MCQs

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1. Which protocol is widely used within Windows environments for network authentication using a ticket-based system?
   a. Kerberos
   b. LDAP
   c. OAuth
   d. SAML
   Answer: a. Kerberosokta+2
2. What is the primary purpose of the OAuth 2.0 protocol?
   a. Authorization
   b. Encryption
   c. Authentication
   d. Ticket issuance
   Answer: a. Authorizationlinkedin+2
3. Which authentication protocol is based on exchanging XML-based assertions between an Identity Provider (IdP) and a Service Provider (SP)?
   a. SAML
   b. Kerberos
   c. LDAP
   d. RADIUS
   Answer: a. SAMLcloudknowledge+1
4. What is the core function of the Key Distribution Center (KDC) in Kerberos?
   a. Issue tickets
   b. Store passwords
   c. Encrypt traffic
   d. Manage firewalls
   Answer: a. Issue ticketsgetkisi+2
5. SAML is especially used in what kind of environment?
   a. Single Sign-On (SSO) for web applications
   b. Wireless communication
   c. File transfer encryption
   d. Disk encryption
   Answer: a. Single Sign-On (SSO) for web applicationsdeel+1
6. In which protocol do users often authenticate once and receive a token to access multiple services?
   a. SAML
   b. SSL
   c. PAP
   d. DHCP
   Answer: a. SAMLcloudknowledge+1
7. Which protocol uses a username and password for authentication and is considered insecure due to transmitting credentials in plain text?
   a. PAP
   b. Kerberos
   c. RADIUS
   d. SAML
   Answer: a. PAPtutorialspoint+1
8. What does LDAP primarily provide in an enterprise environment?
   a. Centralized authentication
   b. Data encryption
   c. Malware scanning
   d. Email relaying
   Answer: a. Centralized authenticationtrustbuilder+2
9. Which protocol allows third-party applications to access resources on behalf of a user without sharing their credentials?
   a. OAuth 2.0
   b. NTLM
   c. Kerberos
   d. SSL
   Answer: a. OAuth 2.0okta+2
10. Which authentication protocol works by periodically reauthenticating users within the same session?
    a. CHAP
    b. LDAP
    c. SAML
    d. RADIUS
    Answer: a. CHAPtutorialspoint+1
11. Which protocol is the successor to RADIUS and provides more robust AAA framework support?
    a. DIAMETER
    b. PAP
    c. SAML
    d. NTLM
    Answer: a. DIAMETERokta+1
12. What does the acronym RADIUS stand for?
    a. Remote Authentication Dial-In User Service
    b. Rapid Application Deployment In User Security
    c. Resource Allocation Domain United System
    d. Remote Application Directory Input Utility Service
    Answer: a. Remote Authentication Dial-In User Servicetrustbuilder+2
13. What protocol is commonly used with VPNs and Wi-Fi authentication in enterprise networks?
    a. RADIUS
    b. SNMP
    c. SMTP
    d. FTP
    Answer: a. RADIUSdeel+2
14. Which protocol is widely used for querying and maintaining directory services data such as user and group information?
