What is the difference between WAV and MP3
What is the difference between WAV and MP3?
WAV is sound digitally sampled at a fixed rate and word size, e.g. 44 kHz 16-bit. The higher the sampling rate, the better high notes like cymbals will be reproduced. The highest frequency that can be encoded is half the sampling frequency.
MP3 is a lossy compression format that can get up to 20x compression compared to WAV. The bitrate can be variable or fixed. Unless a low quality compression is selected, most people cannot tell the difference in playback.
MP3 stores metadata like album, artist, and song inside the file, which is displayed on most MP3 players. WAV can't do that AFAIK, but metadata from ripped CDs is available on the internet and may be automatically stored on your PC.
What are the different types of automated backup and explain briefly what they do?
There are four backup types: mirror backup, full backup, differential backup and incremental backup. Following is a quick overview of each type of backup.
Mirror backup - similar to a full backup, but instead of compressing and possibly password protecting the file, the files are copied over to the backup location.
Full Backup - This backup type is what most people commonly understand as a back up it is a complete copy of the data that is to be backed up, with all the files and the folders in the appropriate places, because of this the full back tends to take the longest time but also means that the restore operation is the quickest.
Incremental backup - Incremental backup is where only the changes since the last back up are stored, whatever type of back up it be. This means that it takes the least amount of time to back up, when compared to the other backup methods, but this also means that it takes the longest to do a restoration, and this time may be critical especially when dealing with real time systems, where every second of downtime counts.
How many possible combinations does an 8 character password have if it includes
WAV is sound digitally sampled at a fixed rate and word size, e.g. 44 kHz 16-bit. The higher the sampling rate, the better high notes like cymbals will be reproduced. The highest frequency that can be encoded is half the sampling frequency.
MP3 is a lossy compression format that can get up to 20x compression compared to WAV. The bitrate can be variable or fixed. Unless a low quality compression is selected, most people cannot tell the difference in playback.
MP3 stores metadata like album, artist, and song inside the file, which is displayed on most MP3 players. WAV can't do that AFAIK, but metadata from ripped CDs is available on the internet and may be automatically stored on your PC.
What are the different types of automated backup and explain briefly what they do?
There are four backup types: mirror backup, full backup, differential backup and incremental backup. Following is a quick overview of each type of backup.
Mirror backup - similar to a full backup, but instead of compressing and possibly password protecting the file, the files are copied over to the backup location.
Full Backup - This backup type is what most people commonly understand as a back up it is a complete copy of the data that is to be backed up, with all the files and the folders in the appropriate places, because of this the full back tends to take the longest time but also means that the restore operation is the quickest.
Incremental backup - Incremental backup is where only the changes since the last back up are stored, whatever type of back up it be. This means that it takes the least amount of time to back up, when compared to the other backup methods, but this also means that it takes the longest to do a restoration, and this time may be critical especially when dealing with real time systems, where every second of downtime counts.
How many possible combinations does an 8 character password have if it includes