Question 1

Validation rule

Accepted Answer

Describes what submitted input must satisfy before saving

Question 2

old()

Accepted Answer

Restores previously submitted input on a redisplayed form

Question 3

move()

Accepted Answer

Transfers an accepted uploaded file to a target folder

Question 4

getFile()

Accepted Answer

Reads an uploaded file object from the request

Question 5

_______________________________________________________________________

Accepted Answer

_______________________________________________________________________

Question 6

A controller wants to update an existing user record after validation succeeds. Which Model method is most appropriate?

Accepted Answer

update($id, $data)

Question 7

What file input form encoding is required for file uploads?

Accepted Answer

multipart/form-data

Question 8

The uploaded file's original name should always be trusted as the final server filename.

Accepted Answer

False

Question 9

Which form attribute is required when a CodeIgniter page must upload a file?

Accepted Answer

enctype="multipart/form-data"

Question 10

What does validation_show_error('title') display in a CodeIgniter view?

Accepted Answer

The validation message for the title field.

Question 11

A developer allows any uploaded file type because only images are expected. What is the best correction?

Accepted Answer

Use file validation rules for allowed image MIME types and maximum size.

Question 12

What acronym refers to Create, Read, Update, and Delete operations?

Accepted Answer

CRUD

Question 13

Validation should normally run after saving the submitted data.

Accepted Answer

False

Question 14

Why is a random server filename safer than using the uploaded file's original name?

Accepted Answer

It reduces name collisions and avoids trusting user-supplied filenames.

Question 15

A Model can be used by a controller to insert, update, retrieve, or delete records.

Accepted Answer

True

Question 16

Why should validation run before insert() or update() in a CodeIgniter controller?

Accepted Answer

It prevents invalid or unsafe input from being saved.

Question 17

A student saves uploaded avatars before checking file type and size. What is the main risk?

Accepted Answer

Unsafe or unexpected files may already be stored before rejection.

Question 18

A page successfully saves a customer but displays a blank list afterward. The controller calls return view('customers/index') without passing records. What should be checked first?

Accepted Answer

Whether customer data is retrieved and passed to the view.

Question 19

File type and file size restrictions help reduce unsafe upload behavior.

Accepted Answer

True

Question 20

A form field is named email, but the controller validates user_email. What is the most likely result?

Accepted Answer

Validation will not check the submitted email field correctly.

Question 21

What helper can print the validation error message for one field in a view?

Accepted Answer

validation_show_error()

Question 22

What is the main purpose of redisplaying old input after validation fails?

Accepted Answer

To let users correct mistakes without retyping every field.

Question 23

Which CodeIgniter helper function is commonly placed inside a form to include CSRF protection?

Accepted Answer

csrf_field()

Question 24

old() helps preserve submitted values when a form is redisplayed after validation failure.

Accepted Answer

True

Question 25

Which approach is best when a real system should avoid permanently deleting user accounts?

Accepted Answer

Use an archive or deactivation status when possible.

Question 26

A controller receives a submitted title field. Which line safely reads the posted value through CodeIgniter's request object?

Accepted Answer

$this->request->getPost('title');

Question 27

What CodeIgniter constant points to the public front-controller path, often used when saving files under public/uploads?

Accepted Answer

FCPATH

Question 28

Which validation rule set best restricts an uploaded avatar to JPG or PNG images no larger than 2 MB?

Accepted Answer

uploaded[avatar]|max_size[avatar,2048]|mime_in[avatar,image/jpg,image/jpeg,image/png]

Question 29

Which validation rule makes a form field required before the controller saves data?

Accepted Answer

required

Question 30

A CodeIgniter form that uploads files must use multipart/form-data.

Accepted Answer

True

Question 31

Why should a Delete action normally be submitted using POST rather than a normal GET link?

Accepted Answer

Destructive actions should not be triggered by simple page visits or crawlers.

Question 32

What should be saved in the database after a successful public image upload?

Accepted Answer

Only the generated filename or path needed to display the file.

Question 33

A view should normally decide by itself which database record to delete.

