Final answer:
The statement that SAM:1 keeps a hash of a user's password is true; SAM refers to Security Accounts Manager in Windows which stores passwords in a hashed format for security.
Step-by-step explanation:
The statement SAM:1 keeps a hash of a user's password is true. SAM stands for Security Accounts Manager, which is a system file in Windows that stores the passwords of users in a hashed format. Hashing is a form of cryptography that transforms a string of characters into a usually shorter fixed-length value or key that represents the original string. Hashes are designed to be one-way functions, meaning that once a password has been turned into a hash, it cannot be easily converted back to its original plaintext form. This is why only the hash of the password is stored, to increase security in case the SAM file is accessed by unauthorized users.