CompTIA ITF+ Practice Test (FC0-U61)

The correct answer is 1 Gbps, which represents a data transfer rate of 1000 Mbps. Understanding this is essential, because it helps in evaluating the speed of network connections. Gbps stands for gigabits per second, which is a measure used to express high-speed data transfer rates. A gigabit is 1,000 times larger than a megabit, so 1 Gbps is 10 times faster than 100 Mbps.

A Network Attached Storage (NAS) device is specifically designed to connect to a network to provide access to files across multiple users simultaneously without the need for a direct connection to a central computing resource like a workstation or dedicated server. A flash drive is for single-user, local storage; a file server would necessitate a dedicated system; and a modem is a device that facilitates internet connections without providing file storage services.

The correct answer is true because a function is a reusable block of code that performs a specific task. It can be called multiple times within a program, allowing for code reusability and better organization. While functions are designed to execute instructions, they must be explicitly called to perform their tasks; they do not execute independently or continuously without being invoked.

A petabyte (PB) is a unit of digital information storage that is larger than a terabyte (TB). A petabyte equals 1024 terabytes or 1 million gigabytes (GB). This knowledge is crucial for professionals in IT to understand the scaling of data storage capacities.

The correct answer is 'Data persistence'. Data persistence refers to the characteristic of databases to save data in a way that it is preserved over time, despite events like power outages or system restarts. Without data persistence, information would be lost when the database is closed, which would defeat the purpose of long-term data storage. 'Data redundancy' refers to having the same piece of data stored in two or more places, which can be a part of backup strategies but is not the same as persistence. 'Data transience' and 'Data volatility' are not standard terms related to the long-term retention of data in databases.

HDMI and DisplayPort are both used for high-resolution displays, but DisplayPort typically supports higher resolutions and refresh rates than HDMI. Therefore, DisplayPort is the better choice for the best video quality on high-resolution monitors. VGA and DVI are older standards that do not support as high resolutions as HDMI or DisplayPort. Mini DisplayPort is similar to DisplayPort, but it is not as widely compatible as the full-sized DisplayPort connector.

In flowcharts, the oval or ellipse is used as a terminal symbol indicating the start or end of a process. While the other shapes have different meanings in the context of flowchart elements, such as the rectangle for a process step and the diamond for a decision, the oval stands out as the universal symbol signaling the beginning or conclusion of a program.

This statement is incorrect. Main memory, also known as Random Access Memory (RAM), is used temporarily to store information that the CPU needs while a computer is on; it does not store data permanently. When the power is turned off, data in the RAM is lost. Permanent storage is typically achieved with storage devices like hard drives, solid-state drives, or cloud storage where data persists even when the computer is turned off. Understanding the difference between temporary and permanent storage is crucial for IT professionals.

When the initial theory is not confirmed after testing (in this case, replacing the network card did not resolve the connection issue), it is necessary to establish a new theory and test it, or escalate the issue to a higher level of support if you are unable to determine the probable cause. Escalating is a common practice when a resolution cannot be found with the available resources or knowledge, allowing someone with more expertise or different resources to assist.

The premise of this question is a common misconception that can trip up new IT students. When permissions are set on a directory, they do not inherently propagate to the files within that directory. Each file has its own set of permissions that need to be individually managed unless inheritance is explicitly defined or a bulk change is performed. This is why the correct answer is that modifying permissions of a directory does not directly change the permissions of the files contained within it.

The answer is correct because an 'if-else' statement is indeed a common branching structure used in programming. It allows a program to choose between two pathways: one that is taken if the condition evaluates to true ('if' part), and another if the condition evaluates to false ('else' part). This is a basic concept of control flow in programming languages.

Application Programming Interfaces (APIs) are the best choice for allowing a developer to programmatically interact with a database from within a custom application. APIs provide a set of routines, protocols, and tools for building software and applications and are designed to facilitate the creation, reading, updating, and deletion of data. Direct access often involves manually entering data through a client or command-line interface, which is not automated. Import/export utilities are generally used for bulk data operations rather than interactive, application-driven access. SQL injection is a technique used by attackers to insert malicious SQL code into a database query and is not a legitimate method of database interaction.

The correct answer is SELECT * FROM Customers WHERE city = 'Paris'; because it specifically requests all records (noted by the asterisk *) from the 'Customers' table where the 'city' column matches the condition of being 'Paris'. The other options are incorrect because they either reference incorrect syntax, select from the wrong table, or filter by an incorrect condition.

Rule-based access control is used to restrict system access to authorized users based on a set of rules defined by the system or network administrator. If a user's request doesn't match the pre-established rules, access to the system or network is denied, ensuring that only permissible actions are allowed.

Upgrading the RAM (Random Access Memory) can improve a computer's performance, especially when running multiple programs simultaneously, because it increases the amount of information that can be held in fast-access memory. More RAM allows for more processes to be run smoothly without having to swap data to and from slower storage solutions, like hard drives or SSDs. The CPU wouldn't necessarily directly increase multitasking capabilities, and the GPU mainly enhances graphic processing. A cooling system improves heat dissipation but does not impact the amount of data that can be actively processed.