Advanced Cards & Payments Concepts Quiz

In ISO 8583, a bitmap is a field or subfield within a message, which indicates whether other data elements or data element subfields are present elsewhere in the message.

The leading six or eight digits of the card number comprise the issuer identification number (IIN) sometimes referred to as the “bank identification number (BIN)”. The remaining numbers on the card, except the last digit, are the individual account identification number. The last digit is the Luhn check digit.

DE 55, also called Field 55, in ISO-8583 is created by the terminal during the transaction, and the card. DE55 has various elements within it; some of them are read from/ created by the card (when the terminal asks) and the rest are provided by the terminal based on the transaction being carried out.

Let’s imagine an ATM day:

• ATM receives x800 to start;
• ATM send x800 request the encryption key (master key exchange);
• ATM send x100 messages during the day for balance inquiry;
• ATM send x200 messages during the day for cash withdraw;
• ATM receive x600 from bank to check the total cash amount available.
• ATM send x500 reconciliation message at the end of the day with daily activity.

The Administrative message may contain any message related to the exchange of technical infrastructure information between financial institutions.

An open API (often referred to as a public API) is a publicly available application programming interface that provides developers with programmatic access to a proprietary software application or web service.APIs are sets of requirements that govern how one application can communicate and interact with another. APIs can also allow developers to access certain internal functions of a program, although this is not typically the case for web APIs. In the simplest terms, an API allows one piece of software to interact with another piece of software, whether within a single computer via a mechanism provided by the operating system or over an internal or external TCP/IP-based or non-TCP/IP-based network

This information in this field may be useful later in the event of a payment reversal request, for example, to identify linking financial messages in the system

The local currency of the acquirer or source location of the transaction. e.g. ‘840’ (indicating $USD)

PAN truncation replaces the card number printed on a customer receipt with a printout of a selected number of card digits the remainder either not shown, or masked by asterisks.

Correct{{{split}}}The PAN number is the number that is embossed, printed and/or encoded on a plastic card that identifies the issuer and the particular cardholder account.

The leading six or eight digits of the card number comprise the issuer identification number (IIN) sometimes referred to as the “bank identification number (BIN)”. The remaining numbers on the card, except the last digit, are the individual account identification number. The last digit is the Luhn check digit.

The PAN number is the number that is embossed, printed and/or encoded on a plastic card that identifies the issuer and the particular cardholder account. Mask PAN when displayed (the first six and last four digits are the maximum number of digits to be displayed), such that only personnel with a legitimate business need can see the full PAN.  This requirement relates to protection of PAN displayed on screens, paper receipts, printouts, etc., and is not to be confused with PCI-DSS Requirement 3.4 for protection of PAN when stored in files, databases, etc.

There are up to three tracks on magnetic cards known as tracks 1, 2, and 3. Track 3 often isn’t even physically present on the card by virtue of a narrower magnetic stripe. Point-of-sale card readers almost always read track 1, or track 2, and sometimes both, in case one track is unreadable. The minimum cardholder account information needed to complete a transaction is present on both tracks. Track 1 has a higher bit density (210 bits per inch vs. 75), and is the only track that may contain alphabetic text, and hence is the only track that contains the cardholder’s name.

Correct{{{split}}}The PAN number is the number that is embossed, printed and/or encoded on a plastic card that identifies the issuer and the particular cardholder account.