Name: 张 海
#1 Points possible: 3
Operating system for which the NTFS file system was developed _______.
LINUX UNIX DOS
WINDOWS NT
#2 Points possible: 3
A file should be _______ before it is accessed.
named opened established backed up
#3 Points possible: 3
A file system uses a two-level indexed allocation scheme. If the size of each block is 1KB, and the block address is 4 bytes, then the
maximum length of a file this system can support is approximately _____ .
16MB 64MB 128MB 256MB
#4 Points possible: 3
A file’s absolute path name starts from __________ .
current directory root directory home directory multi-level directory
#5 Points possible: 3
Commonly, In memory the file control block of a file does not contain_________.
the access rights the timestamp the file size the file name
#6 Points possible: 3
Consider a file has 100 data blocks. Assume that the file control block, the index block(s) are all in memory. Which of the following actions does not require any I/O operations?
moving the last block to the beginning, if contiguous allocation method is used
moving the last block to the beginning, if indexed allocation method is used
moving the last block to the beginning, if linked allocation method is used
moving the first block to the end, if linked allocation method is used
#7 Points possible: 3
File access is protected by _____.
both user access rights and file attributes both user priority and file attributes both file attributes and user password
#8 Points possible: 3
The system design the structure File Control Block (FCB) to manage the files. Commonly, File control block is created on disk when the _____ system call is invoked.
fork open read write
#9 Points possible: 3
Files on the hard disk are accessed as units of _______ .
blocks tracks records cylinders
#10 Points possible: 3
In order to solve name collision, the file system normally adopts _________.
pathnames indexing
tree-like directory structures conventional naming methods
#11 Points possible: 3
Which file allocation method does not allow direct access efficiently?
Contiguous allocation Linked allocation Indexed allocation Hashed allocation
#12 Points possible: 3
In a file system, the basic operation in a “Open” system call is ________.
reading file contents from outer storage into memory reading file control information from outer storage into memory
reading file’s FAT table from outer storage into memory reading disk block from disk into memory
#13 Points possible: 3
Which allows supporting multiple file systems?
ext2 ext3 VFS NTFS
#14 Points possible: 3
Which of the following acronyms has no relationship with file systems?
ext3
ext4 SDT
#15 Points possible: 3
Which of the following allocation method is not fit for the file’s dynamic increasing ?
Contiguous allocation Linked allocation Indexed allocation Hashed allocation
