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Exam Code: 312-50v13

Exam Name Certified Ethical Hacker v13

Certification Provider: ECCouncil

Corresponding Certification: CEH

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ECCouncil 312-50v13 Practice Test 77

Question 760

At Brookside Manufacturing, the industrial security team is conducting a plant safety and IT security assessment under requirements for production continuity and controlled test windows. An independent validation is requested for the original problem: A cloud incident reviewer sees a suspicious credential used from an unusual location but lacks an inventory of what resources the token can access. Which result BEST demonstrates successful remediation?

  1. The compromised principal is disabled or constrained and the review identifies all affected authorized resources.
  2. The public service remains available while arbitrary external clients cannot reach the administrative port.
  3. Data-flow evidence confirms approved regions for primary data and disaster-recovery copies.
  4. An anonymous test cannot list or read confidential objects and sanctioned public assets remain accessible through reviewed policy.

Explanation

Correct Answer

A:

The compromised principal is disabled or constrained and the review identifies all affected authorized resources. The observable result demonstrates that the documented condition, A cloud incident reviewer sees a suspicious credential used from an unusual location but lacks an inventory of what resources the token can access. has been addressed. The planned remediation is: Map the credential to its active principal, granted roles, recent use and revocation path before scoped containment. This is a stronger validation than a saved ticket or unverified claim by Brookside Manufacturing.

Incorrect Answers

B:

The public service remains available while arbitrary external clients cannot reach the administrative port. That observation would verify another scenario: A cloud virtual machine hosts an external service but also exposes SSH administration to the entire internet. The corrective step for that other scenario is: Restrict management ingress to approved access paths and enable auditable privileged authentication. But Brookside Manufacturing is evaluating: A cloud incident reviewer sees a suspicious credential used from an unusual location but lacks an inventory of what resources the token can access. The necessary outcome is: The compromised principal is disabled or constrained and the review identifies all affected authorized resources.

C:

Data-flow evidence confirms approved regions for primary data and disaster-recovery copies. That observation would verify another scenario: A cloud application serves customer records in several regions without checking where regulated personal information may legally reside. The corrective step for that other scenario is: Apply data-classification and residency requirements to storage, backups, replicas and logging paths. But Brookside Manufacturing is evaluating: A cloud incident reviewer sees a suspicious credential used from an unusual location but lacks an inventory of what resources the token can access. The necessary outcome is: The compromised principal is disabled or constrained and the review identifies all affected authorized resources.

D:

An anonymous test cannot list or read confidential objects and sanctioned public assets remain accessible through reviewed policy. That observation would verify another scenario: A cloud object storage container allows anonymous listing because it was created with a public access template. The corrective step for that other scenario is: Enforce private access by default, explicit policy review and organization-level public-exposure guardrails. But Brookside Manufacturing is evaluating: A cloud incident reviewer sees a suspicious credential used from an unusual location but lacks an inventory of what resources the token can access. The necessary outcome is: The compromised principal is disabled or constrained and the review identifies all affected authorized resources.

Question 761

At Silvercrest University, the campus cyber defense team is conducting an approved research-network assessment under requirements for governed research assets and minimal data collection. The authorized review identifies: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. Which action BEST addresses the documented security gap?

  1. Use a random symmetric data-encryption key and protect it with an appropriate public-key or key-agreement mechanism.
  2. Protect encryption keys with a managed key vault or HSM and enforce separate access and rotation controls.
  3. Use an authenticated digital signature or message-authentication mechanism where sender authenticity is required.
  4. Renew the appropriate certificate and verify signature validity, chain, and trusted timestamp policy.

Explanation

Correct Answer

B:

Protect encryption keys with a managed key vault or HSM and enforce separate access and rotation controls. This directly addresses the authorized assessment finding: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. The Silvercrest University team should verify the outcome rather than treat a configuration edit as proof. Acceptance evidence: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

Incorrect Answers

A:

Use a random symmetric data-encryption key and protect it with an appropriate public-key or key-agreement mechanism. This is an appropriate control for a different issue: A payment service uses RSA encryption directly on large files rather than a modern hybrid-encryption design. The Silvercrest University finding instead concerns: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. It does not demonstrate the required correction. The decisive test remains: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

C:

Use an authenticated digital signature or message-authentication mechanism where sender authenticity is required. This is an appropriate control for a different issue: A file-transfer workflow hashes files with SHA-256 and concludes that this alone proves who sent the file. The Silvercrest University finding instead concerns: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. It does not demonstrate the required correction. The decisive test remains: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

D:

Renew the appropriate certificate and verify signature validity, chain, and trusted timestamp policy. This is an appropriate control for a different issue: A company signs email using an expired certificate and assumes recipients will continue to trust the signature indefinitely. The Silvercrest University finding instead concerns: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. It does not demonstrate the required correction. The decisive test remains: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

Question 762

At Silvercrest University, the campus cyber defense team is conducting an approved research-network assessment under requirements for governed research assets and minimal data collection. Following the approved correction, auditors require proof that: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. Which result BEST demonstrates successful remediation?

