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NEW QUESTION # 112
A database administrator needs to ensure data that is being migrated from a company's system to a third-party vendor is secure. Which of the following is the best security measure for the administrator to implement?
Answer: D
Explanation:
Server-side encryption protects data during migration by encrypting it, ensuring confidentiality and security when transferring to a third-party vendor.
NEW QUESTION # 113
(A database manager would like to reduce the overhead caused by log-based recoveries. Which of the following should the manager use to best mitigate the situation?)
Answer: D
Explanation:
The correct answer is B. Checkpoints. CompTIA DataSys+ explains that checkpoints play a critical role in database recovery mechanisms by limiting the amount of transaction log data that must be processed during recovery. Log-based recovery relies on transaction logs to restore the database to a consistent state after a failure. If checkpoints are infrequent, the database engine must replay a large portion of the transaction log, which increases recovery time and system overhead.
A checkpoint is a process where the database writes all modified (dirty) pages from memory to disk and records a synchronization point in the transaction log. After a checkpoint completes, the database knows that all changes up to that point are safely stored on disk. During recovery, the system only needs to process log entries that occurred after the most recent checkpoint, significantly reducing recovery workload and time.
DataSys+ highlights checkpoints as a key performance and availability feature, especially in systems with high transaction volumes.
Option A, deadlocks, are concurrency issues that occur when two or more transactions block each other indefinitely. While deadlock handling is important for transaction throughput, it does not reduce log-based recovery overhead. Option C, locks, control concurrent access to data and help maintain consistency, but they do not affect how much log data must be replayed during recovery. Option D, indexes, improve query performance but can actually increase logging activity because index changes are also logged.
CompTIA DataSys+ emphasizes that effective recovery planning includes optimizing logging behavior and checkpoint frequency. Properly configured checkpoints strike a balance between runtime performance and recovery efficiency by reducing excessive log replay without causing unnecessary disk I/O.
Therefore, to best mitigate the overhead caused by log-based recoveries, the database manager should use checkpoints, making option B the correct and fully verified answer.
NEW QUESTION # 114
(A shared folder can only be accessed by authorized users. Which of the following policies was applied in this scenario?)
Answer: D
Explanation:
The correct answer is B. Rights and privileges. CompTIA DataSys+ clearly distinguishes between different categories of security controls, and access to shared resources such as folders is governed primarily by authorization mechanisms, specifically rights and privileges. In this scenario, access is restricted so that only authorized users can view or modify the shared folder, which directly reflects the enforcement of permissions.
Rights and privileges define what actions an authenticated user is allowed to perform on a system or resource. For shared folders, this typically includes read, write, modify, or full control permissions assigned to users or groups. DataSys+ emphasizes the principle of least privilege, which ensures users are granted only the minimum level of access required to perform their job functions. Applying appropriate rights and privileges protects sensitive data from unauthorized access and accidental modification.
Option A, password policies, control how passwords are created and managed, such as complexity, expiration, and reuse rules. While password policies help verify a user's identity during authentication, they do not determine which resources a user can access after logging in. Option C, service accounts, are specialized non-human accounts used by applications or services and are unrelated to user access to shared folders. Option D, firewall policy, controls network-level traffic and determines which connections are allowed or blocked between systems, not access to files or folders once a connection is established.
CompTIA DataSys+ materials emphasize that security is layered, with authentication confirming identity and authorization enforcing access. In this case, users are already authenticated, and the restriction applies at the resource level. That makes rights and privileges the relevant control.
Therefore, the policy applied to ensure only authorized users can access the shared folder is rights and privileges, making option B the correct and fully verified answer.
NEW QUESTION # 115
Which of the following is used to document the system catalog in a database?
Answer: B
Explanation:
A data dictionary documents the system catalog by providing metadata about database objects, their structure, and relationships within the database.
NEW QUESTION # 116
A server administrator wants to analyze a database server's disk throughput. Which of the following should the administrator measure?
Answer: A
Explanation:
The factor that the administrator should measure to analyze a database server's disk throughput is IOPS.
IOPS, or Input/Output Operations Per Second, is a metric that measures the number of read and write operations that a disk can perform in one second. IOPS indicates the performance or speed of a disk and how well it can handle multiple requests or transactions. Higher IOPS means higher disk throughput and lower latency. IOPS can be affected by various factors, such as disk type, size, speed, cache, RAID level, etc. The other options are either not related or not sufficient for this purpose. For example, RPfvl is not a valid acronym or metric; latency is the time delay between a request and a response; reads are the number of read operations performed by a disk. References: CompTIA DataSys+ Course Outline, Domain 3.0 Database Management and Maintenance, Objective 3.2 Given a scenario, monitor database performance.
NEW QUESTION # 117
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