What is the purpose of file locking? 0000 To prevent the hard drive from accessing files To prevent two processes from concurrently accessing the same file O To encrypt a file in order to prevent unauthorized access To allow one process to gain control of a file from another process Which access method allows for information in the file to be processed on media, such as tape? Random Direct Relative Sequential Which access type uses the most seek operations on a disk drive, thus delivering a lower rate of throughput? Direct Random O Relative Sequential What is used to assign permissions to users on a file or directory? User mode File control block ID protection Access control list What was changed in the NFS Version 4 protocol to make it more secure? It implemented sessions. O It was made stateless. It implemented sockets. It implemented compression. O It was made stateful