5.8.7 Practice Questions

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Question 1: Correct Check Disk detects disk integrity errors and fixes them. Match each type of integrity error with its description on the right. A series of used clusters on the hard disk drive that are not associated with a specific file. Lost clusters correct answer: When two files claim the same cluster. Cross-linked file correct answer: Files that exist on the hard drive, but are not associated with a directory in the index. Orphaned files correct answer: A portion of the hard disk that cannot be used. Bad sector correct answer: Keyboard Instructions Explanation Check Disk detects disk integrity errors and fixes them. Errors that can be checked and fixed by Check Disk include the following:  Lost clusters are a series of used clusters on the hard disk drive that are not associated with a specific file.  A cross-linked file occurs when two files claim the same cluster. Check Disk identifies cross-linked files and corrects their cluster associations.  Orphaned files are files that exist on the hard drive, but are not associated with a directory in the index. Normally, Check Disk can re-associate the file with the correct directory.  A bad sector is a portion of the hard disk that cannot be used. Bad sectors are marked as such. Any used bad sectors are redirected to another sector. References  5.8.1 Storage Optimization  5.8.5 Disk Optimization Facts  7.1.13 System Command Facts  7.1.14 Use System Commands

 11.8.1 Command Line Network Utilities  11.8.9 Command Line Network Utilities Facts q_dsk_opt_check_disk_err_msg_def_pp7.question.fex Question 2: Correct You are an IT administrator who is troubleshooting a computer from within Windows Command Prompt. You are trying to execute the chkdsk command line tool, but it keeps failing. Which of the following command switches would give you the BEST information on how to run this command? Answer chkdsk /info chkdsk /help Correct Answer: chkdsk /? chkdsk /i Explanation Adding the /? switch displays the proper syntax to run the command. All of the other switches will return an error message. References  5.8.1 Storage Optimization  5.8.5 Disk Optimization Facts  7.1.13 System Command Facts  7.1.14 Use System Commands  11.8.1 Command Line Network Utilities  11.8.9 Command Line Network Utilities Facts q_dsk_opt_check_disk_help_pp7.question.fex Question 3: Correct Which of the following utilities would you use to correct cross-linked clusters within the file system on a Windows workstation? Answer attrib Correct Answer: chkdsk

DiskScan fdisk Explanation Use the chkdsk utility to check the disk for errors and repair them. Use fdisk to create and delete partitions on older versions of Windows. Use attrib to toggle attributes on individual files. DiskScan is used on a Linux system to perform surface analysis on a portion of a hard disk. References  5.8.1 Storage Optimization  5.8.5 Disk Optimization Facts  7.1.13 System Command Facts  7.1.14 Use System Commands  11.8.1 Command Line Network Utilities  11.8.9 Command Line Network Utilities Facts q_dsk_opt_chkdsk_correct_clusters_pp7.question.fex Question 4: Correct Which of the following Windows command line utilities would you use to realign the file structure on a disk to optimize performance? Answer chkdsk Correct Answer: defrag fdisk Disk Management Explanation Use the defrag command to place files in contiguous order on a disk, realigning the file structure to optimize performance. Use chkdsk to search the system for lost allocation units and corrupted files. Use fdisk on older versions of Windows to create and delete partitions.

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Use Disk Management to access the properties of a volume and then run the Defragmentation graphical utility from there. References  5.8.1 Storage Optimization  5.8.5 Disk Optimization Facts  5.9.3 SSD Storage Issues  5.9.4 SSD Maintenance Facts  7.1.11 Windows System Tool Facts q_dsk_opt_defrag_cmd_def_pp7.question.fex Question 5: Correct Which of the following commands would you run on a Linux system to find out how much disk space is being used on each of the file systems? Answer ls -R fsck Correct Answer: df -h umount Explanation To find out how much disk space is being used by each of the file systems on your Linux system (in human-readable format), you would use the df -h command. The fsck command looks for errors in the file system. The umount command unmounts a file system. The ls -R command lists files in a directory, including all subdirectories. References  5.8.3 Optimize Disks in Linux q_dsk_opt_df_command_pp7.question.fex Question 6: Correct Which of the following disk maintenance utilities locates and disposes of files that can be safely removed from a disk? Answer

