MCQs

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1. A token key in cybersecurity serves primarily as what?
   a. A user identifier
   b. A security credential granting access rights
   c. A data encryption key
   d. A network analyzer
   Answer: b. A security credential granting access rightsguptadeepak​
2. Token-based authentication allows users to verify their identity and get what in return?
   a. A password hash
   b. A unique access token
   c. A session ID
   d. A digital certificate
   Answer: b. A unique access tokenokta​
3. Which of the following is a key characteristic of tokens in cybersecurity?
   a. Statelessness
   b. Random storage
   c. Infinite lifetime
   d. Reversible encryption
   Answer: a. Statelessnessguptadeepak​
4. The most common type of stateless authentication token is:
   a. X.509 certificate
   b. Session token
   c. JSON Web Token (JWT)
   d. MAC address
   Answer: c. JSON Web Token (JWT)examradar​
5. Hardware tokens typically provide multifactor authentication using:
   a. Passwords
   b. Biometrics and random codes
   c. Encryption algorithms only
   d. RFID-only devices
   Answer: b. Biometrics and random codescdw​
6. A software token is usually implemented as:
   a. A USB key
   b. A smartphone authenticator app
   c. A printed keycard
   d. A firewall rule
   Answer: b. A smartphone authenticator apptencentcloud​
7. Which protocol standard defines JSON Web Tokens?
   a. RFC 791
   b. RFC 4226
   c. RFC 7519
   d. RFC 6241
   Answer: c. RFC 7519jwt​
8. Tokens that generate passwords based on time are using which algorithm?
   a. HOTP
   b. TOTP
   c. SHA-1
   d. Diffie-Hellman
   Answer: b. TOTPupguard​
9. The HMAC-based One-Time Password (HOTP) algorithm works using:
   a. Random salt
   b. Counter increments
   c. User biometrics
   d. IPv6 addressing
   Answer: b. Counter incrementscertmike​
10. Which encryption method is recommended for signing JWTs?
    a. MD5
    b. HMAC with SHA-256 or RSA
    c. SHA-1
    d. AES-128 only
    Answer: b. HMAC with SHA-256 or RSAsophos​
11. What is a key operational difference between access tokens and refresh tokens?
    a. Access tokens are longer-lived
    b. Refresh tokens are short-lived
    c. Refresh tokens are longer-lived and used to obtain new access tokens
    d. Both are identical in use
    Answer: c. Refresh tokens are longer-lived and used to obtain new access tokenspermit​
