Unit 8 Validation and verification

Unit 8 Validation and verification

By Michael Harrington

Multiple Choice

if you take your time, read and understand all the slides here - what mark should you obtain?

• 10%

• 15%

• 20%

• 100%

Multiple Select

Which are validation checks that on in this CS course?

• Number chesk

• ASCII check

• Length check

• Format check

• Type check

Open Ended

A music app contains the following code:

INPUT age

OUTPUT "You are", age, "years old"

What is output from this program if the user enters these on 3 runs:

5, 15 ,215 ?

[note: shift & enter for a NEW LINE]

Open Ended

What is the problem with the program and how can it be fixed?

(think about sensible input only)

[note: shift & enter for a NEW LINE]

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​You need to be able to

Multiple Choice

What sort of validation check is made in this algorithm?

• Type check

• Presence check

• Length check

• Range check

Open Ended

Rewrite the algorithm so that the program keeps asking the user to enter a postcode until the entry is valid

[note: shift & enter for a NEW LINE]

Open Ended

Explain what the above code does?

[note: shift & enter for a NEW LINE]

Open Ended

How could you make a length check?

[note: shift & enter for a NEW LINE]

Open Ended

Format check

How could you check a username input contains only letters?

Write the code here

INPUT Username

?

?

[note: shift & enter for a NEW LINE]

​The number 38417493 has its check digit calculated by adding each number, then taking the final digit of the total found

​

In this case, the total is ? so the check digit is ?

​

Once the data is input, the check digit is generated, If it doesn’t match the number isn’t valid

​

Multiple Choice

The number 38417493 has its check digit calculated by adding each number, then taking the final digit of the total found

​

What is the check digit?

• 9

• 8

• 7

• 6

• 0

Multiple Choice

a digit that is calculated and used to confirm if a number is valid

• Type check

• Presence check

• Format check

• Check digit

• Length check

Multiple Choice

checking that data conforms to a particular format

• Type check

• Presence check

• Format check

• Check digit

• Length check

Multiple Choice

checking that data is reasonable

• Range check

• Verification

• Validation

• Check digit

• Length check

Multiple Choice

checking that data has been entered

• Type check

• Presence check

• Format check

• Check digit

• Length check

Multiple Choice

checking data is the correct data type

• Type check

• Presence check

• Format check

• Check digit

• Length check

Multiple Choice

checking the data is the correct length

• Type check

• Presence check

• Format check

• Check digit

• Length check

Multiple Choice

checking data is between two values

• Range check

• Verification

• Validation

• Check digit

• Length check

Multiple Choice

checking that data is reasonable

• Range check

• Verification

• Validation

• Check digit

• Length check

​Study this for the next question

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