devices to the internet.