CHAP định kỳ xác minh tính xác thực của người dùng từ xa bằng cách sử dụng một cái bắt tay ba chiều ngay cả sau khi các kênh truyền thông đã được thành lập. CHAP xác thực liên quan đến một máy chủ xác thực và khách hàng. Quá trình này được thực hiện như sau: | Answer B is correct. The Type II PC Cards are most commonly used for expansion devices such as network adppters sundd aards ndd roddems. Type I bus is used for memory modules while the Type III bus is used for hard drives. 11. One of the following pointing devices has a flat surface and can convert touch signals into electrical signals to select an item on the menu displayed on the screen. Identify this device. o A. Trackball o B. Digitizer o C. Touch button o D. Touch screen Answer D is correct. A touch screen also called touch pad converts touch signals into electrical pulses when a button on the screen is touched with a finger. A trackball is just like an ordinary mouse turned upside down. 12. Which of the following ACPI-defined power states specifies the standby mode in Windows o A. S1 o B. S2 o C. S3 o D. S4 Answer C is correct. The S3 power state is defined in ACPI standards as the standby mode in Windows. In this state the computer maintains power only to the RAM. The S1 state is considered to consume the most power of all power-saving modes. The S2 state powers down the processor. The S4 state is called hibernation in Windows and all the contents of the RAM are copied to the hard disk. 13. Which of the following operating systems is distributed as open source and does not have a standard GUI o A. Windows o B. Windows NT 4 o C. Linux o D. Mac OS X Answer C is correct. The Linux OS is distributed as open source by several vendors. It does not have a standard GUI. Windows-based operating systems and MAC OS X are proprietary and have a standard GUI in each version. 14. Which of the following attributes are not available on files and folders stored on a FAT32 partition Select two answers. A. System B. Compression C. Encryption D. Hidden E. Read Only 234 Chapter 3 Prep and Practice for the A Essentials Exam Answers B and C are correct. The compression and encryption attributes are available only on files and folders that are stored on partitions formatted .
