The threats as well as the risk and vulnerabilities are present with the WLAN. The WLAN would encounter security issues with the range of the signal which is wireless, SSID broadcasting, password security and the packet sniffing or the capturing of signal.
Answer: Something people can change and share. It is usually given the bad name of have a bunch of fake information and bugs. Wikipedia is a good example of an open source website but it is not a program.
Explanation: An open source program is a program where you have free rein to basically do whatever you want to it.
She would make use of JavaScript if she wants to make it interactive, CSS if she wants to design it, Text editor obviously for coding the blog and a web browser for the result hope this helps