Describe the features found in the Ext4 file system available to CentOS 7 users?

What will be an ideal response?

The Extended 4 file system, adds robustness through a greater implementation of journalizing, faster time-stamping, faster file system checking, and inode structure extents, which replace the traditional block mapping scheme used by the ext2 and ext3 file systems, and afford even less chance of fragmentation than other Linux systems. Ext4 also offers larger file system support-a 48-bit block as opposed to ext3's 32-bit block.