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Computers 101 Practice Test: The System Unit - Processing and Memory
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Computers 101 Practice Test: The System Unit - Processing and Memory
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25 Questions

1. The ____ is the section of the CPU that performs arithmetic involving integers and logical operations.
2. Eight bits grouped together are collectively referred to as a ____.
3. The key element of the microprocessor is the ____—a device made of semiconductor material that acts like a switch controlling the flow of electrons inside a chip.
4. Most network cards contain a port that accepts a(n) ____, which looks similar to a telephone connector but is larger.
5. ____ are small components typically made out of aluminum with fins that help to dissipate heat.
6. The term ____ refers to chip-based storage used by the computer.
7. Like graphics data, ____—such as a song or the sound of someone speaking—must be in digital form in order to be stored on a storage medium or processed by a PC.
8. Instructions and data flow in and out of the CPU via the ____.
9. A(n) ____ instruction might look like a meaningless string of 0s and 1s, but it actually represents specific operations and storage locations.
10. In order to synchronize all of a computer’s operations, a ____—a small quartz crystal located on the motherboard—is used.
11. In a 16.8-million-color (called photographic quality or ____) image, three bytes (24 bits) are used to store the color data for each pixel in the image.
12. Since Jack has a Windows system, he can right-click a hard drive icon in Windows Explorer, select Properties, and then select the ____ option on the Tools tab to check that hard drive for errors.
13. Jack can speed up his computer by scanning it for viruses and ____.
14. Video data—such as home movies, feature films, and television shows—is displayed using a collection of ____.
15. The bus width and bus speed together determine the bus’s ____ or bandwidth; that is, the amount of data that can be transferred via the bus in a given period of time.
16. A ____ is equal to 1,024 bytes.
17. Most computers today support the ____ standard, in which the computer automatically configures new devices as soon as they are installed and the PC is powered up.
18. Terascale computing is the ability of computers to process one ____ floating-point operations per second (teraflops).
19. One nanometer (nm) is ____ of a meter.
20. A ____ is an electronic path over which data can travel.
21. ____ are very small pieces of silicon or other semiconducting material onto which integrated circuits are embedded.
22. A computer ____ is the amount of data (measured in bits or bytes) that a CPU can manipulate at one time.
23. Jack can use the ____ program to locate and delete temporary files, such as installation files, Web browsing history, and files in the Recycle Bin.
24. The ____ tries to predict what data and instructions will be needed and retrieves them ahead of time, in order to help avoid delays in processing.
25. One of the most promising types of nonvolatile RAM is magnetic (or more precisely, ____) (MRAM).

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