Mastering OAuth: An Authentication u0026 Authorization Quiz Quiz

1. OAuth Flow Identification

   Which OAuth 2.0 grant type is most appropriate for native mobile applications where the client secret cannot be safely stored?

   1. A. Authorization Code Grant with PKCE
   2. B. Implicit Grant
   3. C. Resource Owner Password Credentials Grant
   4. D. Client Credentials Grant
   5. E. Authrization Code Grant

2. Token Attributes

   What is the primary difference between an access token and a refresh token in OAuth 2.0?

   1. A. Access tokens are long-lived, while refresh tokens are short-lived.
   2. B. Refresh tokens are used to access protected resources directly, while access tokens are used to obtain new access tokens.
   3. C. Access tokens are short-lived and used to access protected resources, while refresh tokens are used to obtain new access tokens when the access token expires.
   4. D. Access tokens are only used for authorization, while refresh tokens are only used for authentication.
   5. E. Refresh Tokens is only used by the resource server

3. Scope Specificity

   A user grants an application the scope 'read:profile'. What permissions does this typically grant the application?

   1. A. The ability to create, read, update, and delete the user's profile.
   2. B. The ability to only read the user's profile information.
   3. C. Full administrative access to the user's account.
   4. D. The ability to post on the user's behalf.
   5. E. The ability to only delete the users profile

4. Security Vulnerabilities

   Which of the following security risks is most directly mitigated by implementing proper token validation on the resource server?

   1. A. Cross-Site Scripting (XSS)
   2. B. SQL Injection
   3. C. Token theft and replay attacks
   4. D. Denial-of-Service (DoS) attacks
   5. E. Brute Force Attacks

5. OAuth Best Practices

   Which of the following is a recommended best practice for securely implementing OAuth 2.0?

   1. A. Storing client secrets directly in the mobile application code.
   2. B. Using the Implicit Grant flow for all types of applications.
   3. C. Implementing short-lived access tokens and rotating refresh tokens.
   4. D. Allowing clients to request overly broad scopes without user consent.
   5. E. Always using HTTP instead of HTTPS for token requests