    a. LDAP
    b. SAML
    c. Kerberos
    d. TLS
    Answer: a. LDAPgeeksforgeeks+2
15. Which protocol supports strong mutual authentication between client and server using tickets?
    a. Kerberos
    b. PAP
    c. SAML
    d. OAuth 2.0
    Answer: a. Kerberoslinkedin+2
16. What is the main purpose of two-factor authentication (2FA)?
    a. Adding a second layer to the authentication process
    b. Encrypting all data packets
    c. Disabling unused ports
    d. Deleting old credentials
    Answer: a. Adding a second layer to the authentication processloginradius+1
17. Which protocol is primarily used for authentication in Microsoft Active Directory environments?
    a. Kerberos
    b. SAML
    c. OpenID Connect
    d. FIDO2
    Answer: a. Kerberosgetkisi+1
18. What does an access token in OAuth 2.0 signify?
    a. Permission to access resources
    b. Encrypted user credentials
    c. Revoked session
    d. Firewall policy
    Answer: a. Permission to access resourcesgetkisi+1
19. What type of authentication does FIDO2 promote?
    a. Passwordless authentication
    b. Symmetric key passwords
    c. Token-based authorization
    d. Ticket-granting only
    Answer: a. Passwordless authenticationdeel
20. Which protocol uses symmetric-key cryptography and tickets to avoid sending passwords over the network?
    a. Kerberos
    b. PAP
    c. SAML
    d. OAuth 2.0
    Answer: a. Kerberosgeeksforgeeks+2
21. Which protocol uses JSON Web Tokens (JWT) as identity tokens on top of OAuth 2.0?
    a. OpenID Connect
    b. CHAP
    c. SSL
    d. RADIUS
    Answer: a. OpenID Connectcloudknowledge+1
22. What is a key characteristic of OAuth 2.0?
    a. Delegated access without password sharing
    b. Direct password verification
    c. Ticket-based mutual authentication
    d. Use of XML assertions
    Answer: a. Delegated access without password sharinglinkedin+2
23. Which protocol is commonly used for federated identity and SSO across multiple domains?
    a. SAML
    b. NTLM
    c. TACACS+
    d. PAP
    Answer: a. SAMLcloudknowledge+1
24. What does TACACS+ primarily provide in network security?
    a. AAA (Authentication, Authorization, Accounting)
    b. Email encryption
    c. DNS resolution
    d. Biometric verification
    Answer: a. AAA (Authentication, Authorization, Accounting)tutorialspoint+1
25. Which protocol is a modern successor to SAML and is widely used for login with Google or Facebook?
    a. OpenID Connect
    b. Kerberos
    c. PAP
    d. NTLM
    Answer: a. OpenID Connectdeel+1
26. What is transmitted in plain text making PAP insecure for authentication?
    a. Passwords
    b. Tickets
    c. Tokens
    d. Assertions
    Answer: a. Passwordsokta+1
27. Which protocol can be used to perform Single Sign-On (SSO) with cloud applications?
    a. SAML
    b. Telnet
    c. SMTP
    d. ICMP
    Answer: a. SAMLcloudknowledge+1
28. Which protocol uses assertion tokens signed by an Identity Provider to grant access?
    a. SAML
    b. RADIUS
    c. CHAP
    d. LDAP
    Answer: a. SAMLdeel+1
29. In what environment is Kerberos NOT well suited?
    a. Internet-based web apps
    b. Corporate intranets
    c. Windows local networks
    d. Unix/Linux enterprise environments
    Answer: a. Internet-based web appslinkedin
30. What does CHAP stand for?
    a. Challenge Handshake Authentication Protocol
    b. Certificate Header Authentication Process
    c. Central Host Access Permission
    d. Cryptographic Hash Addressing Protocol
    Answer: a. Challenge Handshake Authentication Protocoltutorialspoint+1
31. Which authentication protocol is often used with remote access dial-in services?
    a. RADIUS
    b. SAML
    c. SSL
    d. SMTP
    Answer: a. RADIUStrustbuilder+2
32. What is the main role of LDAP in authentication?
    a. Querying and managing directory information for authentication
    b. Encrypting sessions
    c. Generating digital signatures
    d. Filtering spam
    Answer: a. Querying and managing directory information for authenticationgeeksforgeeks+2
33. What protocol does OpenID Connect build upon?
    a. OAuth 2.0
    b. SAML
    c. PAP
    d. Kerberos
    Answer: a. OAuth 2.0cloudknowledge+1
34. Which protocol commonly uses asymmetric cryptography for digital signatures in authentication?
    a. SAML
    b. PAP
    c. RADIUS
    d. SSL
    Answer: a. SAMLokta+1
35. What authentication system uses a centralized directory like Active Directory or OpenLDAP?
    a. LDAP
    b. PAP
    c. CHAP
    d. SMTP
    Answer: a. LDAPtrustbuilder+2
36. What type of ticket does a user first receive when authenticating with Kerberos?
    a. Ticket Granting Ticket (TGT)
