In Express Checkout by default, which method will be used to make the final sale?

Which of the following variables will be used to differentiate between live PayPal IPN and Sandbox IPN?

Which of the following URLs will you visit to access or create a PayPal Sandbox account?

While using Express Checkout, where will you post your request for a test transaction?

While using the SOAP API with Signature Security, where will you post your request for a live transaction?

Which of the following HTML variables will be used to "Override Page Styles" on Individual Transactions for your Website Payment buttons?

Which of the following parameters are optional in a SetExpressCheckout request?

Which of the following form actions are used to make test payments using the PayPal Sandbox?

While making a request to the PayPal server, which of the following API security parameters are required if you are using a PayPal API certificate?

Which of the following values are allowed for the cmd form field?

Which of the following does PayPal recommend merchants to display on the return URL?