Check Disk Disk Defragmenter Disk Management Correct Answer: Disk Cleanup Explanation Disk Cleanup helps manage disks by locating and disposing of files that can be safely removed from the disk. Disk Defragmenter optimizes the performance of your hard drive by joining fragments of files that are in different locations into a single location. Check Disk is a utility that verifies a hard disk's file system integrity. Disk Management is a tool for viewing, modifying, and creating partitions. References  5.8.1 Storage Optimization  5.8.5 Disk Optimization Facts  5.8.6 Perform Disk Maintenance q_dsk_opt_disk_cleanup_def_pp7.question.fex Question 7: Correct Which of the following disk maintenance utilities optimizes the performance of your hard drive by joining parts of files that are in different locations into a single location? Answer Correct Answer: Disk Defragmenter Check Disk Disk Management Disk Cleanup Explanation Disk Defragmenter optimizes the performance of your hard drive by joining fragments of files that are in different locations into a single location. The more information is on the drive, the more time it will take to defragment.

Disk Cleanup helps manage disks by locating and disposing of files that can be safely removed from the disk. Check Disk is a utility that verifies a hard disk's file system integrity. Disk Management is a tool for viewing, modifying, and creating partitions. References  5.8.1 Storage Optimization  5.8.5 Disk Optimization Facts  5.9.3 SSD Storage Issues  5.9.4 SSD Maintenance Facts  7.1.11 Windows System Tool Facts q_dsk_opt_disk_defrag_def_pp7.question.fex Question 8: Incorrect Your computer currently uses a 5,400 RPM hard disk. You want to improve your computer's overall performance by optimizing your hard disk performance. Which of the following would be the MOST effective means to optimize your hard disk performance? (Select two.) Answer Upgrade your hard disk interface to eSATAp. Upgrade your hard disk interface to SATA 2. Correct Answer: Upgrade your hard disk interface to SATA 3. Implement RAID 0 on the current hard disk. Incorrect answer: Upgrade to a 7,200 RPM hard disk. Correct Answer: Upgrade to a 10,000 RPM hard disk. Explanation Upgrading to a 10,000 RPM hard disk and upgrading to a SATA 3 disk interface are the two most effective steps you can take to improve your computer's overall performance. The 7,200 RPM hard disk is not the fastest hard disk option. At 600 Mbps, the SATA 3 disk interface is twice as fast as the SATA 2 interface. Although hard disk drives are not capable of sending data at the full 600 Mbps, they can go faster than the SATA 2 interface allows.

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Implementing RAID 0 does improve hard disk performance, but it requires a minimum of two disks. Adding another hard disk while keeping your current 5,400 RPM disk would not improve your hard disk performance as much as upgrading to a 10,000 RPM hard disk with a SATA 3 disk interface. References  5.1.1 Storage Devices  5.1.2 Storage Device Facts  5.8.1 Storage Optimization  5.8.5 Disk Optimization Facts q_dsk_opt_disk_optimize_sol_pp7.question.fex Question 9: Correct You have decided to optimize the hard drive on your Windows laptop by running the Error Checking utility. What are the things that you can expect the Error Checking utility to perform? (Select two.) Answer Delete temporary files Defragmentation Correct Answer: Fix lost clusters Correct Answer: Fix cross-linked files Compress old files Explanation The Error Checking utility finds and fixes lost clusters as well as cross-linked files. The Optimize Drives app performs several tasks, including hard drive defragmentation. The Disk Cleanup app performs several tasks, including deleting temporary files and compressing old files. References  5.8.5 Disk Optimization Facts q_dsk_opt_error_check_tasks_pp7.question.fex Question 10:

Incorrect You notice that the hard drive on your iMac Pro is running slower than before. You decide to run the First Aid utility to optimize the drive. Which of the following is recommended to make sure that the First Aid utility is 100% effective? Answer Incorrect answer: Check Disk Usage in the Storage tab. Make sure that the hard drive is at 80% or less capacity. Correct Answer: Run First Aid by booting into Recovery Mode. Defragment the hard drive first. Explanation To be 100% effective, always run the First Aid utility by booting into Recovery Mode. By running First Aid in Recovery Mode, you can make sure that the entire disk has been verified and checked by the utility and that all files can be repaired. A good rule of thumb is that when a hard drive gets to about 80% capacity, it's time to delete files. But you can still run First Aid effectively when a hard drive is at 80% or more capacity. On a macOS system, you do not need to defragment your hard drive, as the Mac file system does a very efficient job of storing and retrieving data. While the Disk Usage window provides you with a lot of different information about the installed storage disks on your system, you do not need to check this information before using First Aid.

5.8.7 Practice Questions

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