Hi, I have more than 3 years of experience in applications development for android, and also about 10 years of experience in programming in .Net, C#, VB and Java. I worked for 3 years in big IT & software organization, and I have a lot of experience in SQL, so I can setting up your database, and build PHP interface to update your questions.
I created before applications that communicate with PC over WiFi, I can develop your program for android(tablet, client-side) and windows(for PC) and also server-side to auto update the question list.
*** I Already created a prototype for your application. therefore, depends on your requirements, I can deliver it in 2-3 days.(please contact me for more details) ***
Tablet: Java + android SDK (Android only)
PC: .Net(C#) Clients communicate over WiFi and TCP/IP.
Server-side(if needed): mySql + PHP
feel free to contact me I will get back to you ASAP.