CASS Software Certification & Testing 4 — Questions and Answers
Question 1: A CASS system flags an address as 'DPV Vacant'. What action should a mailer typically take with this record?
- Suppress the record from the mailing to avoid waste (Correct answer)
- Deliver the mail anyway since the address is valid
- Escalate the record to the USPS for physical inspection
- Reassign the address to the nearest active delivery point
Correct answer: Suppress the record from the mailing to avoid waste
DPV Vacant addresses are real, deliverable addresses but are currently unoccupied, so suppressing them avoids wasteful or undeliverable mail pieces.
Question 2: What is the purpose of SuiteLink in CASS address processing?
- To append secondary address information (suite numbers) to high-rise business addresses (Correct answer)
- To link multiple mailings from the same sender into a single presort
- To validate the relationship between a primary address and its P.O. Box
- To match apartment numbers to individual unit delivery points
Correct answer: To append secondary address information (suite numbers) to high-rise business addresses
SuiteLink is a USPS product that appends suite/floor/unit information to business addresses that were entered without secondary information.
Question 3: In the context of CASS certification, what does 'false negative' mean?
- A deliverable address that the software incorrectly marks as undeliverable (Correct answer)
- An address the software matches to an incorrect delivery point
- A ZIP Code returned without the +4 extension
- A P.O. Box incorrectly classified as a residential address
Correct answer: A deliverable address that the software incorrectly marks as undeliverable
A false negative occurs when CASS software fails to confirm a valid, deliverable address, incorrectly treating it as non-deliverable.
Question 4: Which USPS database product is specifically used by CASS software to identify recently moved individuals and update their addresses?
- NCOALink (Correct answer)
- LACSLink
- SuiteLink
- DPV database
Correct answer: NCOALink
NCOALink (National Change of Address) is the USPS-licensed database that CASS-integrated software uses to identify and update addresses for people who have moved.
Question 5: When performing CASS processing, which of the following input address components has the highest priority during matching conflict resolution?
- ZIP Code (Correct answer)
- City name
- State abbreviation
- Street name
Correct answer: ZIP Code
The ZIP Code is given highest priority in CASS matching because it precisely identifies the geographic delivery area, overriding potentially inconsistent city or street data.
Question 6: A CASS software vendor wants to test address processing throughput under peak load. Which testing type is most appropriate?
- Performance/load testing (Correct answer)
- Unit testing
- Smoke testing
- Acceptance testing
Correct answer: Performance/load testing
Performance/load testing simulates high-volume conditions to measure how the software performs under peak address processing demand.
Question 7: What does a DPV 'Y' confirmation code indicate when returned by CASS software?
- The address is fully confirmed as a valid delivery point (Correct answer)
- The address partially matched at the street level only
- The address is confirmed vacant
- The address matched to a P.O. Box only
Correct answer: The address is fully confirmed as a valid delivery point
DPV code 'Y' means the complete address — including both primary and secondary components — was confirmed as a valid, active delivery point.
CASS Software Certification & Testing 4
A CASS system flags an address as 'DPV Vacant'.
What action should a mailer typically take with this record?