OSG202 TL6 -1

A

Question #1 (1 point) The Linking technique that allows the file to appear in more than one directory are: Hard link Symbolic link Both hard link and symbolic link Soft link

2

Question #10 (1 point) How many categories can be the I/O devices roughly divided? 1 2 3 4

d

Question #11 (1 point) A directory in UNIX/Linux consists of: I-node number and file name File name, file size, location of the file on disk File name, file size, location of the file on disk, date created, owner ID None of the other choices

b

Question #13 (1 point) Which of the following is not correct about hard links and symbolic links? Symbolic links need space to store the path name and considerable number of extra disk accesses Hard links do not require extra disk space Symbolic links can point to files in the network Hard links can point to files on other machines

d

Question #14 (1 point) Increasing file system performance is implemented by _____ Buffer cache Block Read Ahead Defragmenting Disks All of the other choices

d

Question #15 (1 point) Which of the following allocation methods, Operating system MS-DOS is implemented? Contiguous allocation Linked allocation Indexed allocation Linked allocation using FAT

a

Question #16 (1 point) One of the primary disadvantages of contiguous storage is that ____. It is hard to implement and manage It is difficult to find information in files File can't be expanded unless there is empty space available immediately following it It is an inefficient use of space

c

Question #17 (1 point) Which class of I/O devices that Scanner belongs to? Stream devices Block devices Character devices None of the other choices

a

Question #18 (1 point) Which method is used to implement files to keep each file as a linked list of disk blocks? Linked List Allocation Contiguous Allocation File Allocation Table i-node

b

Question #19 (1 point) Which of the following is true about the data rate for disk management? The larger the block size is the faster the data rate is The larger the block size is the lower the data rate is The larger the block size is lesser the disk space is None of the other choices

D

Question #2 (1 point) Which of the following statements is not correct about the device controller of I/O devices? Is electronic component of device Is also called adapter Can handle two, four, or even eight identical devices Is software component of device

a

Question #20 (1 point) Which is the maximum partition size, if FAT type is FAT-12 and the block size is 2 KB? 8 MB 128 MB 256 MB 512 MB

c

Question #21 (1 point) Which ways are used to keep track of free block in disk space management? A linked list method A bitmap method Both linked list method and bitmap method None of the other choices

b

Question #22 (1 point) Which classes of I/O devices that Clock belong to? Stream devices Block devices Character devices None of the other choices

D

Question #23 (1 point) Which are allocation methods of disk blocks for files? Contiguous allocation Linked allocation Indexed allocation All of the other choices

B

Question #24 (1 point) The File Manager writes the volume name and other descriptive information on an easy-to-access place on each unit: ____ of the CD or DVD The outermost part The innermost part Immediately following the master file directory Stored at the beginning of the volume

C

Question #25 (1 point) Disk can be divided up into one or more partitions. The first block of every partition is called: Free block MBR Boot block Super blockv

D

Question #26 (1 point) Which of the following statements about the task of device controller of I/O devices is correct? Convert serial bit stream to block of bytes Perform error correction as necessary Make available to main memory All of the other choices

D

Question #27 (1 point) The disk block in a partition that includes a magic number, the number of blocks in the file system and other key administrative information is called: Free block MBR Boot block Superblock

D

Question #28 (1 point) The main classes of I/O devices are: Stream devices Block devices Character devices Block devices and Character devices

A

Question #29 (1 point) Which mechanism is implemented by writing to the log file with the purpose of file system management and optimization? Journaling File Systems Log-Structured File Systems Virtual File Systems None of the other choices

c

Question #3 (1 point) Which of the following is not correct about hard links? Hard links can point to files in the network Hard links do not require extra disk space Hard links can only point to files on the same machines Hard links require to increase the link count in the i-node for each linking

C

Question #30 (1 point) ____ allocation allows files to use any storage space available on the disk. Contiguous storage Noncontiguous storage Fragmented storage Add-on storage

C

Question #31 (1 point) Strategy used for dumping a disk to tapes is: Physical dump Logical dump Both physical dump and logical dump None of the other choices Both physical dump and logical dump None of the other choices

C

Question #32 (1 point) The disk blocks in a partition that contains the top of the file system tree is called: Free space management blocks Root directory Boot block Superblock

B

Question #33 (1 point) Which method is used to implement files with file's size larger than 2 GB in UNIX V7? i-node with single indirect block i-node with triple indirect block FAT 32 FAT 16

D

Question #34 (1 point) Which is not attribute of MS-DOS file? Read-Only Archived Hidden, System Lock

C

Question #35 (1 point) Which of the following information contain in the entry of the partition tables? Starting and ending address of each partition Marking a partition as active Both starting and ending address of each partition and marking a partition as active None of the other choices

A

Question #36 (1 point) If i-node contains 10 direct addresses and all disk blocks are 1024 KB, what is largest possible file 10 MB 10 GB 1 GB None of the other choices

C

Question #37 (1 point) Which of the following allocation methods the i-nodes use? Contiguous allocation Linked allocation Indexed allocation Linked allocation using FAT

B

Question #38 (1 point) Which class of I/O devices that disks and tapes belong to? Stream devices Block devices Character devices None of the other choices

C

Question #39 (1 point) