Computer Applications Final Exam

The correct answer is CPU, which stands for Central Processing Unit. The CPU is often referred to as the "brains" of the computer because it is responsible for executing instructions and performing calculations. It acts as the main control unit and carries out tasks such as fetching, decoding, and executing instructions, as well as managing the flow of data within the computer system.

The correct answer is RAM, which stands for Random Access Memory. RAM is a type of computer memory that allows data to be read and written quickly. However, when the computer is turned off, the data stored in RAM is lost, hence the statement "if you turn off the computer I will forget everything." Therefore, RAM fits the given description.

Storage in a computer is designed to hold data or information. Data refers to the raw facts, figures, or statistics that are processed by a computer. It can be in various forms such as text, numbers, images, audio, or video. The storage devices in a computer, such as hard drives or solid-state drives, provide a means to store and retrieve this data for later use. Without storage, the computer would not be able to retain or access the necessary information required for its functioning and user interaction.

The correct answer is "motherboard." The motherboard is a circuit board that holds and connects all the other circuit boards in a computer system. It is the main printed circuit board (PCB) and is responsible for allowing communication between various components such as the processor, memory, and peripherals. Without a motherboard, the other circuit boards would not be able to function properly or be connected to each other.

The given answer is ROM, which stands for Read Only Memory. ROM is a type of computer memory that can only be read from, but not written to. It is used to store permanent data and instructions that are essential for the functioning of a computer system. ROM retains its contents even when the power is turned off, making it a non-volatile memory. This aligns with the statement in the question that the entity being described has very good memory and can read, but cannot write.

A DVD holds even more information than a CD. DVDs have a larger storage capacity compared to CDs, allowing them to store more data, such as movies, videos, software, and other multimedia content. This increased storage capacity is due to the physical differences in the design of DVDs, including the use of smaller pits and tighter track spacing. As a result, DVDs are commonly used for storing and distributing larger files and high-quality video content.

The power supply is responsible for providing electricity to the computer. It converts the alternating current (AC) from the wall outlet into direct current (DC) that the computer components can use. Without a power supply, the computer would not be able to function as it needs electricity to power its various components. Therefore, the power supply is the correct answer to the question.

The given answer states that primary memory is stored on chips located on the motherboard. Primary memory refers to the main memory of a computer system, which is directly accessible by the CPU. It is typically made up of random access memory (RAM) chips that store data and instructions that are actively being used by the computer. Since primary memory is an essential component of a computer's hardware and is physically located on the motherboard, the answer is correct.

A comma is the only part of speech that can replace a dash. In grammar, a dash is often used to indicate a pause or interruption in a sentence, and a comma can serve the same purpose. Both punctuation marks can be used to separate clauses or phrases within a sentence, providing a similar function in terms of indicating a break or shift in thought. Therefore, a comma is the correct answer as it is the only part of speech that can effectively replace a dash in a sentence.

A CD or cd is a type of storage medium that typically has a capacity of around 650 MB. It is commonly used to store and distribute digital content such as music, software, or data files. CDs are popular due to their relatively low cost, wide compatibility with different devices, and ease of use. They are often used for creating audio CDs, installing software, or backing up important files.

A perfect score on the writing portion of the ACT is 12. This means that the student has demonstrated exceptional writing skills and has effectively addressed the prompt with a well-structured essay that is coherent, organized, and free of grammatical errors. The student has also showcased a strong command of language, utilizing a variety of sentence structures, vocabulary, and rhetorical devices to effectively convey their ideas. Overall, a score of 12 indicates mastery of the writing skills necessary for college-level work.

The given answer "Secondary, secondary" is correct. It suggests that memory is stored in the secondary storage device, which is the hard drive. The primary storage, such as RAM, is volatile and temporary, while the secondary storage, like a hard drive, is non-volatile and retains data even when the computer is turned off. Therefore, the correct answer is "Secondary" as it refers to the storage of memory in the hard drive.

RPM stands for revolutions per minute, which is a unit of measurement used to quantify the rotational speed of an object. It is commonly used in various fields such as engineering, physics, and automotive industry to describe the number of complete rotations an object makes in one minute. "Records per minute" and "rotations per minute" are incorrect answers as they do not accurately represent the meaning of RPM.

A crash refers to a sudden and unexpected failure or malfunction in a computer system. During a crash, the computer's circuits may be affected, leading to the loss or corruption of data. This can result in the computer forgetting things or experiencing memory loss. Therefore, the statement is true.

The correct answer is BIOS. BIOS stands for Basic Input/Output System. It is a firmware that is stored on a computer's motherboard. When the computer is powered on, the BIOS initializes and performs a series of tests to ensure that the hardware components are functioning properly. It also loads the operating system into the computer's memory. In a way, the BIOS wakes up the computer and reminds it what to do by providing the necessary instructions for the hardware and software to work together.

Ports are the connection points on a computer or electronic device where other hardware, such as a keyboard or monitor, can be plugged in. They allow for the transfer of data and communication between the device and external peripherals. Therefore, the correct answer is "Ports".

A hard drive is a storage device in a computer where information is stored on magnetic cylinders. It is a non-volatile memory that allows for long-term data storage and retrieval. The information is written and read using magnetic heads that move across the spinning disks inside the hard drive. Therefore, a hard drive is the correct answer to the question.

The correct answer is "Video Card, video card, videocard." A video card, also known as a graphics card, is responsible for generating and displaying images, videos, and graphics on the monitor. It processes and renders data to produce high-quality visuals, making it an essential component for gaming, video editing, and graphic design.

The statement correctly states that inside a CD-ROM, there is a laser that reflects light off the surface of the disk to an electric eye. This is how the CD-ROM reads the data stored on the disk. The laser scans the surface of the disk, and the reflected light is detected by the electric eye, allowing the data to be read and processed by the computer. Therefore, the answer is true.

CDs use a combination of pits and lands to store data on the disk surface. Pits are tiny indentations or depressions on the surface of the CD, while lands are the flat areas between the pits. These pits and lands represent the 0s and 1s of binary data, with the presence of a pit indicating a 0 and the absence of a pit representing a 1. The laser in a CD player reads these pits and lands to retrieve the stored information.

The process of writing and reading to a hard or floppy disk is done with electricity and magnetism. This is because the data on a disk is stored in the form of magnetic fields, which are created and manipulated using electricity. When writing data to a disk, an electrical current is used to generate a magnetic field that represents the data. When reading data from a disk, the magnetic field is detected and converted back into electrical signals that can be interpreted as data. Therefore, both electricity and magnetism play a crucial role in the functioning of disk storage systems.

The statement suggests that the most uncommon use for compact discs, other than playing music, is storing software programs. However, this is not true. Compact discs are commonly used for various purposes such as storing data, software programs, videos, and other multimedia content. Therefore, the answer is false.

The 4C's for the English part of the ACT are complete, concise, consistent, and clear. These qualities are important in writing and communication. "Complete" means that all necessary information is included. "Concise" means being brief and to the point. "Consistent" refers to maintaining a uniform style and tone throughout the writing. "Clear" means that the message is easily understandable and free from ambiguity. These 4C's help ensure effective communication and understanding of the content.

The given sentence is missing necessary commas. The correct placement of commas would be after "Recitation" and after "course". The first comma is needed to separate the introductory phrase "Recitation, although it is a required part of the course," from the main clause "is a bore." The second comma is necessary to separate the two items in the list "recitation" and "course".

The correct answer is "gold, moreover, gold moreover". The explanation for this is that the sentence is indicating that the price of gold has fluctuated wildly in recent years. The word "moreover" is used to add information or emphasize a point. In this case, it is used to emphasize the fact that the price of gold has been particularly volatile. The comma after "gold" is used to separate the two parts of the sentence, while the double commas after "moreover" indicate that it is being used as an interrupter in the sentence.