Attention to Detail Test Practice Course 2026

1. 第1题，共17题

   A test asks you to compare two columns and mark each pair as the same or different. What skill is it mainly measuring?

   • ADoing difficult calculations in your head without a calculator
   • BSpotting small differences quickly and accurately
   • CWriting clear and complete reports
   • DRemembering long lists of names and numbers without looking
   显示答案

   答案: B. Spotting small differences quickly and accurately

   Checking tests measure how accurately you compare information and notice small differences, usually against a time limit.

2. 第2题，共17题

   What is a transposition error?

   • AA character is left out, such as 5813 typed as 513
   • BA character is typed twice, such as 5813 typed as 58813
   • CTwo characters swap places, such as 5813 typed as 5831
   • DA wrong character is used, such as 5813 typed as 5873
   显示答案

   答案: C. Two characters swap places, such as 5813 typed as 5831

   A transposition swaps two characters that sit next to each other. Here the 1 and the 3 changed places.

3. 第3题，共17题

   A record shows the code 40712. It was entered as 4072. What type of error is this?

   • ADuplication
   • BTransposition
   • COmission
   • DSubstitution
   显示答案

   答案: C. Omission

   One character (the 1) is missing, so this is an omission. The other digits are in the right order.

4. 第4题，共17题

   Which pair of characters is a classic look-alike pair that you should check with extra care?

   • A0 (zero) and O (capital o)
   • B3 (three) and W (capital w)
   • CK (capital k) and 2 (two)
   • D7 (seven) and A (capital a)
   显示答案

   答案: A. 0 (zero) and O (capital o)

   Zero and the capital letter O look almost the same in many fonts. Other common pairs are 1 and l, 5 and S, 8 and B, and rn and m.

5. 第5题，共17题

   A checking test has 30 questions and a 20-minute time limit. About how much time do you have per question on average?

   • A1 minute 30 seconds
   • B66 seconds
   • C30 seconds
   • D40 seconds
   显示答案

   答案: D. 40 seconds

   20 minutes is 1,200 seconds, and 1,200 ÷ 30 = 40 seconds per question.

6. 第6题，共17题

   You need to compare the account number 7302 9914 0586 with a copy. What is the most reliable method?

   • ACheck that both numbers have the same number of digits
   • BRead the whole number once, quickly, from start to end
   • CCompare it in small groups, one group at a time
   • DLook at the first and last digits only, since errors are rare in the middle
   显示答案

   答案: C. Compare it in small groups, one group at a time

   Breaking a long number into small groups (chunking) lets you compare every character without losing your place.

7. 第7题，共17题

   The instructions say: "Mark A if the two entries are exactly the same and B if they are different." You see "Smith, J.R." and "Smith, J. R." What should you mark?

   • ALeave it blank, because the instructions do not mention spaces
   • BA, because spaces never count in a checking test
   • CB, because the spacing is different
   • DA, because both name the same person
   显示答案

   答案: C. B, because the spacing is different

   "Exactly the same" means every character, including spaces and punctuation. One entry has a space after "J." and the other does not.

8. 第8题，共17题

   What is a substitution error?

   • AA whole word is typed twice, such as Brown typed as Brown Brown
   • BA letter is missing from the word, such as Brown typed as Brwn
   • CTwo letters next to each other swap places, such as Brown typed as Brwon
   • DOne character is replaced by a different one, such as Brown typed as Browm
   显示答案

   答案: D. One character is replaced by a different one, such as Brown typed as Browm

   In a substitution, the right number of characters is there, but one of them is wrong: the n became an m.

9. 第9题，共17题

   The source date is 2026-04-18. Which entry shows a duplication error?

   • A2026-04-19
   • B2026-04-188
   • C2026-04-1
   • D2026-04-81
   显示答案

   答案: B. 2026-04-188

   A duplication repeats a character: the 8 was typed twice. The other entries show a transposition, an omission and a substitution.

10. 第10题，共17题

    You are unsure about a question and time is running short. What is the best approach?

    • AGo back to the first question and start the whole test again
    • BChoose your best answer, mark it for review if the test allows it, and move on
    • CLeave every hard question blank and never come back to it
    • DStay on the question until you are completely sure, however long it takes
    显示答案

    答案: B. Choose your best answer, mark it for review if the test allows it, and move on

    Do not let one question use up your time. In the Public Service Commission's online tests, you can mark a question for review, and marking does not affect your score.

11. 第11题，共17题

    In the Public Service Commission of Canada's supervised online tests, what happens when the time allowed runs out?

    • AYour unanswered questions move to a second session
    • BThe computer closes the test
    • CThe test pauses until you click Continue
    • DYou get 5 extra minutes to finish
    显示答案

    答案: B. The computer closes the test

    The Public Service Commission says a timer shows the time left, and the computer closes the test after the allotted time.

12. 第12题，共17题

    A source sign says "Corner Store". The copy says "Comer Store". What most likely happened?

    • AThe letters r and n were read as the letter m
    • BTwo letters were swapped near the end of the word
    • CAn extra letter was added to the middle of the word
    • DNothing; the two are the same
    显示答案

    答案: A. The letters r and n were read as the letter m

    Next to each other, r and n can look like m. "Corner" has 6 letters and "Comer" has 5.

13. 第13题，共17题

    Two people check a list together: one reads the source aloud while the other follows the copy. What is the main benefit?

    • AThe check can be done without any source document at all
    • BIt removes the need to check numbers
    • CErrors one person reads past are more likely to be caught
    • DIt is always faster than one person checking alone
    显示答案

    答案: C. Errors one person reads past are more likely to be caught

    A read-back check uses two sets of eyes and ears, so mistakes one person misses are more likely to be caught.

14. 第14题，共17题

    A unit is listed as "4B" in the source. The copy says "48". What kind of mistake is this most likely to be?

    • AAn omission of one character from the unit number
    • BA look-alike character mix-up between B and 8
    • CA duplication of one character in the unit number
    • DA transposition of two digits next to each other
    显示答案

    答案: B. A look-alike character mix-up between B and 8

    B and 8 look similar, especially in small print or handwriting. The number of characters is the same, so nothing was added or left out.

15. 第15题，共17题

    Two candidates each answered 30 questions. Ana got 27 right. Ben worked faster but got 22 right. The pass mark is 80%. Who passed?

    • ABen only
    • BNeither of them
    • CBoth Ana and Ben
    • DAna only
    显示答案

    答案: D. Ana only

    Ana scored 27 ÷ 30 = 90%. Ben scored 22 ÷ 30 = about 73%, below 80%. In checking tests, accuracy matters more than speed alone.

16. 第16题，共17题

    The source name is MARTINEZ. It was entered as MARITNEZ. What type of error is this?

    • ASubstitution
    • BOmission
    • CDuplication
    • DTransposition
    显示答案

    答案: D. Transposition

    The T and the I swapped places (MAR-TI-NEZ became MAR-IT-NEZ). Both names have 8 letters.

17. 第17题，共17题

    The source shows the reference number 3317-0820. Which entry is a transposition of it?

    • A3317-820
    • B3317-0280
    • C3317-08820
    • D3317-0820
    显示答案

    答案: B. 3317-0280

    In 3317-0280, the 8 and the 2 have swapped places. The other options are an exact match, an omission and a duplication.

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