CHFI - Chapter 3 (Hard Disks and File Systems) Test 100% Solved

CHFI - Chapter 3 (Hard Disks and File Systems) Test 100% Solved This RAID architecture uses Byte level stripping with a dedicated parity disk - RAID 3 This RAID architecture does not use any parity, striping or mirrioring - RAID 2 This RAID architecture uses Hamming code and ECC - RAID 2 This RAID architecture provides the best performance of the single RAID levels but does not providing mirroring - RAID 0 This RAID architecture uses disk mirroring and copies data to multiple disks at the same time. Read is fast, but slow on write. - RAID 1 This RAID architecture uses bit level striping - RAID 2 This RAID architecture uses byte level stripping and stores the parity on multiple drives - RAID 5 This RAID architecture requires minimum of three drives - RAID 5 This RAID architecture is also know as RAID 1+0 - RAID 10 This RAID architecture uses at least four drives - RAID 10 The reserved area on a HDD, meant to store data in a way that the user, BIOS, or OS cannot modify, change, or access it. Information about HDD utilities, diagnostic tools, boot sector code, etc. is found here. - Host Protected Areas (HPA) An additional hidden area which enables system vendors to buy HDDs of varying sizes from different manufacturers and configure all of them to have an equal number of sectors. It can also be used to enable/disable features on the HDD. - Device Configuration Overlays (DCO) Use this command to identify DCO (Devies Config Overlays) - DEVICE_CONFIGURATION_IDENTIFY The three ATA commands that can help users to create and use a hidden protected area are: - IDENTIFY DEVICE; SET MAX ADDRESS; READ NATIVE MAX ADDRESS This RAID type mirrors disks in PAIRS - RAID 10 ASCII non printable range is? - 0-31 ASCII lower character range is? - 32-127 ASCII higher character range is? - 128-255 JPEG allows compression ratios of _ % - 90 JPEG start marker endian: - FF D8 FF (yo) JPEG end marker endian - FF D9 (yU) BMP images start with HEX code: - 42 4d (BM) GIF images start with HEX code: - PDFs start with HEX code: - PNG images start with HEX code: - 89 50 4e DOC, XLS, PPT files start with the same HEX code: - d0 cf 11 e0 a1 b1 1a e1 DOCx, XLSx, PPTx files start with HEX code: - 50 4b 00