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Data types and structures

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Question 5

An automated weather monitoring network generates data telemetry packets with a specific code format.

The format of each telemetry packet code is structured as follows:

  • The first two characters represent the country region code (e.g., 'UK', 'US', 'FR').
  • This is followed by a colon (:).
  • The next field is a 5-character station identifier.
  • This is followed by a colon (:).
  • The next field is a 4-character sensor type code.
  • This is followed by a colon (:).
  • The final field is a 5-digit transmission sequence number.

Example valid telemetry packet codes:

  • UK:STN03:TEMP:08194
  • US:STN21:WIND:11048
  • FR:STN09:HUMI:00392

Assume a variable named packet_id stores one of these valid codes as a string.

Construct an expression, using string slicing or indexing, to extract the 4-character sensor type code from packet_id.

[3]
Markscheme

Data types and structures Questions

  1. GCSE
  2. /Computer Science
  3. /Data types and structures

44 exam-style questions on Edexcel GCSE Computer Science Data types and structures, covering Primitive and structured data types, Using variables and constants, and Manipulating strings. Each one has a worked solution and a mark scheme showing where the marks go.

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