8.2 Ordering by Priority Queues, Chronology, Alphanumeric Rules & Sentence Logic

Ordering by Priority Queues, Chronology, Alphanumeric Rules & Sentence Logic

In the official Notice of Examination for Exam No. 7307, DCAS explicitly notes that the items a candidate must put in order "can include numbers, letters, words, pictures, procedures, sentences and mathematical or logical operations." While Section 8.1 covered operational procedures, this guide also practices sorting multi-criteria dispatch queues, jumbled chronological timelines, alphanumeric CAD identifiers, and disordered narrative sentences.

Because calculators and electronic aids are prohibited at DCAS testing centers, mastering structured mental sorting techniques can reduce errors to a misread tie-breaker or a reversed timestamp.

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1. Multi-Criteria Dispatch Queue Ordering (Tie-Breaking Rules)

At a busy NYPD radio dispatch console, several pending CAD jobs may appear on screen simultaneously awaiting unit assignment. This guide practices that task with 4 or 5 pending CAD jobs and a multi-tier sorting rule (Primary Rule, Secondary Tie-Breaker, and Tertiary Tie-Breaker).

Consider this standard three-tier dispatch queue rule:

• Primary Sort (Priority Level): Dispatch jobs in ascending numerical priority order (Priority 1 first, then Priority 2, then Priority 3).
• Secondary Tie-Breaker (Weapon Status): If two or more jobs share the same Priority Level, dispatch any job with Weapon Present = Yes before Weapon Present = No.
• Tertiary Tie-Breaker (Queue Timestamp): If two or more jobs share both the same Priority Level and the same Weapon Status, dispatch the job with the earliest 24-hour entry timestamp (HH:MM) first.

Worked Example: Sorting Five Pending CAD Jobs

Suppose the following five jobs are waiting in the Brooklyn North dispatch queue:

Step-by-Step Resolution

1. Group by Primary Sort (Priority Level):
   • Priority 1 Group: BK-204, BK-207, BK-215 (these three must fill spots 1, 2, and 3).
   • Priority 2 Group: BK-219 (automatically takes 4th place).
   • Priority 3 Group: BK-211 (automatically takes 5th place, even though its timestamp 18:05 is the earliest on the entire table!).
2. Break Ties Inside the Priority 1 Group Using the Secondary Rule (Weapon Present):
   • BK-207 (Weapon: Yes) and BK-215 (Weapon: Yes) outrank BK-204 (Weapon: No). Thus, BK-204 takes 3rd place.
3. Break the Final Tie Between BK-207 and BK-215 Using the Tertiary Rule (Earliest Timestamp):
   • BK-215 entered at 18:09, which is earlier than BK-207 at 18:14. Thus, BK-215 is 1st and BK-207 is 2nd.
4. Final Verified Sequence: BK-215 → BK-207 → BK-204 → BK-219 → BK-211.

Notice how the exam constructs trap options: one distractor will sort all five jobs purely by timestamp (BK-211 first because 18:05 is earliest), while another distractor will reverse the tertiary tie-breaker and put BK-207 (18:14) ahead of BK-215 (18:09). Never apply a lower-tier tie-breaker across different primary groups.

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2. Reconstructing Chronological Timelines from Relative Time Clues

A second classic Information Ordering format presents four or five unnumbered event statements describing a police response and asks you to place them in chronological order (earliest to latest) or reverse chronological order (latest/most recent to earliest). Instead of giving five clean timestamps, the prompt gives one anchor clock time and four relative time offsets.

The Three-Step Absolute Timestamp Method

Never try to hold relative phrases ("three minutes before Y, which happened five minutes after X") in your head simultaneously. Convert every statement into a concrete 24-hour clock timestamp (HH:MM) first:

1. Find the Anchor Event: Scan all statements for the single explicit clock time.
   • Clue B: "The initial 911 call reporting shots fired was logged at 14:05." → Event B = 14:05.
2. Compute Dependent Events One Link at a Time:
   • Clue D: "The radio dispatcher broadcast the high-priority BOLO two minutes after the initial 911 call was logged." → 14:05 + 0:02 = Event D = 14:07.
   • Clue A: "Patrol Sector 4A arrived at the intersection six minutes after the dispatcher broadcast the BOLO." → 14:07 + 0:06 = Event A = 14:13.
   • Clue C: "A second witness texted a photo of the fleeing vehicle three minutes before Patrol Sector 4A arrived at the intersection." → 14:13 - 0:03 = Event C = 14:10.
   • Clue E: "Aviation Unit 2 spotted the suspect vehicle on the expressway four minutes after the second witness texted the photo." → 14:10 + 0:04 = Event E = 14:14.
3. Sort by the Exact Direction Requested in the Question Stem:
   • If asked for earliest to latest (chronological): B (14:05) → D (14:07) → C (14:10) → A (14:13) → E (14:14).
   • If asked for most recent / latest to earliest: E (14:14) → A (14:13) → C (14:10) → D (14:07) → B (14:05).

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3. Alphanumeric Code, Case-ID & Console Picture Ordering

To test ordering of numbers, letters, words, and pictures, These practice drills use mixed alphanumeric strings—such as NYPD CAD job numbers, precinct sector codes, property clerk invoice codes, or labeled console flowchart boxes—and provides a multi-segment formatting rule.

Suppose a rule requires sorting incident archive files by:

1. Segment 1 — Borough Prefix in alphabetical order (BK, BX, MN, QN, SI).
2. Segment 2 — Precinct Number in ascending numerical value (e.g., Precinct 009 before 073 before 104 before 114—watch out for middle digit swaps like 104 vs. 114!).
3. Segment 3 — Tour Letter in reverse alphabetical order (C before B before A).
4. Segment 4 — 4-Digit Sequence Number in ascending numerical order.

When comparing codes like QN-104-B-4089 and QN-104-B-4098, scan column by column from left to right rather than reading the whole string at once. The first three segments (QN, 104, B) are identical; comparing the fourth segment digit by digit (4-0-8-9 vs. 4-0-9-8) immediately reveals that 4089 precedes 4098.

Similarly, when an exam item displays a visual console workflow diagram or numbered map pictures, trace the exact directional arrows and decision-diamond labels (YES vs. NO) specified by the scenario facts without skipping intermediate verification boxes.

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4. Logical Sentence & Procedure Assembly

When asked to arrange four or five jumbled sentences into a coherent CAD incident narrative or departmental directive paragraph, use both operational sequence logic and grammatical reference clues:

• Sentence Position 1 (The Trigger / Topic Introduction): Introduces the full noun or initiating condition without backward-pointing pronouns (e.g., "When a Police Communications Technician receives an automatic alarm notification from a commercial bank...").
• Sentence Position 2 (Immediate Verification / Mandatory First Check): States the immediate verification step linked to that trigger.
• Sentence Position 3 (Action / Pronoun Link): Look for demonstrative pronouns and transition markers such as "Once this verification is complete," "If those units are unavailable," or "Following that broadcast." A sentence containing "this broadcast" must follow an established antecedent, but not necessarily immediately. Adjacency is required only when a rule or the paragraph logic explicitly requires it.
• Final Sentence Position (Disposition / Closure): Records the final CAD disposition code, supervisor sign-off, or log closure.

Ordering Mathematical and Logical Operations

DCAS explicitly lists mathematical and logical operations among possible ordering material. Here is an original supplied arithmetic rule: start with 6, add 4, multiply the result by 3, then subtract 5. The steps are 6 → 10 → 30 → 25. Multiplying before adding gives 6 × 3 + 4 − 5 = 17, which violates the stated sequence. This is an instruction-following exercise, not permission to replace the stated algorithm with ordinary expression precedence. If the question instead provides an expression, use its parentheses and ordinary precedence: (6 + 4) × 3 − 5 = 25, while 6 + 4 × 3 − 5 = 13.

For a supplied logical algorithm, first evaluate A AND B, then apply NOT to that result. With A true and B false, A AND B is false; NOT false is true. Reordering it to (NOT A) AND B gives false. Write the intermediate truth value mentally so an option cannot quietly move NOT from the whole result to one input.

Ordering Picture Panels

Imagine four labeled picture panels: A shows a closed empty box; B shows an open empty box; C shows an open box holding a red card; D shows a closed box holding that card. The supplied rule says open the box, insert the card, then close it, starting empty and closed. The sequence is A → B → C → D. Identify the two changing visual features—lid position and card presence—rather than sorting labels alphabetically by habit. A sequence A → C → B → D inserts the card before opening and then removes it without a stated step. The image labels and supplied transition rule, not a remembered real workflow, govern the answer.