ECCouncil Updated 312-50v13 Exam Questions and Answers by rafi

The correct answer is C. Sequential Tokens.

The scenario states that session identifiers contain constant portions and other portions that change in a predictable progression. The tester can anticipate future valid identifiers by analyzing an incremental pattern. That is the defining characteristic of sequential token generation.

CEH web application material identifies session token prediction as a session management attack used to impersonate legitimate users when predictable session values can be guessed or derived .

Option A is incorrect because small token space means there are too few possible token values, making brute-force guessing easier.

Option B is incorrect because timestamp-based tokens are derived mainly from time values. The scenario emphasizes an incremental sequence, not direct timestamp derivation.

Option D is incorrect because a weak PRNG may produce predictable values, but the question specifically describes a sequential pattern.

Therefore, the best answer is C. Sequential Tokens.

The correct answer is C. Encrypt stored data with quantum-resistant algorithms.

The question asks for a mitigation that directly addresses cryptographic resilience for stored data. If future quantum computers can break currently deployed public-key schemes, then the appropriate defense is to migrate protected data and key-establishment designs toward post-quantum or quantum-resistant cryptographic algorithms.

CEH cryptography material explains that cryptographic attacks attempt to recover encryption keys and that weak encryption algorithms may not be resistant enough against cryptographic attacks . In this scenario, the risk is not network exposure or poor coding practice; it is the future strength of the cryptographic algorithm itself.

Option A. Use quantum-specific firewalls is incorrect because firewalls do not protect already encrypted archives from cryptanalytic key recovery.

Option B. Break data into fragments and distribute it across multiple locations may reduce concentration risk, but it does not solve the weakness of an encryption algorithm vulnerable to quantum cryptanalysis.

Option D. Include quantum-resistance checks in SDLC and code review processes is useful as a governance practice, but it does not directly protect the stored archives unless the cryptography is actually changed.

Option C. Encrypt stored data with quantum-resistant algorithms is correct because it directly mitigates the future decryption risk.

Therefore, the best answer is C. Encrypt stored data with quantum-resistant algorithms.

CEH covers classical cryptanalytic attacks, including linear cryptanalysis, which uses statistical correlations between plaintext and ciphertext to infer bits of the secret key. If a cipher leaks structural patterns across many data samples, linear approximations can be computed to break the cipher.

CEH v13 explains that ARP poisoning (also known as ARP spoofing) occurs when an attacker sends forged ARP replies across the network to associate their MAC address with multiple IP addresses, tricking hosts into sending traffic through the attacker’s machine. This results in routing inconsistencies, intermittent connectivity, failed logins, and degraded intranet performance—exactly the symptoms described. ARP poisoning typically involves unsolicited ARP replies, which overwrite legitimate ARP cache entries. CEH emphasizes that ARP-based attacks are common on LANs because ARP lacks authentication, allowing attackers to impersonate gateways or key hosts. DHCP snooping misconfigurations (Option B) affect IP allocation, not ARP mappings. Legitimate ARP refreshes (Option C) are request-based and do not involve flooding unsolicited replies. Port security restrictions (Option D) block MAC anomalies, not create them. Therefore, ARP poisoning is the correct root cause.