  1. The device rotates to the new key and a verified authorized recovery procedure restores access successfully.
  2. Large files encrypt efficiently while only the intended recipient can recover the protected symmetric key.
  3. An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.
  4. A test harness confirms nonce uniqueness and altered ciphertext fails authentication.

Explanation

Correct Answer

C:

An unprivileged user cannot retrieve key material even when able to read ordinary application configuration. The observable result demonstrates that the documented condition, An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. has been addressed. The planned remediation is: Protect encryption keys with a managed key vault or HSM and enforce separate access and rotation controls. This is a stronger validation than a saved ticket or unverified claim by Silvercrest University.

Incorrect Answers

A:

The device rotates to the new key and a verified authorized recovery procedure restores access successfully. That observation would verify another scenario: An administrator rotates a disk-encryption key without preserving recovery policy and makes a test laptop unable to unlock its data. The corrective step for that other scenario is: Plan protected recovery escrow and test key lifecycle operations before enforcing device-wide rotation. But Silvercrest University is evaluating: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. The necessary outcome is: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

B:

Large files encrypt efficiently while only the intended recipient can recover the protected symmetric key. That observation would verify another scenario: A payment service uses RSA encryption directly on large files rather than a modern hybrid-encryption design. The corrective step for that other scenario is: Use a random symmetric data-encryption key and protect it with an appropriate public-key or key-agreement mechanism. But Silvercrest University is evaluating: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. The necessary outcome is: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

D:

A test harness confirms nonce uniqueness and altered ciphertext fails authentication. That observation would verify another scenario: A database uses a fixed initialization vector for repeated encryption of confidential records with a mode that requires unique nonces. The corrective step for that other scenario is: Use an authenticated encryption scheme with safely generated non-reused nonces and protected keys. But Silvercrest University is evaluating: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. The necessary outcome is: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

Question 763

At Highland Education, the training platform security team is conducting a permitted education-cloud audit under requirements for identity integrity and uninterrupted classes. Assessors report the following documented condition: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. Which action BEST addresses the documented security gap?

  1. Use an authenticated digital signature or message-authentication mechanism where sender authenticity is required.
  2. Combine confidentiality controls with isolated immutable backup retention and verified recovery testing.
  3. Use a memory-hard password hashing mechanism with unique salts and an appropriate work factor.
  4. Protect encryption keys with a managed key vault or HSM and enforce separate access and rotation controls.

Explanation

Correct Answer

D:

Protect encryption keys with a managed key vault or HSM and enforce separate access and rotation controls. This directly addresses the authorized assessment finding: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. The Highland Education team should verify the outcome rather than treat a configuration edit as proof. Acceptance evidence: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

Incorrect Answers

A:

Use an authenticated digital signature or message-authentication mechanism where sender authenticity is required. This is an appropriate control for a different issue: A file-transfer workflow hashes files with SHA-256 and concludes that this alone proves who sent the file. The Highland Education finding instead concerns: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. It does not demonstrate the required correction. The decisive test remains: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

B:

Combine confidentiality controls with isolated immutable backup retention and verified recovery testing. This is an appropriate control for a different issue: A team assumes that encrypting a backup makes its deletion by ransomware impossible and therefore performs no restore drills. The Highland Education finding instead concerns: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. It does not demonstrate the required correction. The decisive test remains: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

C:

Use a memory-hard password hashing mechanism with unique salts and an appropriate work factor. This is an appropriate control for a different issue: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. The Highland Education finding instead concerns: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. It does not demonstrate the required correction. The decisive test remains: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

Question 764

At Highland Education, the training platform security team is conducting a permitted education-cloud audit under requirements for identity integrity and uninterrupted classes. The team now needs objective retest evidence for: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. Which result BEST demonstrates successful remediation?

  1. An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.
  2. A newly signed message validates under the current trust chain and invalid signatures are reported clearly.
  3. Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.
  4. The client rejects an untrusted or wrong-name test certificate while accepting the legitimate service certificate.

