CASS USPS Addressing Standards & Compliance 5 — Questions and Answers
Question 1: Which USPS program specifically validates addresses against current carrier route information to assign the correct carrier route code?
- DPV (Delivery Point Validation)
- CASS (Coding Accuracy Support System) (Correct answer)
- LACSLink
- SuiteLink
Correct answer: CASS (Coding Accuracy Support System)
CASS processing assigns carrier route codes (the four-character code identifying the specific carrier delivery route) as part of address standardization.
Question 2: An address reads '123 MAIN ST APT 4B'. According to USPS standards, what is the secondary unit designator in this address?
- MAIN
- ST
- APT (Correct answer)
- 4B
Correct answer: APT
The secondary unit designator is 'APT' (apartment), which identifies the type of secondary unit; '4B' is the secondary unit number.
Question 3: What is the correct USPS standard state abbreviation for the state of Tennessee?
- TE
- TN (Correct answer)
- TEN
- TS
Correct answer: TN
The USPS standard two-letter abbreviation for Tennessee is 'TN', as defined in the official state abbreviation list.
Question 4: In the context of CASS processing, what does a 'false positive' match represent?
- An address that matches but should not have been deliverable
- A correct address that was incorrectly flagged as undeliverable
- An address matched to the wrong delivery point (Correct answer)
- An address processed outside the CASS cycle
Correct answer: An address matched to the wrong delivery point
A false positive match occurs when CASS incorrectly matches an input address to a different, valid delivery point rather than the intended one.
Question 5: Which component of a ZIP+4 code identifies the specific side of a street segment?
- The first two digits of the ZIP
- The last two digits of the +4 add-on (Correct answer)
- The carrier route code
- The delivery point barcode check digit
Correct answer: The last two digits of the +4 add-on
The last two digits of the ZIP+4 add-on code (the sector/segment) help identify specific street segments, including odd or even sides of a block.
Question 6: A mailer's input file contains addresses from 2019 that have never been CASS processed. Why might these addresses have a lower standardization rate today?
- CASS software cannot process addresses older than 3 years
- Addresses, ZIP codes, and streets may have changed since 2019 due to city expansion or renaming (Correct answer)
- The 2019 addresses lack the required 9-digit ZIP format
- Older addresses require a different CASS certification level
Correct answer: Addresses, ZIP codes, and streets may have changed since 2019 due to city expansion or renaming
Over time, streets are renamed, new ZIP codes are created, and developments change, so older unprocessed addresses may no longer match current AMS data.
Question 7: What does the SuiteLink process add to a CASS-certified address matching workflow?
- It converts PO Boxes to street addresses for business recipients
- It appends secondary suite information to high-rise business addresses that lack unit numbers (Correct answer)
- It validates addresses in US territories and military mail destinations
- It cross-references addresses against the Do Not Mail list
Correct answer: It appends secondary suite information to high-rise business addresses that lack unit numbers
SuiteLink matches business names at high-rise addresses to append missing secondary unit (suite) information using USPS business-name data.
CASS USPS Addressing Standards & Compliance 5
Which USPS program specifically validates addresses against current carrier route information to assign the correct carrier route code?