Test Your Knowledge: TLS Security Best Practices with MCQs
TLS is crucial for internet communication security. It ensures confidentiality, integrity, and authentication between clients and servers. With cyber threats becoming more sophisticated, it's essential to understand how to configure TLS properly to protect sensitive data.
In this blog, we've compiled a series of multiple-choice questions (MCQs). These questions will test your knowledge of TLS security practices. Whether you're cyber security professional or web developer, these MCQs will solidify your grasp of TLS concepts. If you're someone wanting to enhance your understanding of internet security, they will also help you. They will also guide you towards best practices for stronger online protection.
1. What is the primary goal of using Transport Layer Security (TLS)?
a) To provide confidentiality, integrity, and authentication for network traffic
b) To increase internet speed
c) To prevent unauthorized users from accessing a server
d) To secure wireless networks
Click Here for Answer2. Which protocol is considered the predecessor of TLS?
a) HTTP
b) SSL
c) SSH
d) FTP
Click Here for Answer3. Which version of TLS is considered the most secure as of 2025?
a) TLS 1.0
b) TLS 1.1
c) TLS 1.2
d) TLS 1.3
Click Here for Answer4. What is a significant security concern with using TLS 1.0?
a) It is not supported by modern browsers
b) It lacks support for strong encryption algorithms
c) It is still widely used despite known vulnerabilities
d) It increases the load on servers
Click Here for Answer5. Which type of ciphers should be avoided in TLS configurations?
a) GCM ciphers
b) Null ciphers
c) AES ciphers
d) RSA ciphers
Click Here for Answer6. What is the recommended Diffie-Hellman group for TLS 1.3?
a) ffdhe1024
b) ffdhe2048
c) ffdhe4096
d) ffdhe8192
Click Here for Answer7. Which vulnerability is mitigated by disabling TLS compression?
a) Heartbleed
b) POODLE
c) CRIME
d) BEAST
Click Here for Answer8. What is the minimum key size recommended for private keys in TLS certificates?
a) 512 bits
b) 1024 bits
c) 2048 bits
d) 4096 bits
Click Here for Answer9. Which hashing algorithm is recommended for certificates in TLS?
a) SHA-1
b) MD5
c) SHA-256
d) SHA-512
Click Here for Answer10. In modern TLS certificates, where should the fully qualified domain name (FQDN) be stored?
a) In the CN (Common Name) field
b) In the SAN (Subject Alternative Name) field
c) In the Issuer field
d) In the Signature field
Click Here for Answer11. Which of the following is a correct configuration for a server that supports strong ciphers in TLS?
a) Enabling Null ciphers and Anonymous ciphers
b) Only enabling GCM ciphers
c) Supporting weak ciphers like RC4
d) Allowing all cipher suites
Click Here for Answer12. What is the purpose of enabling the "TLS_FALLBACK_SCSV" extension?
a) To prevent attackers from bypassing TLS version restrictions
b) To speed up the TLS handshake
c) To allow the use of weaker ciphers
d) To prevent session hijacking
Click Here for Answer13. Which protocol version does PCI DSS forbid using for TLS configurations?
a) TLS 1.1
b) TLS 1.0
c) TLS 1.2
d) TLS 1.3
Click Here for Answer14. Why is the use of wildcard certificates discouraged?
a) They are too expensive
b) They may be valid for multiple subdomains, increasing the risk of key compromise
c) They are difficult to configure
d) They reduce the site's load time
Click Here for Answer15. Which type of certificate validation involves verifying the organization's details?
a) Domain Validated (DV)
b) Organization Validated (OV)
c) Extended Validated (EV)
d) Self-signed
Click Here for Answer16. What does HTTP Strict Transport Security (HSTS) enforce?
a) Encrypts all HTTP traffic
b) Forces browsers to connect to the site only via HTTPS
c) Prevents certificate revocation
d) Prevents the use of TLS
Click Here for Answer17. What is the purpose of using the "Secure" flag for cookies?
a) To encrypt cookies
b) To ensure cookies are only sent over secure HTTPS connections
c) To prevent cookies from being cached
d) To sign cookies
Click Here for Answer18. What does the Cache-Control header do in TLS configurations?
a) It caches content for faster load times
b) It ensures sensitive data is not stored in browser or proxy caches
c) It encrypts cached data
d) It compresses cached data
Click Here for Answer19. Why should sensitive data not be cached when using TLS?
a) It reduces server load
b) Caching can expose sensitive data to unauthorized users
c) It improves network performance
d) It makes the website faster
Click Here for Answer20. In mutual TLS (mTLS), who authenticates whom?
a) Only the server authenticates the client
b) Only the client authenticates the server
c) Both the client and server authenticate each other
d) Neither the client nor the server authenticate each other
Click Here for Answer21. What is the purpose of Public Key Pinning in TLS?
a) To ensure the certificate is trusted by the browser
b) To guarantee the server’s certificate is the expected one
c) To speed up the TLS handshake
d) To reduce the number of requests made during TLS negotiation
Click Here for Answer22. Which tool is recommended for testing a TLS server’s configuration?
a) SSL Labs Server Test
b) Wireshark
c) Nmap
d) FTP Tester
Click Here for Answer23. What should be used to prevent unauthorized certificate issuance for a domain?
a) CAA records
b) EV certificates
c) Wildcard certificates
d) HTTP headers
Click Here for Answer24. What is the main reason to disable HTTP for API endpoints?
a) To support legacy clients
b) To ensure data is not intercepted by attackers
c) To speed up the API responses
d) To ensure compatibility with non-secure browsers
Click Here for Answer25. What is the recommended action if an API cannot use HTTPS?
a) Allow both HTTP and HTTPS connections
b) Only allow HTTP connections
c) Reject unencrypted HTTP connections
d) Use HTTP with encryption headers
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Disclaimer: This tutorial is for educational purpose only. Individual is solely responsible for any illegal act.
