2026 USPS Exam 421 Window Clerk Practice – NEW Updated Version | Latest Actual Questions & Correct Answers | Guaranteed Pass A+

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




End to end process to ensure mail is collected, distributed and delivered the type
of clock the usps runs on - CORRECT ANSWER 24 hour clock


QUESTION :Items sent within the US APO, FPO, UN, and its territories and
possessions. - CORRECT ANSWER Domestic mail


QUESTION :sets forth the policies, regulations and procedures governing
domestic mail - CORRECT ANSWER DMM- Domestic Mail Manual


QUESTION :sets forth policies, regulations, and procedures governing
international mail - CORRECT ANSWER IMM- International Mail Manual


QUESTION :contains policies and procedures for administrative ad support
functions within the postal service - CORRECT ANSWER ASM-
Administrative and Support Manual


QUESTION :all manuals are found on line via? - CORRECT ANSWER Policy
Net


QUESTION :Guarantees overnight or next day delivery $100 insurance and free
tracking - CORRECT ANSWER Express Mail



QUESTION :Premier Shipping service of the USPS - CORRECT ANSWER
Express Mail




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QUESTION :Fast and affordable max 70lbs $50 insurance another premier
shipping service of the USPS 2-3 DAYS delivery - CORRECT ANSWER
Priority Mail


QUESTION :Bulk mail usually handled at distribution centers - CORRECT
ANSWER Parcel Select


QUESTION :Merchant pays postal fee returning merchandise bulk parcel return
product - CORRECT ANSWER Parcel Return Services



QUESTION :First class mail, periodicals, standard mail, package services -
CORRECT ANSWER Mailing services



QUESTION :proof of mailing uses PS Form 3800 - CORRECT ANSWER
Certified Mail


QUESTION :Provides up to $5000 in coverage extra service requires PS Form
3813 or 3813-p - CORRECT ANSWER Insured Mail


QUESTION :Provides date and time of delivery, free when you purchase Priority
mail now called USPS Tracking - CORRECT ANSWER Delivery Confirmation



QUESTION :POM - CORRECT ANSWER Postal Operations Manual



QUESTION :Official Source for updates and updated bi-weekly - CORRECT
ANSWER Postal bulletin


QUESTION :Does this package contain anything liquid, fragile, potentially
hazardous' such as/like perfume or lithium batteries? - CORRECT ANSWER
6 Part of HAZMAT question



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QUESTION :Tells you when and how to display the POW flag - CORRECT
ANSWER Postal Bulletin



QUESTION :POW - CORRECT ANSWER Prisoner of War


QUESTION :Bears only stamps as postage weights more than 13 oz and was not
excepted at retail counter. - CORRECT ANSWER Anonymous Mail



QUESTION :PVI - CORRECT ANSWER Postage Validation Imprinter



QUESTION :AMU - CORRECT ANSWER Anonymous Mail Unit



QUESTION :DDD1 - CORRECT ANSWER Weighs less than 13 oz



QUESTION :DDD2 - CORRECT ANSWER Weighs more than 13 oz


QUESTION :Magazines, newspaper, must be printed at least 4x's times a year
from a creditable organization - CORRECT ANSWER Periodicals



QUESTION :Parcel post, bonded printed matter media mail, library mail -
CORRECT ANSWER package services


QUESTION :printed matter weighs less than 16 oz must pay annual presort fee
min. of 200 pieces or over 50 lbs - CORRECT ANSWER Standard Mail


QUESTION :can be used for gifts weighs up to 70lbs measures max of 130in
price based on weigh distance and shape - CORRECT ANSWER Parcel Post



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QUESTION :Delivery time 2-3 days( not guaranteed ) - CORRECT ANSWER
Priority Mail


QUESTION :Delivery time 1-2 days ( overnight and next day ) * Guaranteed -
CORRECT ANSWER Express mail ( Priority Mail Express )



QUESTION :Letters size max - CORRECT ANSWER 6 1/8in in height and 11
1/2in in length max 1/4in in thickness


QUESTION :Flats size max - CORRECT ANSWER 15in in length and 12in in
height and 3/4in in thickness


QUESTION :Machinable Parcels - CORRECT ANSWER min 3in max 17in
weight 6 oz min and 25lbs max


QUESTION :Rolls that are longer than machinable parcels - CORRECT
ANSWER Irregular Parcels



QUESTION :How many zones - CORRECT ANSWER 8


QUESTION :effects zones 1-4 piece weighs less than 20lbs but longer than 84in
and is charged the 20lb price - CORRECT ANSWER Balloon Price



QUESTION :Effects zones 5-8 can't exceed 1728cu ft max 108in in girth -
CORRECT ANSWER Dimensional Price



QUESTION :How often is the Postal bulletin printed - CORRECT ANSWER
Bi-weekly



practice exam 2026