    b. Service Ticket
    c. Access Token
    d. Assertion Ticket
    Answer: a. Ticket Granting Ticket (TGT)getkisi+1
37. OAuth 2.0 is best described as:
    a. An authorization framework
    b. Network firewall
    c. Directory service
    d. File encryption protocol
    Answer: a. An authorization frameworklinkedin+2
38. What is an advantage of using Kerberos?
    a. Strong mutual authentication
    b. Use of static passwords
    c. Simplicity of setup
    d. Stateless design
    Answer: a. Strong mutual authenticationgeeksforgeeks+2
39. Which protocol is used to authorize devices on wireless networks, typically in conjunction with EAP?
    a. RADIUS
    b. SAML
    c. OAuth 2.0
    d. LDAP
    Answer: a. RADIUStrustbuilder+2
40. Which protocol supports multiple authentication methods including passwords, certificates, and tokens?
    a. RADIUS
    b. SAML
    c. PAP
    d. SMTP
    Answer: a. RADIUSokta+1
41. Which protocol became popular to facilitate enterprise SSO via browser-based access to cloud services?
    a. SAML
    b. Kerberos
    c. OAuth 2.0
    d. NTLM
    Answer: a. SAMLdeel+1
42. What is the main benefit of federated identity in SAML?
    a. Reduces the number of passwords users must remember
    b. Encrypts all web traffic
    c. Forces biometric authentication
    d. Disables remote access
    Answer: a. Reduces the number of passwords users must remembercloudknowledge+1
43. What protocol is generally considered the most insecure for authentication?
    a. PAP
    b. Kerberos
    c. SAML
    d. OAuth 2.0
    Answer: a. PAPtutorialspoint+1
44. Which protocol is closely tied with directory services like Active Directory for user authentication?
    a. LDAP
    b. OAuth 2.0
    c. SAML
    d. PAP
    Answer: a. LDAPgeeksforgeeks+2
45. What kind of protocol is NTLM?
    a. Legacy Microsoft authentication protocol
    b. Web Single Sign-On standard
    c. Certificate-based federated identity protocol
    d. Multi-factor authentication system
    Answer: a. Legacy Microsoft authentication protocolgeeksforgeeks+1
46. Why is FIDO2 recommended for modern authentication?
    a. It resists phishing and credential replay attacks
    b. It uses unencrypted passwords
    c. It is only for internal networks
    d. It is exclusive to Microsoft environments
    Answer: a. It resists phishing and credential replay attacksdeel
47. What component is used in RADIUS to store authentication information?
    a. Central database
    b. Local config file
    c. Distributed hosts
    d. Autonomous applet
    Answer: a. Central databasetrustbuilder+1
48. What protocol is most widely used for passwordless authentication?
    a. FIDO2
    b. NTLM
    c. Kerberos
    d. LDAP
    Answer: a. FIDO2deel
49. Which protocol periodically revalidates authentication during sessions to protect against replay attacks?
    a. CHAP
    b. PAP
    c. SAML
    d. OAuth 2.0
    Answer: a. CHAPtutorialspoint+1
50. Which authentication protocol enables users to log in to web applications using Google, Facebook, or Microsoft identities?
    a. OpenID Connect
    b. Kerberos
    c. RADIUS
    d. DIAMETER
    Answer: a. OpenID Connectcloudknowledge+1

1. https://www.okta.com/identity-101/authentication-protocols/
2. https://www.linkedin.com/pulse/differences-between-kerberos-saml-oauth-openid-connect-aqueel-akhter-oqxyf
3. https://www.getkisi.com/blog/authentication-protocols-overview
4. https://cloudknowledge.in/complete-guide-to-authentication-protocols-saml-oauth-oidc-kerberos-ntlm-and-ldap-explained/
5. https://www.geeksforgeeks.org/computer-networks/types-of-authentication-protocols/
6. https://www.deel.com/blog/authentication-methods-explained/
7. https://www.tutorialspoint.com/types-of-authentication-protocols
8. https://www.trustbuilder.com/en/authentication-protocols-explained/
9. https://www.loginradius.com/blog/identity/what-is-authentication
10. https://www.sanfoundry.com/cyber-security-questions-answers-security-protocols-1/
11. https://www.theknowledgeacademy.com/blog/cyber-security-mcq-and-answers/
12. https://www.sanfoundry.com/1000-cyber-security-questions-answers/
13. https://www.interviewbit.com/cyber-security-mcq/
14. https://interviewkickstart.com/blogs/articles/cyber-security-mcqs-answers
15. https://automationcommunity.com/100-mcqs-mastery-on-cybersecurity/
16. https://www.scribd.com/document/846195123/Authentication-Protocols-OAuth-SAML-OpenID-Connect-Level-2-Admin-2
17. https://testbook.com/objective-questions/mcq-on-network-security–5eea6a0939140f30f369d917
18. https://kinde.com/learn/authentication/protocols/overview/
19. https://www.techtarget.com/searchsecurity/feature/Authentication-quiz
20. https://www.blumira.com/blog/authentication-protocols-101