Is Sandbox available for testing?

What protocol does PayPal use to authorize calls?

Which of these languages do NOT have PayPal supported SDKs?

True or false? When completing a payment using a stored card, you pass "credit_card_token" instead of "credit_card."

In regards to refunds, which of these are valid reasons for a TRANSACTION_REFUSED error message?

Which of these parameters are NOT among the minimum required to perform a request to the Payflow gateway?

_____ is a popular online payment system used on many online auction sites.

True or false? PayPal validates credit card information that is stored on "/vault/credit-card."

After a /payment call has been executed successfuly what must you do to return a confimation of the transaction?

For a DoDirectPayment API call, which of the following values will be used with the PAYMENTACTION parameter to make the final sale for a credit card?

When completing a full refund you should set the JSON payload to which of the following?