Explanation

Correct Answer

A:

An unprivileged user cannot retrieve key material even when able to read ordinary application configuration. The observable result demonstrates that the documented condition, An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. has been addressed. The planned remediation is: Protect encryption keys with a managed key vault or HSM and enforce separate access and rotation controls. This is a stronger validation than a saved ticket or unverified claim by Highland Education.

Incorrect Answers

B:

A newly signed message validates under the current trust chain and invalid signatures are reported clearly. That observation would verify another scenario: A company signs email using an expired certificate and assumes recipients will continue to trust the signature indefinitely. The corrective step for that other scenario is: Renew the appropriate certificate and verify signature validity, chain, and trusted timestamp policy. But Highland Education is evaluating: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. The necessary outcome is: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

C:

Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain. That observation would verify another scenario: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. The corrective step for that other scenario is: Use a memory-hard password hashing mechanism with unique salts and an appropriate work factor. But Highland Education is evaluating: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. The necessary outcome is: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

D:

The client rejects an untrusted or wrong-name test certificate while accepting the legitimate service certificate. That observation would verify another scenario: A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. The corrective step for that other scenario is: Validate the full certificate chain, identity and validity interval against trusted roots rather than ignoring verification errors. But Highland Education is evaluating: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. The necessary outcome is: An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

Question 765

At Harborline Logistics, the warehouse security team is conducting a contracted distribution-system assessment under requirements for scanner uptime and controlled supplier access. The control assessment finds: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. Which action BEST addresses the documented security gap?

  1. Use a memory-hard password hashing mechanism with unique salts and an appropriate work factor.
  2. Use an authenticated digital signature or message-authentication mechanism where sender authenticity is required.
  3. Validate the full certificate chain, identity and validity interval against trusted roots rather than ignoring verification errors.
  4. Combine confidentiality controls with isolated immutable backup retention and verified recovery testing.

Explanation

Correct Answer

A:

Use a memory-hard password hashing mechanism with unique salts and an appropriate work factor. This directly addresses the authorized assessment finding: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. The Harborline Logistics team should verify the outcome rather than treat a configuration edit as proof. Acceptance evidence: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

Incorrect Answers

B:

Use an authenticated digital signature or message-authentication mechanism where sender authenticity is required. This is an appropriate control for a different issue: A file-transfer workflow hashes files with SHA-256 and concludes that this alone proves who sent the file. The Harborline Logistics finding instead concerns: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. It does not demonstrate the required correction. The decisive test remains: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

C:

Validate the full certificate chain, identity and validity interval against trusted roots rather than ignoring verification errors. This is an appropriate control for a different issue: A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. The Harborline Logistics finding instead concerns: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. It does not demonstrate the required correction. The decisive test remains: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

D:

Combine confidentiality controls with isolated immutable backup retention and verified recovery testing. This is an appropriate control for a different issue: A team assumes that encrypting a backup makes its deletion by ransomware impossible and therefore performs no restore drills. The Harborline Logistics finding instead concerns: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. It does not demonstrate the required correction. The decisive test remains: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

Question 766

At Harborline Logistics, the warehouse security team is conducting a contracted distribution-system assessment under requirements for scanner uptime and controlled supplier access. An independent validation is requested for the original problem: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. Which result BEST demonstrates successful remediation?

  1. A test harness confirms nonce uniqueness and altered ciphertext fails authentication.
  2. Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.
  3. A simulated loss restores the correct version of data from a protected backup without relying on an exposed production key.
  4. An unprivileged user cannot retrieve key material even when able to read ordinary application configuration.

Explanation

Correct Answer

B:

Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain. The observable result demonstrates that the documented condition, A developer uses an unsalted fast checksum function to store user passwords in the authentication database. has been addressed. The planned remediation is: Use a memory-hard password hashing mechanism with unique salts and an appropriate work factor. This is a stronger validation than a saved ticket or unverified claim by Harborline Logistics.

Incorrect Answers

A:

A test harness confirms nonce uniqueness and altered ciphertext fails authentication. That observation would verify another scenario: A database uses a fixed initialization vector for repeated encryption of confidential records with a mode that requires unique nonces. The corrective step for that other scenario is: Use an authenticated encryption scheme with safely generated non-reused nonces and protected keys. But Harborline Logistics is evaluating: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. The necessary outcome is: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

C:

A simulated loss restores the correct version of data from a protected backup without relying on an exposed production key. That observation would verify another scenario: A team assumes that encrypting a backup makes its deletion by ransomware impossible and therefore performs no restore drills. The corrective step for that other scenario is: Combine confidentiality controls with isolated immutable backup retention and verified recovery testing. But Harborline Logistics is evaluating: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. The necessary outcome is: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

D:

An unprivileged user cannot retrieve key material even when able to read ordinary application configuration. That observation would verify another scenario: An application encrypts customer data but stores the encryption key in the same publicly readable configuration file. The corrective step for that other scenario is: Protect encryption keys with a managed key vault or HSM and enforce separate access and rotation controls. But Harborline Logistics is evaluating: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. The necessary outcome is: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

Question 767

At Maplewood Schools, the district information security team is conducting an approved campus-connectivity review under requirements for protection of learner records. The authorized review identifies: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. Which action BEST addresses the documented security gap?

