MCQs

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1. Two-Person Integrity (TPI) is primarily designed to prevent which of the following?
   a. Single-person access to critical materials
   b. Unauthorized encryption
   c. Network congestion
   d. Key distribution errors
   Answer: acsrc.nist​
2. What does TPI stand for in cybersecurity terminology?
   a. Total Protection Infrastructure
   b. Two-Person Integrity
   c. Trusted Process Inspection
   d. Two-Phase Implementation
   Answer: bcsrc.nist​
3. The key objective of TPI is to ensure that no single individual has:
   a. Unlimited access to system logs
   b. Sole control over critical assets
   c. Freedom to design encryption algorithms
   d. Access to non-classified material
   Answer: bcsrc.nist​
4. Two-Person Integrity is mandated for handling what type of data?
   a. COMSEC keying material
   b. Public keys
   c. Wireless encryption codes
   d. Network access credentials
   Answer: acsrc.nist​
5. Which U.S. standard formally defines Two-Person Integrity?
   a. CNSSI 4009-2015
   b. FIPS 140-3
   c. ISO 27001
   d. SOC 2 Type II
   Answer: acsrc.nist​
6. Two-Person Integrity differs from Two-Person Control because the latter applies to:
   a. Nuclear Command materials
   b. Network firewalls
   c. Biometric databases
   d. Open-source projects
   Answer: acsrc.nist​
7. Two-Person Integrity requires at least how many authorized people to perform sensitive tasks?
   a. One
   b. Two
   c. Three
   d. Four
   Answer: bdrivestrike​
8. A major benefit of TPI in cybersecurity is:
   a. Automation of cryptographic keying
   b. Reduction of insider threat risks
   c. Single sign-on enhancement
   d. Bandwidth optimization
   Answer: bdrivestrike​
9. TPI originated in which environment?
   a. Military command and control
   b. Educational research
   c. E-commerce systems
   d. Medical device design
   Answer: asocket​
10. Within cryptography, TPI ensures that:
    a. Two users share a password
    b. Cryptographic materials cannot be accessed alone
    c. All encryption uses one key
    d. Signatures are automatically generated
    Answer: binformationtechniciantraining.tpub​
11. A common TPI implementation uses __________ on secure containers.
    a. Dual combination locks
    b. Digital certificates
    c. Encryption proxies
    d. Smartcards only
    Answer: ainformationtechniciantraining.tpub​
12. In modern IT, TPI can protect:
    a. Administrator accounts
    b. Physical equipment warranties
    c. Public repositories
    d. Website user comments
    Answer: acyber​
13. Dual authorization is another term synonymous with:
    a. Two-factor authentication
    b. Two-Person Integrity
    c. VPN tunnel creation
    d. Threat modeling
    Answer: bnvlpubs.nist​
14. TPI mechanisms are an extension of what principle?
    a. Least privilege
    b. Zero trust
    c. Separation of duties
    d. Access control lists
    Answer: clinkedin​
15. The Canadian Centre for Cyber Security recommends TPI for which purpose?
    a. Managing administrative privileges
    b. Setting up firewalls
    c. Encrypting wireless headers
    d. Patching virtual machines
    Answer: acyber​
16. In the context of cryptography, which NSA document includes TPI requirements?
    a. CNSSI 4005
    b. SP 800-53
    c. NIST IR 8298
    d. FIPS 197
    Answer: ansa​
17. Which activity requires TPI under COMSEC procedures?
    a. Key destruction
    b. Electronic billing
    c. Password reset
    d. Certificate issuance
    Answer: ainformationtechniciantraining.tpub​
18. The Two-Person rule stipulates that both individuals must be:
    a. Authorized and aware of procedure
    b. Part of the same department
    c. At a managerial level
    d. Technically certified in encryption
    Answer: acsrc.nist​
19. The Two-Person concept limits which security risk most directly?
    a. Insider collusion
    b. Network spamming
    c. DNS poisoning
