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NEW QUESTION # 46
Which of the following is a result of an on-path attack on a system?
Answer: C
Explanation:
A result of an on-path attack on a system is a Wi-Fi network that redirects to clones of legitimate websites. An on-path attack is a type of attack that intercepts and modifies the traffic between two parties without their knowledge or consent. An attacker can use an on-path attack to create a rogue Wi-Fi network that mimics a legitimate one, and then redirect the users to fake websites that look like the ones they intended to visit. The attacker can then steal the users' personal or financial information, such as usernames, passwords, credit card numbers, or bank account details. The other options are either results of different types of attacks or not related to attacks at all. For example, a website that has crashed and is no longer accessible may be a result of a denial-of-service attack, an email from an unknown source requesting bank account details may be a result of a phishing attack, and a web application that returns the addresses of its customers may be a result of a poor design or a data breach. References: 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 # 47
A database administrator needs to provide access to data from two different tables to multiple group users in order to facilitate ongoing reporting. However, some columns in each table are restricted, and users should not be able to see the values in these columns.
Which of the following is the best action for the administrator to take?
Answer: A
Explanation:
The best action for the administrator to take is to create a view. A view is a virtual table that shows a subset of data from one or more tables. The administrator can use a view to provide access to data from two different tables to multiple group users without exposing the restricted columns. The view can also simplify the queries and improve the performance of the reporting process. The other options are either not suitable for this scenario or do not address the requirement of hiding some columns from users. For example, creating a stored procedure would require additional coding and execution, creating a csv export would create a static file that may not reflect the latest data changes, and creating a trigger would perform an action in response to an event rather than provide access to data.
NEW QUESTION # 48
A database administrator executed multiple transactions and needs to finish the operations.
Which of the following functions should the administrator use?
Answer: A
Explanation:
The Commit function finalizes all changes made during the transactions, making them permanent in the database.
NEW QUESTION # 49
(Which of the following best describe a tablespace? Select two.)
Answer: A,D
Explanation:
The correct answers are D. It can contain more than one data file and F. It can be used to organize data in a database. CompTIA DataSys+ describes a tablespace as a logical storage container used by a database to organize how data is physically stored on disk. Tablespaces provide an abstraction layer between the logical database objects and the physical storage files.
A tablespace can include multiple data files, which allows database administrators to distribute data across different disks or storage systems. This capability supports scalability, performance optimization, and high availability. By adding or resizing data files within a tablespace, administrators can expand storage capacity without restructuring the database schema. DataSys+ highlights this as a key advantage for capacity planning and storage management.
Tablespaces are also used to organize data within a database. Different tablespaces can be created for different purposes, such as separating user data, indexes, temporary data, and system metadata. This organization improves performance tuning, simplifies backup and recovery operations, and enhances manageability. For example, placing indexes in a separate tablespace from table data can reduce I/O contention.
Option A is incorrect because a tablespace belongs to a single database and cannot span multiple databases.
Option B is misleading; while tablespaces map to data files, blocks are allocated within files, not mixed arbitrarily across files. Option C is incorrect because segments are allocated in extents, and their sizing behavior is controlled by storage parameters, not defined as a primary purpose of tablespaces. Option E is incorrect because tablespaces represent disk-based storage, not memory-resident structures.
CompTIA DataSys+ emphasizes understanding logical versus physical storage concepts. Tablespaces play a central role in bridging these concepts by organizing data logically while enabling flexible physical storage management. Therefore, the best descriptions of a tablespace are D and F, making them the correct and verified answers.
NEW QUESTION # 50
Which of the following is the best way to migrate a large data load from one table to another, considering total time and blocking?
Answer: A
Explanation:
The best way to migrate a large data load from one table to another, considering total time and blocking, is to batch into small loads and run in parallel. This means that the large data load is divided into smaller chunks that can be processed simultaneously by multiple threads or processes. This reduces the total time required for the migration and also minimizes the blocking of other operations on the tables involved. The other options are either less efficient or more prone to blocking. For example, splitting the load size into many transactions may increase the overhead and latency of each transaction; splitting the load size in half and running simultaneously may still cause blocking or contention; batching large loads into one transaction may take longer and lock the tables for longer periods. Reference: CompTIA DataSys+ Course Outline, Domain 3.0 Database Management and Maintenance, Objective 3.3 Given a scenario, migrate data between databases.
NEW QUESTION # 51
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