12. A bearer token allows access to a system because:
    a. It contains the user’s password
    b. Possession alone proves authorization
    c. It is hardware-encrypted
    d. It contains a digital certificate
    Answer: b. Possession alone proves authorizationguptadeepak​
13. Which of the following is a vulnerability in OAuth tokens?
    a. XSS exploitation
    b. Buffer overflow
    c. Rootkit injection
    d. DNS hijacking
    Answer: a. XSS exploitationappomni​
14. Consent phishing attacks commonly target which type of tokens?
    a. Refresh tokens
    b. OAuth tokens
    c. Time-based tokens
    d. Hardware tokens
    Answer: b. OAuth tokensappomni​
15. What prevents replay attacks in token authentication?
    a. Token revocation
    b. Token encryption
    c. Token expiration time
    d. Multi-server caching
    Answer: c. Token expiration timesophos​
16. A token key transmitted without HTTPS can result in:
    a. Token bloat
    b. Man-in-the-middle attack
    c. Token refresh
    d. Stronger encryption
    Answer: b. Man-in-the-middle attacklegitsecurity​
17. The stateless nature of tokens eliminates the need for:
    a. Session storage on the server
    b. Client authentication
    c. Key generation
    d. TLS protocols
    Answer: a. Session storage on the serverguptadeepak​
18. Access tokens in OAuth define which of the following?
    a. User password
    b. Scope of access
    c. API version
    d. Network settings
    Answer: b. Scope of accesspermit​
19. One key reason to rotate API keys regularly is:
    a. Improve caching
    b. Limit lifespan of compromised keys
    c. Increase encryption speed
    d. Synchronize tokens
    Answer: b. Limit lifespan of compromised keyslegitsecurity​
20. Which of these is an example of a hardware token?
    a. Google Authenticator
    b. RSA SecurID fob
    c. Email link
    d. JSON file
    Answer: b. RSA SecurID fobcdw​
21. Why should API keys not be embedded in client-side code?
    a. They slow parsing
    b. They can be easily exposed
    c. They reduce functionality
    d. They conflict with cookies
    Answer: b. They can be easily exposedlegitsecurity​
22. Which token type carries user identity information?
    a. ID Token
    b. API Key
    c. Refresh Token
    d. SSL Token
    Answer: a. ID Tokenguptadeepak​
23. The key advantage of token-based over session-based authentication is:
    a. Simplicity
    b. Statelessness and scalability
    c. Memory consumption
    d. Local encryption
    Answer: b. Statelessness and scalabilityguptadeepak​
24. Token revocation can be achieved using:
    a. Salting
    b. Token revocation lists
    c. Encryption updates
    d. MAC filtering
    Answer: b. Token revocation listssophos​
25. In data tokenization, sensitive data is replaced with what?
    a. Encrypted payload
    b. Non-sensitive token
    c. Hashed checksum
    d. User signature
    Answer: b. Non-sensitive tokendigitalguardian​
26. What defines the validity period of a token?
    a. Token ID
    b. Expiration claim
    c. Payload content
    d. Signature algorithm
    Answer: b. Expiration claimsophos​
27. In OAuth, which component issues tokens?
    a. Resource server
    b. Authorization server
    c. Client application
    d. Firewall
    Answer: b. Authorization serverpermit​
28. A token compromised in transmission usually results from lack of:
    a. Encryption
    b. Logging
    c. Authentication
    d. Database indexing
    Answer: a. Encryptionlegitsecurity​
29. JWT payload data is:
    a. Always encrypted
    b. Base64URL encoded
    c. Double encrypted
    d. None of these
    Answer: b. Base64URL encodedjwt​
30. What ensures the integrity of a JWT?
    a. Digital signature
    b. Transport protocol
    c. Proxy servers
    d. Cookie encryption
    Answer: a. Digital signatureexamradar​
31. Why should sensitive data not be included in JWTs?
    a. Tokens are often stored on the client side
    b. Tokens expire quickly
    c. It increases token size
    d. It’s not standard practice
    Answer: a. Tokens are often stored on the client sidesophos​
32. Which token type regenerates user access without reauthentication?
    a. Access token
    b. Refresh token
    c. API key
    d. Hash token
    Answer: b. Refresh tokenpermit​
33. What type of token is primarily used for granting temporary API access?
    a. OAuth Access Token
    b. Refresh Token
    c. Token ID
    d. Hardware Token
    Answer: a. OAuth Access Tokenpermit​
34. An expired OAuth token requires which process for renewal?
    a. Session refresh
    b. Token refresh using refresh token
    c. Password update
    d. None of the above
    Answer: b. Token refresh using refresh tokenpermit​
35. The term “Bearer Token” refers to:
    a. Tokens requiring encryption keys
    b. Tokens granting access solely by possession
    c. Tokens with passwords