    d. Hardware degradation
    Answer: alinkedin​
20. How does TPI differ from multi-factor authentication?
    a. It involves multiple people, not multiple methods
    b. It uses more devices
    c. It operates at a lower security layer
    d. It does not require authentication
    Answer: aveeam​
21. TPI’s two-person mechanism ensures:
    a. Verification of security operations
    b. Automatic password rotation
    c. Database encryption
    d. Multi-vendor redundancy
    Answer: acyber​
22. Implementing TPI in system administration can require:
    a. Two keys to authorize an action
    b. Audit logs to be deleted
    c. Encryption algorithms to be recompiled
    d. Password reuse
    Answer: acyber​
23. The Two-Person Integrity principle can be technically implemented using:
    a. Dual-approval workflows
    b. Email notifications
    c. Storage redundancy
    d. Proxy encryption
    Answer: aveeam​
24. Two-person control ensures continuous:
    a. Surveillance of sensitive materials
    b. Fast encryption
    c. Software installation
    d. Automated patching
    Answer: acsrc.nist​
25. Under CNSSI 4009, TPI prohibits:
    a. Single-person material handling
    b. Multi-user logins
    c. Automated cryptographic processes
    d. Key renewal cycles
    Answer: acsrc.nist​
26. Which of the following combines TPI with cryptographic key lifecycle management?
    a. Symmetric Key Management Annex
    b. Public Key Infrastructure
    c. AES Specification
    d. DES standard
    Answer: ansa​
27. A system employing TPI significantly reduces:
    a. Data integrity failures
    b. Rogue administrator actions
    c. Encryption key reuse
    d. Software updates
    Answer: blinkedin​
28. When applied to software development, TPI prevents:
    a. Unauthorized code changes
    b. Public repository access
    c. Continuous deployment
    d. Code duplication
    Answer: asocket​
29. What is a nuclear-related example of the Two-Person rule?
    a. Missile launch key coordination
    b. Wi-Fi authentication
    c. SSL handshake
    d. Certificate signing
    Answer: alinkedin​
30. Which is a similarity between “Dual Control” and TPI?
    a. Both require at least two authorized individuals
    b. Both use asymmetric keys
    c. Both mandate cybersecurity frameworks
    d. Both use private blockchains
    Answer: athorteaches​
31. In cybersecurity, TPI ensures accountability through:
    a. Shared oversight
    b. Logging reduction
    c. Dynamic routing
    d. Session caching
    Answer: aveeam​
32. A TPI procedure may involve distributing:
    a. Half passwords to separate parties
    b. Certificates in triplicate
    c. Tokens via SMS
    d. Network IDs manually
    Answer: acyber​
33. Two-Person Integrity is an example of which larger control category?
    a. Access control
    b. Encryption technique
    c. Network tunneling
    d. Auditing framework
    Answer: acyber​
34. The “need to know” principle often supports:
    a. TPI implementation
    b. Open access designs
    c. Malware analysis
    d. Hardware fix cycles
    Answer: alinkedin​
35. Which NIST publication identifies dual authorization for critical operations?
    a. NIST SP 800-172
    b. NIST SP 800-53
    c. NIST SP 800-63
    d. NIST SP 800-90
    Answer: anvlpubs.nist​
36. Two-Person Integrity is typically enforced in which area of military operations?
    a. COMSEC handling
    b. Tactical training
    c. Vehicle logistics
    d. Recruitment
    Answer: acsrc.nist​
37. The TPI model ensures cryptographic materials are stored under:
    a. Dual lock or dual authorization
    b. Single encrypted password
    c. Two firewalls
    d. Isolated routers only
    Answer: ainformationtechniciantraining.tpub​
38. The Two-Person rule in access management increases:
    a. Accountability
    b. Computational power
    c. Data redundancy
    d. VPN strength
    Answer: alinkedin​
39. Implementing TPI helps reduce:
