CASS Mailing List Management & Dedup 3

Question 1

What does a 'fuzzy match' algorithm do differently than an exact match during list deduplication?

Accepted Answer

It tolerates minor spelling variations and typographical errors

Answer

Fuzzy matching uses phonetic or edit-distance algorithms to catch duplicates where names or addresses differ slightly due to typos or alternate spellings.

Question 2

A mailer's house list contains 500,000 records. After merge-purge with two rented lists, 120,000 duplicates are removed. What is the net unique count?

Accepted Answer

380,000

Answer

The combined list had records but 120,000 duplicates were removed from the total, leaving 500,000 − 120,000 = 380,000 unique records (assuming duplicates found only in the combined pool referenced back to the house list base).

Question 3

Which USPS product is specifically designed to help mailers identify addresses that will not receive mail, enabling list suppression before mailing?

Accepted Answer

Delivery Point Validation (DPV)

Answer

DPV confirms whether an address is a valid, active delivery point; addresses that fail DPV can be suppressed to avoid UAA mail.

Question 4

In CASS dedup processing, what is a 'pander file'?

Accepted Answer

A suppression file of individuals who have requested no promotional mail

Answer

A pander file, such as the DMA Mail Preference Service file, contains opt-out requests from consumers who do not wish to receive unsolicited promotional mail.

Question 5

After a merge-purge, a mailer notices the same individual appears twice with slightly different addresses — one standardized and one not. The most likely cause is:

Accepted Answer

The dedup software used only exact address matching without standardization

Answer

Without address standardization before dedup, variant address formats (e.g., 'Street' vs 'St') prevent exact matching and allow duplicates to survive.

(CASS) Coding Accuracy Support System Certification Practice Test

(CASS) Coding Accuracy Support System Certification Practice Test

CASS Mailing List Management & Dedup 3