Accepted Answer

False

Question 34

Which CodeIgniter UploadedFile method generates a safer unique filename before moving the file?

Accepted Answer

getRandomName()

Question 35

Deleting records through a normal GET link is a safe default for production systems.

Accepted Answer

False

Question 36

Which line moves an uploaded file object named $file into the public uploads folder using a generated name?

Accepted Answer

$file->move(FCPATH . 'uploads', $newName);

Question 37

Which statement best describes CRUD?

Accepted Answer

The four record actions: create, read, update, and delete.

M3 - Web Sys

M3 - Web Sys WEB SYSTEM TECHNOLOGIES / IT0049

Question	Answer
Matching type. Match the term with the correct description.
Validation rule	Describes what submitted input must satisfy before saving
old()	Restores previously submitted input on a redisplayed form
move()	Transfers an accepted uploaded file to a target folder
getFile()	Reads an uploaded file object from the request
_______________________________________________________________________	_______________________________________________________________________
A controller wants to update an existing user record after validation succeeds. Which Model method is most appropriate?	update($id, $data)
What file input form encoding is required for file uploads?	multipart/form-data
The uploaded file's original name should always be trusted as the final server filename.	False
Which form attribute is required when a CodeIgniter page must upload a file?	enctype="multipart/form-data"
What does validation_show_error('title') display in a CodeIgniter view?	The validation message for the title field.
A developer allows any uploaded file type because only images are expected. What is the best correction?	Use file validation rules for allowed image MIME types and maximum size.
What acronym refers to Create, Read, Update, and Delete operations?	CRUD
Validation should normally run after saving the submitted data.	False
Why is a random server filename safer than using the uploaded file's original name?	It reduces name collisions and avoids trusting user-supplied filenames.
A Model can be used by a controller to insert, update, retrieve, or delete records.	True
Why should validation run before insert() or update() in a CodeIgniter controller?	It prevents invalid or unsafe input from being saved.
A student saves uploaded avatars before checking file type and size. What is the main risk?	Unsafe or unexpected files may already be stored before rejection.
A page successfully saves a customer but displays a blank list afterward. The controller calls return view('customers/index') without passing records. What should be checked first?	Whether customer data is retrieved and passed to the view.
File type and file size restrictions help reduce unsafe upload behavior.	True
A form field is named email, but the controller validates user_email. What is the most likely result?	Validation will not check the submitted email field correctly.
What helper can print the validation error message for one field in a view?	validation_show_error()
What is the main purpose of redisplaying old input after validation fails?	To let users correct mistakes without retyping every field.
Which CodeIgniter helper function is commonly placed inside a form to include CSRF protection?	csrf_field()
old() helps preserve submitted values when a form is redisplayed after validation failure.	True
Which approach is best when a real system should avoid permanently deleting user accounts?	Use an archive or deactivation status when possible.
A controller receives a submitted title field. Which line safely reads the posted value through CodeIgniter's request object?	$this->request->getPost('title');
What CodeIgniter constant points to the public front-controller path, often used when saving files under public/uploads?	FCPATH
Which validation rule set best restricts an uploaded avatar to JPG or PNG images no larger than 2 MB?	uploaded[avatar]\|max_size[avatar,2048]\|mime_in[avatar,image/jpg,image/jpeg,image/png]
Which validation rule makes a form field required before the controller saves data?	required
A CodeIgniter form that uploads files must use multipart/form-data.	True
Why should a Delete action normally be submitted using POST rather than a normal GET link?	Destructive actions should not be triggered by simple page visits or crawlers.
What should be saved in the database after a successful public image upload?	Only the generated filename or path needed to display the file.
A view should normally decide by itself which database record to delete.	False
Which CodeIgniter UploadedFile method generates a safer unique filename before moving the file?	getRandomName()
Deleting records through a normal GET link is a safe default for production systems.	False
Which line moves an uploaded file object named $file into the public uploads folder using a generated name?	$file->move(FCPATH . 'uploads', $newName);
Which statement best describes CRUD?	The four record actions: create, read, update, and delete.

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