    a. Unauthorized configuration changes
    b. Server response times
    c. Data compression failures
    d. Log file duplication
    Answer: aisland​
40. TPI is especially vital for _________ organizations.
    a. High-security or government
    b. Retail and commerce
    c. Healthcare startups
    d. Public education
    Answer: alinkedin​
41. In secure facilities, TPI prevents:
    a. Single-person entry to restricted areas
    b. Wireless interference
    c. Temperature fluctuation
    d. Signal degradation
    Answer: alinkedin​
42. Two-person systems can be used to authorize changes to:
    a. Critical system components
    b. Software licenses
    c. Application interfaces only
    d. Packet transmissions
    Answer: anvlpubs.nist​
43. The Two-Person concept reduces the risk of:
    a. Insider threat or sabotage
    b. DNS latency
    c. Server warming
    d. Data fragmentation
    Answer: anvlpubs.nist​
44. What concept complements TPI in key management operations?
    a. Split knowledge
    b. DNSSEC
    c. VPN tunneling
    d. Port isolation
    Answer: athearchitectguild​
45. Dual authorization duties are recommended to be:
    a. Rotated periodically
    b. Removed after 60 days
    c. Automated with AI
    d. Outsourced
    Answer: anvlpubs.nist​
46. In payment systems, TPI supports:
    a. PCI-DSS compliance
    b. TLS handshakes
    c. Session caching
    d. IPv6 routing
    Answer: athearchitectguild​
47. The Two-Person rule evolved historically from:
    a. Military safety controls
    b. Cloud-native architecture
    c. Banking APIs
    d. Data analytics
    Answer: asocket​
48. TPI implementation in cybersecurity emphasizes:
    a. Human collaboration and oversight
    b. Automated trust delegation
    c. Antivirus updates
    d. Packet routing behaviors
    Answer: asocket​
49. NSA-approved TPI practices begin with:
    a. Key generation and continue through destruction
    b. End-user sign-on
    c. Software patching
    d. Device inventory
    Answer: ansa​
50. The overarching goal of Two-Person Integrity is to maintain:
    a. Security integrity and accountability
    b. Network throughput
    c. Application speed
    d. Service uptime
    Answer: asocket+1​

1. https://csrc.nist.gov/glossary/term/two_person_integrity
2. https://drivestrike.com/two-person-integrity-two-heads-are-better-than-one/
3. https://socket.dev/glossary/two-person-integrity-tpi
4. http://informationtechniciantraining.tpub.com/14222/css/Two-Person-Integrity-85.htm
5. https://www.cyber.gc.ca/en/guidance/top-10-it-security-actions-no3-managing-controlling-administrative-privileges-itsm10094
6. https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-172.pdf
7. https://www.linkedin.com/pulse/separation-duties-two-person-control-principle-least-privilege-self
8. https://www.nsa.gov/Portals/75/documents/resources/everyone/csfc/capability-packages/(U)%20Symmetric%20Key%20Management%20Annex%20v2.0.pdf?ver=SUJIJStsC_cVeaoEIwp1PQ%3D%3D
9. https://www.linkedin.com/pulse/two-person-rule-access-management-enhance-security-kais
10. https://www.veeam.com/blog/separation-of-duties-cybersecurity.html
11. https://csrc.nist.gov/glossary/term/two_person_control
12. https://thorteaches.com/glossary/two-person-control/
13. https://www.cyber.gc.ca/en/guidance/how-protect-your-organization-insider-threats-itsap10003-0
14. https://www.island.io/content/compliance/nist-800-172
15. https://thearchitectguild.com/2024/03/27/split-knowledge-and-dual-control-safeguarding-your-payment-card-data/
16. https://en.wikipedia.org/wiki/Two-person_rule
17. https://www.reddit.com/r/cissp/comments/bd0onh/can_someone_tell_me_a_fuc_difference_between/
18. https://apps.dtic.mil/sti/tr/pdf/ADA404994.pdf
19. https://www.hqmc.marines.mil/Portals/137/Users/139/51/651/CMS_for_COs_Handbook_%20Final_Page_Checked_08May2017.pdf?ver=2017-08-17-121956-427
20. https://dodcio.defense.gov/Portals/0/Documents/CMMC/OrgDefinedParmsNISTSP800-171.pdf