USPS 421 Window Clerk Exam Questions and
Answers (2025 2026) (Verified Answers)
Fast and affordable max 70lbs $50 insurance another premier shipping service of the
USPS 2-3 DAYS delivery - ANSWER-Priority Mail
Bulk mail usually handled at distribution centers - ANSWER-Parcel Select
Merchant pays postal fee returning merchandise bulk parcel return product - ANSWER-
Parcel Return Services
First class mail, periodicals, standard mail, package services - ANSWER-Mailing
services
proof of mailing uses PS Form 3800 - ANSWER-Certified Mail
Provides up to $5000 in coverage extra service requires PS Form 3813 or 3813-p -
ANSWER-Insured Mail
Provides date and time of delivery, free when you purchase Priority mail now called
USPS Tracking - ANSWER-Delivery Confirmation
POM - ANSWER-Postal Operations Manual
Official Source for updates and updated bi-weekly - ANSWER-Postal bulletin
Does this package contain anything liquid, fragile, potentially hazardous' such as/like
perfume or lithium batteries? - ANSWER-6 Part of HAZMAT question
Tells you when and how to display the POW flag - ANSWER-Postal Bulletin
POW - ANSWER-Prisoner of War
End to end process to ensure mail is collected, distributed and delivered the type of
clock the usps runs on - ANSWER-24 hour clock
Items sent within the US APO, FPO, UN, and its territories and possessions. -
ANSWER-Domestic mail
sets forth the policies, regulations and procedures governing domestic mail - ANSWER-
DMM- Domestic Mail Manual
, sets forth policies, regulations, and procedures governing international mail - ANSWER-
IMM- International Mail Manual
contains policies and procedures for administrative ad support functions within the
postal service - ANSWER-ASM-Administrative and Support Manual
all manuals are found on line via? - ANSWER-Policy Net
Guarantees overnight or next day delivery $100 insurance and free tracking -
ANSWER-Express Mail
Premier Shipping service of the USPS - ANSWER-Express Mail
Bears only stamps as postage weights more than 13 oz and was not excepted at retail
counter. - ANSWER-Anonymous Mail
PVI - ANSWER-Postage Validation Imprinter
AMU - ANSWER-Anonymous Mail Unit
DDD1 - ANSWER-Weighs less than 13 oz
DDD2 - ANSWER-Weighs more than 13 oz
Magazines, newspaper, must be printed at least 4x's times a year from a creditable
organization - ANSWER-Periodicals
Parcel post, bonded printed matter media mail, library mail - ANSWER-package
services
printed matter weighs less than 16 oz must pay annual presort fee min. of 200 pieces or
over 50 lbs - ANSWER-Standard Mail
can be used for gifts weighs up to 70lbs measures max of 130in price based on weigh
distance and shape - ANSWER-Parcel Post
Delivery time 2-3 days( not guaranteed ) - ANSWER-Priority Mail
Delivery time 1-2 days ( overnight and next day ) * Guaranteed - ANSWER-Express
mail ( Priority Mail Express )
Letters size max - ANSWER-6 1/8in in height and 11 1/2in in length max 1/4in in
thickness
Flats size max - ANSWER-15in in length and 12in in height and 3/4in in thickness
Answers (2025 2026) (Verified Answers)
Fast and affordable max 70lbs $50 insurance another premier shipping service of the
USPS 2-3 DAYS delivery - ANSWER-Priority Mail
Bulk mail usually handled at distribution centers - ANSWER-Parcel Select
Merchant pays postal fee returning merchandise bulk parcel return product - ANSWER-
Parcel Return Services
First class mail, periodicals, standard mail, package services - ANSWER-Mailing
services
proof of mailing uses PS Form 3800 - ANSWER-Certified Mail
Provides up to $5000 in coverage extra service requires PS Form 3813 or 3813-p -
ANSWER-Insured Mail
Provides date and time of delivery, free when you purchase Priority mail now called
USPS Tracking - ANSWER-Delivery Confirmation
POM - ANSWER-Postal Operations Manual
Official Source for updates and updated bi-weekly - ANSWER-Postal bulletin
Does this package contain anything liquid, fragile, potentially hazardous' such as/like
perfume or lithium batteries? - ANSWER-6 Part of HAZMAT question
Tells you when and how to display the POW flag - ANSWER-Postal Bulletin
POW - ANSWER-Prisoner of War
End to end process to ensure mail is collected, distributed and delivered the type of
clock the usps runs on - ANSWER-24 hour clock
Items sent within the US APO, FPO, UN, and its territories and possessions. -
ANSWER-Domestic mail
sets forth the policies, regulations and procedures governing domestic mail - ANSWER-
DMM- Domestic Mail Manual
, sets forth policies, regulations, and procedures governing international mail - ANSWER-
IMM- International Mail Manual
contains policies and procedures for administrative ad support functions within the
postal service - ANSWER-ASM-Administrative and Support Manual
all manuals are found on line via? - ANSWER-Policy Net
Guarantees overnight or next day delivery $100 insurance and free tracking -
ANSWER-Express Mail
Premier Shipping service of the USPS - ANSWER-Express Mail
Bears only stamps as postage weights more than 13 oz and was not excepted at retail
counter. - ANSWER-Anonymous Mail
PVI - ANSWER-Postage Validation Imprinter
AMU - ANSWER-Anonymous Mail Unit
DDD1 - ANSWER-Weighs less than 13 oz
DDD2 - ANSWER-Weighs more than 13 oz
Magazines, newspaper, must be printed at least 4x's times a year from a creditable
organization - ANSWER-Periodicals
Parcel post, bonded printed matter media mail, library mail - ANSWER-package
services
printed matter weighs less than 16 oz must pay annual presort fee min. of 200 pieces or
over 50 lbs - ANSWER-Standard Mail
can be used for gifts weighs up to 70lbs measures max of 130in price based on weigh
distance and shape - ANSWER-Parcel Post
Delivery time 2-3 days( not guaranteed ) - ANSWER-Priority Mail
Delivery time 1-2 days ( overnight and next day ) * Guaranteed - ANSWER-Express
mail ( Priority Mail Express )
Letters size max - ANSWER-6 1/8in in height and 11 1/2in in length max 1/4in in
thickness
Flats size max - ANSWER-15in in length and 12in in height and 3/4in in thickness