  1. Use an authenticated digital signature or message-authentication mechanism where sender authenticity is required.
  2. Use a random symmetric data-encryption key and protect it with an appropriate public-key or key-agreement mechanism.
  3. Combine confidentiality controls with isolated immutable backup retention and verified recovery testing.
  4. Use a memory-hard password hashing mechanism with unique salts and an appropriate work factor.

Explanation

Correct Answer

D:

Use a memory-hard password hashing mechanism with unique salts and an appropriate work factor. This directly addresses the authorized assessment finding: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. The Maplewood Schools team should verify the outcome rather than treat a configuration edit as proof. Acceptance evidence: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

Incorrect Answers

A:

Use an authenticated digital signature or message-authentication mechanism where sender authenticity is required. This is an appropriate control for a different issue: A file-transfer workflow hashes files with SHA-256 and concludes that this alone proves who sent the file. The Maplewood Schools finding instead concerns: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. It does not demonstrate the required correction. The decisive test remains: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

B:

Use a random symmetric data-encryption key and protect it with an appropriate public-key or key-agreement mechanism. This is an appropriate control for a different issue: A payment service uses RSA encryption directly on large files rather than a modern hybrid-encryption design. The Maplewood Schools finding instead concerns: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. It does not demonstrate the required correction. The decisive test remains: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

C:

Combine confidentiality controls with isolated immutable backup retention and verified recovery testing. This is an appropriate control for a different issue: A team assumes that encrypting a backup makes its deletion by ransomware impossible and therefore performs no restore drills. The Maplewood Schools finding instead concerns: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. It does not demonstrate the required correction. The decisive test remains: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

Question 768

At Maplewood Schools, the district information security team is conducting an approved campus-connectivity review under requirements for protection of learner records. Following the approved correction, auditors require proof that: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. Which result BEST demonstrates successful remediation?

  1. A simulated loss restores the correct version of data from a protected backup without relying on an exposed production key.
  2. A test harness confirms nonce uniqueness and altered ciphertext fails authentication.
  3. Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.
  4. A protocol scan rejects obsolete handshakes while approved internal applications negotiate supported cipher suites.

Explanation

Correct Answer

C:

Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain. The observable result demonstrates that the documented condition, A developer uses an unsalted fast checksum function to store user passwords in the authentication database. has been addressed. The planned remediation is: Use a memory-hard password hashing mechanism with unique salts and an appropriate work factor. This is a stronger validation than a saved ticket or unverified claim by Maplewood Schools.

Incorrect Answers

A:

A simulated loss restores the correct version of data from a protected backup without relying on an exposed production key. That observation would verify another scenario: A team assumes that encrypting a backup makes its deletion by ransomware impossible and therefore performs no restore drills. The corrective step for that other scenario is: Combine confidentiality controls with isolated immutable backup retention and verified recovery testing. But Maplewood Schools is evaluating: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. The necessary outcome is: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

B:

A test harness confirms nonce uniqueness and altered ciphertext fails authentication. That observation would verify another scenario: A database uses a fixed initialization vector for repeated encryption of confidential records with a mode that requires unique nonces. The corrective step for that other scenario is: Use an authenticated encryption scheme with safely generated non-reused nonces and protected keys. But Maplewood Schools is evaluating: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. The necessary outcome is: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

D:

A protocol scan rejects obsolete handshakes while approved internal applications negotiate supported cipher suites. That observation would verify another scenario: An engineer selects an obsolete cryptographic protocol for internal traffic because the network is not reachable directly from the internet. The corrective step for that other scenario is: Require approved modern TLS configurations on internal services and phase out deprecated algorithms. But Maplewood Schools is evaluating: A developer uses an unsalted fast checksum function to store user passwords in the authentication database. The necessary outcome is: Two identical test passwords produce different stored verifiers and no plaintext or fast unsalted hashes remain.

Question 769

At Timberline Foods, the supply-chain assurance team is conducting a coordinated processing-plant assessment under requirements for food safety and secure logistics. Assessors report the following documented condition: A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. Which action BEST addresses the documented security gap?

