Which of the following uses a symmetric encryption algorithm that takes a lesser amount of time to
encrypt or decrypt large amounts of data.
A.
BitLocker
B.
SSID
C.
BitLocker To Go
D.
EFS
Explanation:
Encrypting File System (EFS) works by encrypting a file with a bulk symmetric key, also known as the
File Encryption Key (FEK). It uses a symmetric encryption algorithm that takes a lesser amount of
time to encrypt or decrypt large amounts of data. Files encrypted by EFS cannot be compressed with
NTFS compression.Answer A is incorrect. BitLocker Drive Encryption (BitLocker) is used to protect all files stored on the
drive on which Windows is installed. It encrypts the entire system drive and helps block hackers from
accessing the system files they rely on to discover user passwords.
BitLocker also prevents hackers from accessing the hard disk by removing it from a computer, and
installing it on a different computer.
BitLocker does not work for USB Flash Drives.Answer B is incorrect. Service Set Identifier, or SSID, is a name that identifies a particular 802.11
wireless LAN. A client device receives broadcast messages from all access points within range,
advertising their SSIDs. The client device can then either manually or automatically, based on
configuration, select the network and can associate itself. The SSID can be up to 32 characters long.
As the SSID displays to users, it normally consists of human-readable characters. The SSID is defined
as a sequence of 1-32 octets, each of which may take any value.Answer C is incorrect. BitLocker To Go is an extension of BitLocker Drive Encryption. BitLocker To Go
prevents from disclosure of data made available through physical loss of removable storage devices
such as USB Flash Drives, USB Portable Hard Drives, etc. BitLocker To Go gives administrators control
over how removable storage devices can be utilized within their environment and the strength of
protection that they require. BitLocker To Go is a separate feature than the traditional BitLocker
feature and it can be utilized on its own, without requiring the system partition to be protected with
the traditional BitLocker feature.