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NEW QUESTION # 66
(A company's database was hacked. A security officer conducted an audit and discovered that an attacker used a rainbow table to break into one of the user accounts to access the database. Which of the following is the best immediate response to this attack?)
Answer: B
Explanation:
The correct answer is D. Password hash salting. According to CompTIA DataSys+ objectives, rainbow table attacks specifically target hashed passwords by using precomputed hash values to quickly reverse weak or unsalted hashes back into their original plaintext passwords. If an attacker successfully used a rainbow table, it strongly indicates that the database stored password hashes without proper salting or used weak hashing algorithms.
Password salting is a defensive technique where a unique random value (the salt) is added to each password before hashing. This ensures that even if two users have the same password, their resulting hashes are different. More importantly, salting renders rainbow tables ineffective because the attacker would need to generate a separate rainbow table for every possible salt value, which is computationally impractical.
DataSys+ highlights salting as a critical immediate control to protect stored credentials once a password compromise is identified.
Option C, strong passwords, is a preventative control but not the best immediate response. Even strong passwords can be compromised if hashes are unsalted and exposed. Option A, security and awareness training, addresses user behavior but does not mitigate the technical weakness exploited in this attack. Option B, implementing security policies and procedures, is important for long-term governance but does not directly stop rainbow table attacks against existing password hashes.
CompTIA DataSys+ emphasizes that when credential storage mechanisms are compromised, administrators must prioritize cryptographic protections at the database level. This includes salting, using strong hashing algorithms, and forcing credential resets. Among the options provided, password hash salting is the most direct and effective response to prevent the same attack vector from succeeding again.
Therefore, the best immediate response is D. Password hash salting, making it the verified and correct answer aligned with CompTIA DataSys+ guidance.
NEW QUESTION # 67
Over the weekend, a company's transaction database was moved to an upgraded server. All validations performed after the migration indicated that the database was functioning as expected. However, on Monday morning, multiple users reported that the corporate reporting application was not working.
Which of the following are the most likely causes? (Choose two.)
Answer: B,E
Explanation:
The most likely causes of the reporting application not working are that the access permissions for the service account used by the reporting application were not changed, and that the reporting application's mapping to the database location was not updated. These two factors could prevent the reporting application from accessing the new database server. The other options are either irrelevant or unlikely to cause the problem.
NEW QUESTION # 68
A database administrator needs to ensure database backups are occurring on a daily basis and at scheduled times. Which of the following actions should the administrator take?
Answer: B
Explanation:
The action that the administrator should take is to review the server logs for entries. Server logs are files that record the events and activities that occur on a server, such as database backups, errors, warnings, or failures. By reviewing the server logs, the administrator can verify that the database backups are occurring on a daily basis and at scheduled times, and also identify any issues or anomalies that may affect the backup process or the backup quality. The other options are either not relevant or not sufficient for this task. For example, querying the database to observe entries may not show the backup status or frequency, checking the database schema may not reflect the backup schedule or policy, and reviewing the backup media may not indicate the backup time or duration.
NEW QUESTION # 69
Which of the following is an attack in which an attacker hopes to profit from locking the database software?
Answer: D
Explanation:
The attack in which an attacker hopes to profit from locking the database software is ransomware. Ransomware is a type of malware that encrypts the data or files on a system or network and demands a ransom from the victim to restore them. Ransomware can target database software and lock its access or functionality until the victim pays the ransom, usually in cryptocurrency. Ransomware can cause serious damage and loss to the victim, as well as expose them to further risks or threats. Ransomware can be delivered through various methods, such as phishing emails, malicious attachments, compromised websites, etc. The other options are either different types of attacks or not related to locking database software at all. For example, spear phishing is a type of phishing attack that targets a specific individual or organization with personalized or customized emails; SQL injection is a type of attack that inserts malicious SQL statements into an input field or parameter of a web application to manipulate or compromise the underlying database; on-path is a type of attack that intercepts and modifies the data in transit between two parties on a network. Reference: CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.4 Given a scenario, identify common types of attacks against databases
NEW QUESTION # 70
A database administrator needs to ensure database backups are occurring on a daily basis and at scheduled times. Which of the following actions should the administrator take?
Answer: B
Explanation:
The action that the administrator should take is to review the server logs for entries. Server logs are files that record the events and activities that occur on a server, such as database backups, errors, warnings, or failures.
By reviewing the server logs, the administrator can verify that the database backups are occurring on a daily basis and at scheduled times, and also identify any issues or anomalies that may affect the backup process or the backup quality. The other options are either not relevant or not sufficient for this task. For example, querying the database to observe entries may not show the backup status or frequency, checking the database schema may not reflect the backup schedule or policy, and reviewing the backup media may not indicate the backup time or duration. References: CompTIA DataSys+ Course Outline, Domain 5.0 Business Continuity, Objective 5.2 Given a scenario, implement backup and restoration of database management systems.
NEW QUESTION # 71
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