Every smart-meter device ID registered on a utility network must follow a specific format. The format consists of three letters, followed by four digits, followed by a single letter. For example, "MTR9012A" and "mtr9012a" are valid device IDs.
Complete the table below to show two different validation checks (other than a pattern check) and a piece of test data that would be caught (rejected) by each check.
The first validation check has been done for you as an example. In the pattern format, the letter 'L' represents a letter (A-Z or a-z) and the letter 'N' represents a number (0-9).
| Validation check | Test data |
|---|---|
| Pattern check ("LLLNNNNL") | "1TR9012A" |
| [1] | [2] |
| [3] | [4] |
25 exam-style questions on Edexcel GCSE Computer Science Input/output, covering Accepting and responding to user input, Reading and writing CSV text files, Implementing validation, and Implementing authentication. Each one has a worked solution and a mark scheme showing where the marks go.