What is Google App Engine for?

What is the default daily limit for emails customers can send using billing service? Not counting Admin Emails (3,000,000 mails per day)

Can you sign into the App Engine Admin Console with your google account?

When Java programming for App Engine, what a preferred development kit?

Does the Python runtime environment include a Python interpreter?

Within Google App Engine, is the global interpreter lock still applicable?

Which model is used by Google App Engine Datastore for updating data?

You can upload your Cron job specifications to the App Engine using the _______________ command.

Which option is accepted by all the actions of the Appcfg command?

When sending an HTTP POST using the Google App Engine URL Fetch API, if a Content-Type header is not set explicitly, the header is set to ___________.

How does the cached data expire in the Google App Engine Memcache API?