  1. Combine confidentiality controls with isolated immutable backup retention and verified recovery testing.
  2. Use an authenticated digital signature or message-authentication mechanism where sender authenticity is required.
  3. Use an authenticated encryption scheme with safely generated non-reused nonces and protected keys.
  4. Validate the full certificate chain, identity and validity interval against trusted roots rather than ignoring verification errors.

Explanation

Correct Answer

D:

Validate the full certificate chain, identity and validity interval against trusted roots rather than ignoring verification errors. This directly addresses the authorized assessment finding: A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. The Timberline Foods team should verify the outcome rather than treat a configuration edit as proof. Acceptance evidence: The client rejects an untrusted or wrong-name test certificate while accepting the legitimate service certificate.

Incorrect Answers

A:

Combine confidentiality controls with isolated immutable backup retention and verified recovery testing. This is an appropriate control for a different issue: A team assumes that encrypting a backup makes its deletion by ransomware impossible and therefore performs no restore drills. The Timberline Foods finding instead concerns: A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. It does not demonstrate the required correction. The decisive test remains: The client rejects an untrusted or wrong-name test certificate while accepting the legitimate service certificate.

B:

Use an authenticated digital signature or message-authentication mechanism where sender authenticity is required. This is an appropriate control for a different issue: A file-transfer workflow hashes files with SHA-256 and concludes that this alone proves who sent the file. The Timberline Foods finding instead concerns: A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. It does not demonstrate the required correction. The decisive test remains: The client rejects an untrusted or wrong-name test certificate while accepting the legitimate service certificate.

C:

Use an authenticated encryption scheme with safely generated non-reused nonces and protected keys. This is an appropriate control for a different issue: A database uses a fixed initialization vector for repeated encryption of confidential records with a mode that requires unique nonces. The Timberline Foods finding instead concerns: A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. It does not demonstrate the required correction. The decisive test remains: The client rejects an untrusted or wrong-name test certificate while accepting the legitimate service certificate.

Question 770

At Timberline Foods, the supply-chain assurance team is conducting a coordinated processing-plant assessment under requirements for food safety and secure logistics. The team now needs objective retest evidence for: A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. Which result BEST demonstrates successful remediation?

  1. Large files encrypt efficiently while only the intended recipient can recover the protected symmetric key.
  2. A newly signed message validates under the current trust chain and invalid signatures are reported clearly.
  3. The client rejects an untrusted or wrong-name test certificate while accepting the legitimate service certificate.
  4. A protocol scan rejects obsolete handshakes while approved internal applications negotiate supported cipher suites.

Explanation

Correct Answer

C:

The client rejects an untrusted or wrong-name test certificate while accepting the legitimate service certificate. The observable result demonstrates that the documented condition, A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. has been addressed. The planned remediation is: Validate the full certificate chain, identity and validity interval against trusted roots rather than ignoring verification errors. This is a stronger validation than a saved ticket or unverified claim by Timberline Foods.

Incorrect Answers

A:

Large files encrypt efficiently while only the intended recipient can recover the protected symmetric key. That observation would verify another scenario: A payment service uses RSA encryption directly on large files rather than a modern hybrid-encryption design. The corrective step for that other scenario is: Use a random symmetric data-encryption key and protect it with an appropriate public-key or key-agreement mechanism. But Timberline Foods is evaluating: A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. The necessary outcome is: The client rejects an untrusted or wrong-name test certificate while accepting the legitimate service certificate.

B:

A newly signed message validates under the current trust chain and invalid signatures are reported clearly. That observation would verify another scenario: A company signs email using an expired certificate and assumes recipients will continue to trust the signature indefinitely. The corrective step for that other scenario is: Renew the appropriate certificate and verify signature validity, chain, and trusted timestamp policy. But Timberline Foods is evaluating: A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. The necessary outcome is: The client rejects an untrusted or wrong-name test certificate while accepting the legitimate service certificate.

D:

A protocol scan rejects obsolete handshakes while approved internal applications negotiate supported cipher suites. That observation would verify another scenario: An engineer selects an obsolete cryptographic protocol for internal traffic because the network is not reachable directly from the internet. The corrective step for that other scenario is: Require approved modern TLS configurations on internal services and phase out deprecated algorithms. But Timberline Foods is evaluating: A service presents a certificate signed by an unknown private CA and the client accepts it without checking trust and hostname. The necessary outcome is: The client rejects an untrusted or wrong-name test certificate while accepting the legitimate service certificate.