WGU Updated Introduction-to-IT Exam Questions and Answers by erik

Data mirroring is an important business continuity strategy because it maintains a synchronized copy of data on a separate storage system or site. In Information Technology, mirroring supports rapid recovery by ensuring that if the primary data store fails, an up-to-date replica is available to restore operations. Mirroring may be implemented through storage replication, database replication, or real-time backup technologies, and it is often used for high-availability systems that require minimal data loss. This approach directly supports business continuity goals by reducing recovery time and limiting the recovery point, meaning less data is lost between the failure and the restored system. User authentication and data encryption are critical security controls, but they do not by themselves ensure operational continuity after outages or disasters. Service variety is not a standard continuity strategy term in most IT curricula. Business continuity focuses on redundancy, replication, failover, and recovery processes. Since mirroring creates a continuously updated duplicate of critical data, it is a core strategy used to maintain availability and speed restoration. Therefore, the correct answer is data mirroring.

A repeater extends cable range by regenerating or amplifying a signal so it can travel farther without degrading. In Information Technology networking, signals weaken over distance due to attenuation and interference. A repeater receives the incoming signal, cleans or reconstructs it, and then retransmits it at full strength. This allows network segments to exceed the normal maximum cable length limits for a given standard and helps maintain reliable communication. Repeaters are commonly associated with the physical layer of networking because they deal with signal transmission rather than packet routing or traffic decisions. A switch operates mainly at the data link layer and forwards frames based on MAC addresses within a local network, but it does not primarily exist to boost signal strength. A router connects different networks and forwards packets using IP addressing and routing tables. A firewall is a security device that filters traffic based on rules to protect networks. Since the question focuses on increasing signal strength to extend range, the correct equipment is a repeater.

To determine a student’s previous academic year’s course load, the most crucial piece of information is the course identification number. This unique identifier allows for the retrieval of specific data related to each course, such as the number of credit hours or units associated with the course, which directly contributes to the calculation of the course load.

Here’s a step-by-step explanation of how this information is used:

1.Identify the Student: The database must have a record of the student for whom the course load is being determined.

2.Retrieve Course Records: Using the student’s identification, the database retrieves all course records associated with that student for the specified academic year.

3.Use Course Identification Numbers: Each course taken by the student will have a unique course identification number.

4.Determine Credit Hours: The course identification number can be used to look up the credit hours or units for each course, as this information is typically tied to the course ID in the database.

5.Calculate Course Load: By summing the credit hours for all courses taken in the previous academic year, the student’s course load can be calculated.