    d. Hardware-based certificates
    Answer: b. Tokens granting access solely by possessionguptadeepak​
36. Which is not a property of token-based authentication?
    a. Tokens are portable
    b. Tokens are time-bound
    c. Tokens require constant connectivity
    d. Tokens can be revoked
    Answer: c. Tokens require constant connectivityguptadeepak​
37. In MFA systems, tokens usually represent:
    a. Something the user knows
    b. Something the user has
    c. Something the user is
    d. System resource
    Answer: b. Something the user hastencentcloud​
38. The process of exchanging credentials for a token occurs during:
    a. Authorization phase
    b. Encryption phase
    c. Networking phase
    d. Storage phase
    Answer: a. Authorization phaseloginradius​
39. Key management best practices include:
    a. Disabling unused keys
    b. Hardcoding them into scripts
    c. Storing them in frontend apps
    d. Ignoring rotation schedules
    Answer: a. Disabling unused keyslegitsecurity​
40. A “Honeytoken” is:
    a. A fake token for attack detection
    b. A time-limited access token
    c. A security algorithm
    d. A user credential
    Answer: a. A fake token for attack detectionlegitsecurity​
41. Access tokens usually expire after how long?
    a. Indefinitely
    b. A few hours or days
    c. One year
    d. Only if revoked
    Answer: b. A few hours or dayspermit​
42. What method ensures secure transmission of tokens over networks?
    a. JSON encoding
    b. HTTPS
    c. Base64
    d. Cleartext TCP
    Answer: b. HTTPSlegitsecurity​
43. A connected token requires:
    a. RFID input
    b. Host device connection via USB
    c. Wi-Fi connectivity
    d. Optical scanning
    Answer: b. Host device connection via USBcdw​
44. Disconnected hardware tokens operate by:
    a. Generating PINs and codes locally
    b. Relying on cloud key storage
    c. Wireless synchronization
    d. Static password caching
    Answer: a. Generating PINs and codes locallycdw​
45. A primary advantage of token-based sessions is:
    a. Minimal server storage
    b. Better user analytics
    c. Offline accessibility only
    d. Easier cookie handling
    Answer: a. Minimal server storageguptadeepak​
46. When a token expires, the typical mitigation method is:
    a. Delete cookies
    b. Use a refresh token
    c. Restart the browser
    d. Flush DNS
    Answer: b. Use a refresh tokenpermit​
47. Why are tokens preferred for API access?
    a. They centralize access control
    b. They bypass authentication
    c. They eliminate encryption
    d. They work only offline
    Answer: a. They centralize access controlinfisical​
48. An example of threat mitigation for stolen tokens is:
    a. Short token lifetimes
    b. Long expiration periods
    c. Client-side exposure
    d. Static token generation
    Answer: a. Short token lifetimessophos​
49. OAuth tokens should never be shared because:
    a. They identify the user and grant resource access
    b. They reset passwords
    c. They store no user info
    d. They improve speed
    Answer: a. They identify the user and grant resource accessappomni​
50. The fundamental idea of token key security is to:
    a. Replace static credentials with dynamic, verifiable tokens
    b. Store passwords securely
    c. Encrypt databases
    d. Build larger RSA keys
    Answer: a. Replace static credentials with dynamic, verifiable tokens.okta+1​

1. https://guptadeepak.com/all-about-authentication-and-authorization-tokens-a-comprehensive-guide/
2. https://www.okta.com/identity-101/what-is-token-based-authentication/
3. https://examradar.com/authentication-token-security-in-authentication-attacks-mcqs/
4. https://www.cdw.com/content/cdw/en/articles/security/hard-tokens-vs-soft-tokens.html
5. https://www.tencentcloud.com/techpedia/105230
6. https://jwt.io/introduction
7. https://www.upguard.com/blog/hard-tokens
8. https://certmike.com/practice-test-question-authentication-tokens/
9. https://www.sophos.com/en-us/cybersecurity-explained/JSON-web-tokens
10. https://www.permit.io/blog/oauth-tokens-definitive-guide
11. https://appomni.com/blog/oauth-token-what-it-is-how-it-works-and-its-vulnerabilities/
12. https://www.legitsecurity.com/aspm-knowledge-base/api-key-security-best-practices
13. https://www.digitalguardian.com/blog/what-data-tokenization-key-concepts-and-benefits
14. https://www.loginradius.com/blog/identity/what-is-token-authentication
15. https://infisical.com/blog/api-key-management
16. https://www.techtarget.com/searchsecurity/definition/security-token
17. https://en.wikipedia.org/wiki/Security_token
18. https://www.fortinet.com/resources/cyberglossary/authentication-token
19. https://examradar.com/authentication-tokens-and-access-controls-in-web-security-mcqs/
20. https://auth0.com/blog/why-migrate-from-api-keys-to-oauth2-access-tokens/