九夏ペ微凉7.
According to Parkinson's Law of Data, additional memory 错误！未找到引用源。 错误！未找到引用源。(a) encourages the use of memory intensive techniques 错误！未找到引用源。 错误！未找到引用源。(b) results in decreased use of memory 错误！未找到引用源。 错误！未找到引用源。(c) always requires additional RAM 错误！未找到引用源。(d) requires the CPU to run programs 错误！未找到引用源。 faster
Correct answer is (a)
8.
Which of the following is (are) true regarding bottlenecks that degrade the performance of a computer system? I. II. Slow transfer of data between components in a system constitutes a bottleneck. A slow video card can constitute a bottleneck for graphics applications.
错误！ 错误！未找到引用 源。(a) I and II 错误！ 错误！未找到引用 源。(b) I only
错误！未找到引用 错误！ 源。(c) None 错误！ 错误！未找到引用 源。(d) II only Correct answer is (a)
9.
Which of the following kinds of files can be significantly compressed, while having little impact on the processing speed of other running applications when the compressed file data is accessed? 错误！未找到引用源。 错误！未找到引用源。(a) Small binary files 错误！未找到引用源。 错误！未找到引用源。(b) Frequently used applications 错误！未找到引用源。 错误！未找到引用源。(c) Infrequently used large text files 错误！未找到引用源。 错误！未找到引用源。(d) Operating system files
Correct answer is (c)
10.
Which of the following is a reason for degradation in computer system performance due to insufficient RAM?
错误！未找到引用源。 错误！未找到引用源。(a) The processor performance will be less than optimal.
错误！未找到引用源。 错误！未找到引用源。(b) It takes a longer time to transfer data from the hard disk to the cache. 错误！未找到引用源。 错误！未找到引用源。(c) Instructions have to be loaded frequently from the hard disk. 错误！未找到引用源。 错误！未找到引用源。(d) It takes a longer time to transfer data from the peripheral devices to the chipset. Correct answer is (c) 2. Which bus transfers data between the CPU and the chipset? 错误！未找到引用源。 错误！未找到引用源。(a) Memory 错误！未找到引用源。 错误！未找到引用源。(b) 引用源 PCI 错误！未找到引用源。 错误！未找到引用源。(c) Front side 错误！未找到引用源。 错误！未找到引用源。(d) AGP Correct answer is (c) 4. The speed of a computer bus is measured in _____, whereas the transfer rate is measured in _____. 错误！ 未找到引用源。 hertz, (a) 错误！ 未找到引用源。 Bps 错误！未找到引用源。 错误！未找到引用源。(b) bits, channels 错误！未找到引用源。 错误！未找到引用源。(c) channels, bits 错误！未找到引用源。 错误！未找到引用源。(d) Bps, hertz Correct answer is (a) 16. A parallel port can be used to connect a computer to a
错误！未找到引用源。 错误！未找到引用源。 (a) monitor 错误！未找到引用源。 错误！未找到引用源。 (b) keyboard 错误！未找到引用源。 错误！未找到引用源。 (c) mouse 错误！未找到引用源。 错误！未找到引用源。 (d) printer Correct answer is (d)
10.
Of the following, which best describes what happens when a user opens a document for
editing? 错误！未找到引用源。 错误！未找到引用源。(a) The document image is directly edited on the disk where it resides. 错误！未找到引用源。 错误！未找到引用源。(b) A copy of the document is loaded from the disk into cache memory and edited in the cache. 错误！未找到引用源。 错
误！未找到引用源。(c) The document image is moved to free space on the disk where the image is directly edited. 错误！未找到引用源。 错误！未找到引用源。(d) A copy of the document is loaded from the disk into RAM and edited in RAM. Correct answer is (d)
3.
Consumer demand for more powerful desktop computers continues to grow at a rapid pace, keeping up with the technological advances predicted by Moore's Law. If a user purchased a state-of-the-art computer 18 months ago, what should such a user expect to pay for a computer today that is twice as powerful as the computer that is now 18 months old? 错误！未找到引用源。 错误！未找到引用源。(a) Approximately half the amount of money paid for the old computer 错误！未找到引用源。 错误！未找到引用源。(b) Approximately the same amount of money paid for the old computer 错误！ 未找到引用源。 Approximately three times the amount of money paid for the old computer (c) 错误！ 未找到引用源。 错误！未找到引用源。 错误！未找到引用源。(d) Approximately twice the amount of money paid for the old computer Correct answer is (b)
6.
Which of the following is a reason for degradation in computer system performance due to insufficient cache memory? 错误！未找到引用源。 错误！未找到引用源。(a) It takes a longer time to transfer data from the peripheral devices to the chipset. 错误！未找到引用源。 错误！未找到引用源。(b) The processor performance will be less than optimal. 错误！未找到引用源。 错误！未找到引用源。(c) It takes a longer time to transfer data from the hard disk to the cache. 错误！未找到引用源。 错误！未找到引用源。(d) Instructions have to be loaded frequently from the hard disk. Correct answer is (b)
2.
