Sign up and login workflows in No-Code - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding the purpose of sign up and login

What is the main difference between a sign up process and a login process in a typical web application?

A Sign up creates a new user account; login accesses an existing account.

B Sign up is for administrators only; login is for regular users.

C Sign up resets the password; login changes the username.

D Sign up deletes an account; login creates a new account.

💡 Hint

Think about what happens when you first use a website versus when you return.

Sign up is the process where a new user creates an account by providing details like email and password. Login is when a user who already has an account enters their credentials to access it.

📋 Factual

intermediate

Common data collected during sign up

Which of the following pieces of information is least commonly required during a standard sign up process?

A Email address

B Date of birth

C Password

D Username

💡 Hint

Consider what is essential to identify and secure an account.

Most sign up forms require an email, password, and sometimes a username. Date of birth is less commonly required unless for age verification.

🚀 Application

advanced

Handling incorrect login attempts

What is the best practice when a user enters the wrong password multiple times during login?

A Show the correct password on the screen to help the user.

B Immediately delete the user account after the first wrong password.

C Lock the account temporarily after several failed attempts to prevent unauthorized access.

D Allow unlimited attempts without any restrictions.

💡 Hint

Think about security and protecting user accounts.

Temporarily locking the account after multiple failed attempts helps prevent brute force attacks and protects user data.

🔍 Analysis

advanced

Analyzing multi-factor authentication (MFA) in login workflows

Why is multi-factor authentication (MFA) considered more secure than just using a password during login?

A Because it requires two or more verification methods, making unauthorized access harder.

B Because it lets users share their login details with others safely.

C Because it stores passwords in plain text for easy retrieval.

D Because it allows users to skip entering passwords entirely.

💡 Hint

Think about how adding extra steps can improve security.

MFA requires users to provide additional proof of identity, such as a code sent to their phone, which greatly reduces the risk of unauthorized access even if the password is compromised.

❓ Reasoning

expert

Choosing the best approach for password reset workflow

A user forgot their password and requests a reset. Which workflow step is most important to ensure security during this process?

A Display the current password on the website for the user to see.

B Allow the user to reset the password by answering any public question without verification.

C Reset the password automatically without user confirmation.

D Send a unique, time-limited link to the user's registered email to reset the password.

💡 Hint

Consider how to confirm the user's identity safely.

Sending a unique, time-limited link to the registered email ensures only the rightful owner can reset the password, protecting the account from unauthorized access.

Practice

1. What is the main purpose of a sign up process in an app or website?

easy

A. To create a new user account

B. To reset a forgotten password

C. To log out from the account

D. To update user profile information

Solution

1. Step 1: Understand the sign up process

   Sign up is the step where a new user provides details to create an account.

2. Step 2: Differentiate from other actions

   Resetting password, logging out, or updating profile happen after account creation.

3. Final Answer:

   To create a new user account -> Option A

4. Quick Check:

   Sign up = create account [OK]

Hint: Sign up means making a new account [OK]

Common Mistakes:

• Confusing sign up with login
• Thinking sign up resets password
• Mixing sign up with logout

2. Which of the following is the correct order in a typical login workflow?

easy

A. Enter password, enter username, access account, verify credentials

B. Verify credentials, enter password, enter username, access account

C. Access account, enter username, enter password, verify credentials

D. Enter username, enter password, verify credentials, access account

Solution

1. Step 1: Identify login steps

   Login starts by entering username, then password, then system checks credentials.

2. Step 2: Confirm correct sequence

   Only Enter username, enter password, verify credentials, access account follows the logical order: username, password, verify, then access.

3. Final Answer:

   Enter username, enter password, verify credentials, access account -> Option D

4. Quick Check:

   Login order = username -> password -> verify -> access [OK]

Hint: Login always starts with username then password [OK]

Common Mistakes:

• Swapping username and password order
• Verifying before entering credentials
• Accessing account before verification

3. Consider this login workflow: User enters email and password, system checks if email exists, then verifies password. What happens if the email is not found?

medium

A. System asks for password again

B. User is logged in anyway

C. User receives an error message about invalid email

D. User account is created automatically

Solution

1. Step 1: Analyze email check in login

   If the email is not found, the system cannot verify password or log in the user.

2. Step 2: Determine system response

   The system should inform the user that the email is invalid or not registered.

3. Final Answer:

   User receives an error message about invalid email -> Option C

4. Quick Check:

   Email not found = error message [OK]

Hint: No email found means login error message [OK]

Common Mistakes:

• Assuming login succeeds without email
• Thinking system retries password input
• Believing account auto-creates on login

4. A login form requires username and password. The system always accepts any username but rejects all passwords. What is the likely error?

medium

A. User session is not created

B. Password verification logic is incorrect

C. Login form does not submit data

D. Username input is missing

Solution

1. Step 1: Identify the problem in password handling

   Since all passwords are rejected, the password check logic likely has a bug.

2. Step 2: Rule out other causes

   Username is accepted, form submits data, and session creation happens after login success, so these are less likely.

3. Final Answer:

   Password verification logic is incorrect -> Option B

4. Quick Check:

   All passwords rejected = password check bug [OK]

Hint: If all passwords fail, check password verification code [OK]

Common Mistakes:

• Blaming username input when it works
• Assuming form doesn't submit without checking
• Confusing session creation with login validation

5. You want to improve security in a sign up and login workflow by adding a step that prevents automated bots from creating accounts. Which method is best to add?

hard

A. Add a CAPTCHA challenge during sign up

B. Require users to enter their phone number only

C. Allow login without password for convenience

D. Skip email verification to speed up sign up

Solution

1. Step 1: Understand bot prevention methods

   CAPTCHA challenges are designed to block automated bots by requiring human interaction.

2. Step 2: Evaluate other options

   Phone number alone doesn't stop bots, passwordless login reduces security, skipping email verification weakens account validation.

3. Final Answer:

   Add a CAPTCHA challenge during sign up -> Option A

4. Quick Check:

   CAPTCHA blocks bots effectively [OK]

Hint: CAPTCHA stops bots during sign up [OK]

Common Mistakes:

• Thinking phone number alone stops bots
• Removing passwords reduces security
• Skipping email verification weakens trust