USPS Exam 421 Window Clerk 2025 Study Guide & Practice Questions

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USPS Exam 421 Window Clerk (NEW UPDATED VERSION) LATEST ACTUAL
EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED QUESTIONS AND
ANSWERS)- GUARANTEED PASS A+ 2025-2026




Postal service employees operate under a mandate to protect and
preserve the mail paced in its: - CORRECT ✔✔✔✔✔ Custody


QUESTION : What are 4 violations of security and sanctity of the mail
- CORRECT ✔✔✔✔✔ Theft, Open, Damage or Delay


QUESTION : The first opportunity for a SSA to start the customer
experience on a positive is: - CORRECT ✔✔✔✔✔ Deliver 1st
Impression


QUESTION : Type of communication that can enhance or contradict
messages: - CORRECT ✔✔✔✔✔ Non-Verbal Communication


QUESTION : The approach a SSA can use to engage our customer
and ensure needs are met is: - CORRECT ✔✔✔✔✔ A+GIST


QUESTION : Why is maintaining sanctity of the mail one of the core
responsibilities of the postal service? - CORRECT ✔✔✔✔✔ To
instill customer confidence


QUESTION : Successful sales transactions occur when the SSA: -
CORRECT ✔✔✔✔✔ Makes an informed mutual decision with
customer on products and services


2026 2027 GRADED A+

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QUESTION : What is the most positive way to impact customer
perception of the post office? - CORRECT ✔✔✔✔✔ Provide world
class service


QUESTION : The US Postal Service is the only delivery that reaches: -
CORRECT ✔✔✔✔✔ Every address in the nation 6 days a week


QUESTION : An organized workstation creates a more
__________________ workpace - CORRECT ✔✔✔✔✔ Effiecient


QUESTION : How a SSA conducts themselves on the job effects the? -
CORRECT ✔✔✔✔✔ Postal Brand


QUESTION : An active listening technique used to create a successful
transaction is called - CORRECT ✔✔✔✔✔ Clarifying


QUESTION : One of the first things a customer notices about a SSA is
- CORRECT ✔✔✔✔✔ Personal Appearance


QUESTION : The primary law enforcement for USPS is the -
CORRECT ✔✔✔✔✔ United States Postal Inspection Service
(USPIS)


QUESTION : Preferred service that usually offer the customer the best
value is - CORRECT ✔✔✔✔✔ Priority Mail Express and Priority Mail




2026 2027 GRADED A+

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QUESTION : Customer wants to mail fewer then 5000 flat sized to
everyone in a specific area. What would you offer? - CORRECT
✔✔✔✔✔ Every Door Direct Mail (EDDM)


QUESTION : First class mail consists of greeting cards, statements
bills and what? - CORRECT ✔✔✔✔✔ Business Documents


QUESTION : Any mailable item weighing _______ or less can be sent
first class mail - CORRECT ✔✔✔✔✔ 13 oz


QUESTION : A Priority Mail Express customer is entitled to a refund if:
- CORRECT ✔✔✔✔✔ Delivered Late


QUESTION : Regardless of weight up to 70lbs the price that applies to
Retail Ground parcels over 108" but no more than 130" is: -
CORRECT ✔✔✔✔✔ Oversized Pricing


QUESTION : The max length and girth for Priority Mail is - CORRECT
✔✔✔✔✔ 108"


QUESTION : What type of mail consists of items sent within the
United States - CORRECT ✔✔✔✔✔ Domestic


QUESTION : What pricing may be charged for PM items measuring
over one cubic foot designating to Zone 6? - CORRECT ✔✔✔✔✔
Dimensional




2026 2027 GRADED A+

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QUESTION : What can you offer customers for their mailing and
shipping needs? - CORRECT ✔✔✔✔✔ Solutions


QUESTION : Which category of products do premier products
belong? - CORRECT ✔✔✔✔✔ Shipping


QUESTION : Which category of products does First Class Mail belong
- CORRECT ✔✔✔✔✔ Mailing


QUESTION : What type of products are offered to provide the best
value to the customer? - CORRECT ✔✔✔✔✔ Premier


QUESTION : Which product provides the fastest delivery service? -
CORRECT ✔✔✔✔✔ Express


QUESTION : What must customers provide for every item mailed? -
CORRECT ✔✔✔✔✔ Address


QUESTION : Which USPS service is automatically included for PME,
PM, FCM, Retail Ground, library mail and media mail - CORRECT
✔✔✔✔✔ Tracking


QUESTION : Which charts are used to calculate PME, PM, and USPS
Retail Ground Prices? - CORRECT ✔✔✔✔✔ Zone


QUESTION : Change of Address is valid for: - CORRECT ✔✔✔✔✔
18 months


2026 2027 GRADED A+