Introduction-to-Cryptography Zertifizierungsfragen - Introduction-to-Cryptography Zertifizierungsantworten

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WGU Introduction-to-Cryptography Exam Syllabus Topics:

SectionObjectives
Applied Cryptography- Cryptographic Best Practices
- SSL/TLS Protocols
- VPN Security
- PGP and Email Encryption
Hashing and Digital Signatures- Hash Functions (MD5, SHA-1, SHA-256)
- Digital Signature Standards
- Message Authentication Codes (MAC)
Asymmetric Cryptography- Diffie-Hellman Key Exchange
- RSA Algorithm
- Public Key Infrastructure (PKI)
- Elliptic Curve Cryptography (ECC)
Cryptography Fundamentals- Cryptographic Terminology
- Symmetric vs Asymmetric Encryption
- History and Evolution of Cryptography
Symmetric Cryptography- Key Management
- Initialization Vectors (IV)
- Stream Ciphers
- Block Ciphers (AES, DES, 3DES)
Cryptanalysis and Attacks- Brute Force and Dictionary Attacks
- Social Engineering Prevention
- Common Attack Vectors

>> Introduction-to-Cryptography Zertifizierungsfragen <<

WGU Introduction-to-Cryptography Zertifizierungsantworten & Introduction-to-Cryptography Deutsch Prüfungsfragen

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WGU Introduction to Cryptography HNO1 Introduction-to-Cryptography Prüfungsfragen mit Lösungen (Q41-Q46):

41. Frage
(What is the relationship between Secure Sockets Layer (SSL) and Transport Layer Security (TLS)?)

Antwort: B

Begründung:
TLS is the modern successor to SSL. SSL (notably SSL 2.0 and SSL 3.0) was an early protocol family for securing network communications, providing encryption, integrity, and endpoint authentication for applications like HTTPS. Over time, weaknesses were discovered in SSL's design and in the cryptographic mechanisms commonly used with it. TLS was introduced as an improved, standardized evolution (starting with TLS 1.0, based on SSL 3.0 but with important fixes), and later versions (TLS 1.2 and TLS 1.3) significantly strengthened security by removing weak ciphers, improving key exchange, and tightening handshake and record protections. In practice, when people say "SSL" today, they often mean "TLS," but true SSL is deprecated and should not be used. SSL is not a replacement of TLS, and the two are not identical in security-TLS versions incorporate substantial improvements and modern cryptographic best practices. SSL is also not limited to email; it was widely used for web traffic and other protocols. Therefore, the correct relationship is that TLS replaced SSL to provide improved security.


42. Frage
(Why is it important for cryptography frameworks to adapt over time?)

Antwort: B

Begründung:
Cryptography must evolve because threats, computing capabilities, and attack techniques continuously change. Algorithms once considered safe can become vulnerable due to cryptanalysis, implementation attacks, protocol flaws, or sheer increases in available compute power. Examples include the deprecation of SHA-1 for signatures, weakening of RC4, and migration away from older TLS versions and weak cipher suites. Frameworks also need to adapt to new environments-cloud architectures, IoT deployments, mobile devices-and new adversary models, including the long-term risk posed by quantum computing to current public-key systems. Adaptation includes updating standards, increasing key sizes where needed, adopting modern primitives (AEAD modes, stronger KDFs), improving key management practices (rotation, hardware- backed storage), and refining operational guidance (certificate lifetimes, revocation strategies). A rigid structure that never changes would lock organizations into obsolete protections and accumulate risk.
Standardizing obsolete techniques or complying with outdated standards is the opposite of sound security engineering. Therefore, cryptography frameworks must adapt over time to respond to emerging threats and vulnerabilities and to maintain effective protection as the landscape evolves.


43. Frage
(Quantum computing poses a threat to which cryptographic algorithm?)

Antwort: C

Begründung:
Large-scale quantum computers threaten many widely deployed public-key algorithms because quantum algorithms can solve their underlying hard math problems efficiently. In particular, Shor's algorithm can factor large integers and compute discrete logarithms in polynomial time, which directly breaks the security assumptions of RSA (factoring) and traditional Diffie-Hellman/ECC (discrete log). That makes RSA the clearest target among the options. By comparison, symmetric algorithms like AES are affected mainly by Grover's algorithm, which provides a quadratic speedup for brute force; this can be mitigated by using larger keys (e.g., AES-256). Hash functions like SHA-256 also face Grover-style speedups for preimage search, again mitigated by output length/security margin, and collision resistance is impacted differently. ECB is a mode of operation, not a standalone algorithm, and its issues are classical (pattern leakage), not specifically quantum. Therefore, the algorithm most directly threatened by quantum computing among the choices is RSA.


44. Frage
(What are the roles of keys when using digital signatures?)

Antwort: C

Begründung:
Digital signatures provide integrity, authenticity, and typically non-repudiation by using an asymmetric key pair. The signer uses the private key to create a signature over a message (usually over a hash/digest of the message). Because the private key is kept secret, only the legitimate signer should be able to produce a valid signature. Anyone who has the corresponding public key can then validate the signature: they verify that the signature matches the message digest under the public key and that the signed data has not been altered. This is why the public key can be widely distributed (often inside an X.509 certificate) while the private key must be protected by the signer. If a public key were used to sign, anyone could forge signatures; if a private key were required for validation, only the signer could validate, defeating the purpose of public verifiability.
Therefore, the correct key roles are private key for signing and public key for signature validation.


45. Frage
(Which regulation requires organizations to implement strong encryption measures to protect credit card data?)

Antwort: B

Begründung:
For protecting credit card data, the primary compliance framework is PCI DSS (Payment Card Industry Data Security Standard). PCI DSS is an industry standard created by major card brands and administered through the PCI Security Standards Council. It sets requirements for organizations that store, process, or transmit cardholder data, including controls around network security, access control, monitoring, and cryptography.
PCI DSS explicitly addresses encryption and protection of cardholder data (for example, protecting stored cardholder data and encrypting transmission over open, public networks, and using strong cryptography and secure protocols). CCPA and GDPR are privacy regulations focused on personal data rights and governance, and while they may encourage security measures, they are not specifically the card-industry security standard for payment data. HIPAA applies to protected health information, not payment card data. Therefore, the correct answer is PCI DSS.


46. Frage
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