Which of the following is (are) true regarding integrated circuits and microprocessors? I. II. Integrated circuits contain more electrical components than microprocessors. Microprocessors must be manufactured for each application separately, while integrated circuits can be reused.
错误！ 错误！未找到引用 源。(a) I and II 错误！ 错误！未找到引用 源。(b) None
错误！ 错误！未找到引用 源。(c) II only 错误！ 错误！未找到引用 源。(d) I only Correct answer is (b)
1.
Which of the layers of software that make up a computer system provides applications with direct access to the operating system? 错误！未找到引用源。 错误！未找到引用源。(a) Device drivers 错误！未找到引用源。 错误！未找到引用源。(b) The BIOS 错误！未找到引用源。 错误！未找到引用源。(c) Scripts 错误！未找到引用源。 错误！未找到引用源。(d) The API
Correct answer is (d)
2.
How does the operating system support multiple applications running concurrently on a computer with a single CPU? 错误！未找到引用源。 错误
！未找到引用源。(a) The operating system creates an environment for the simultaneous execution of applications. 错误！未找到引用源。 错误！未找到引用源。(b) The operating system contains accounts for multiple users. 错误！未找到引用源。 错误！未找到引用源。(c) The operating system quickly switches the CPU back and forth between applications. 错误！未找到引用源。 错误！未找到引用源。(d) The operating system continues to run at the same time input/output devices are running.
Correct answer is (c)
3.
Device drivers facilitate communication between which layers of the system? 错误！未找到引用源。 错误！未找到引用源。(a) Applications and hardware devices 错误！未找到引用源。 错误！未找到引用源。(b) Different hardware devices 错误！未找到引用源。 错误！未找到引用源。(c) The operating system and hardware devices 错误！未找到引用源。 错误！未找到引用源。(d) The operating system and applications using hardware devices
Correct answer is (c)
4.
Which of the following steps are performed by the BIOS during the boot process? I. II. Locating a disk drive that has an operating system to be loaded Loading the necessary device drivers needed by the operating system
III.
Loading into RAM the program to load the operating system
错误！ 错误！未找到引用源。 未找到引用源。(a) I and III only 错误！ 错误！未找到引用源。 未找到引用源。(b) I and II only 错误！未找到引用源。 错误！未找到引用源。(c) II and III only 错误！ 错误！未找到引用源。 未找到引用源。(d) I, II, and III Correct answer is (a)
5.
Which of the following consequences are likely to happen when increasing the amount of time that each application can use the CPU, before the operating system preempts to allow another application to use the CPU? I. II. III. A runnable process will have a greater amount of access to the CPU once it becomes a running task. There will be fewer blocked processes. Fewer processes can be multitasked by the operating system.
错误！未找到引用源。 错误！未找到引用源。(a) II and III only 错误！未找到引用源。 错误！未找到引用源。(b) I, II, and III 错误！未找到引用源。 错误！未找到引用源。(c) I only 错误！未找到引用源。 错误！未找到引用源。(d) I and II only Correct answer is (c)
6.
Which of the following software layer sequences correctly represents the task of saving a file with a text editor? 错误！ 未找到引用源。 operating system, application, hardware, (a) 错误！ 未找到引用源。 device driver 错误！未找到引用源。 错误！未找到引用源。(b) operating system, device driver, application, hardware 错误！ 未找到引用源。 application, operating system, hardware, 错误！ 未找到引用源。(c) device driver 错误！未找到引
用源。 错误！未找到引用源。(d) application, operating system, device driver, hardware
Correct answer is (d)
7.
Which of the following services are provided by the BIOS? I. II. III. Orchestration of the initial boot process Management of file creation and file deletion Basic support for devices such as the keyboard
错误！ 错误！未找到引用 源。(a) I and II 错误！ 错误！未找到引用 源。(b) I only 错误！ 错误！未找到引用 源。(c) II only 错误！ 错误！未找到引用 源。(d) I and III Correct answer is (d)
8.
Which of the following could contain a Master Boot Record? I. II. III. Hard disk drive Floppy disk drive RAM
错误！未找到引用源。 错误！未找到引用源。(a) II and III only 错误！未找到引用源。 错误！未找到引用源。(b) I and II only 错误！未找到引用源。 错误！未找到引用源。(c) I and III only 错误！未找到引用源。 错误！未找到引用源。(d) I, II, and III Correct answer is (b)
9.
Which of the following is not a reason why similar hardware products typically include their own device drivers to be installed on the system? 错误！未找到引用源。 错误！未找到引用源。(a) The new driver corrects problems that were discovered in the application's interface to the device driver. 错误！未找到引用源。 错误！未找到引用源。(b) The operating system was released prior to the hardware product becoming available. 错误！未找到引用源。 错误！未找到引用源。(c) The hardware interface may be proprietary to a vendor. 错误！ 未找到引用源。 The hardware interface on one vendor's product may support more (d) 错误！ 未找到引用源。 functionality.
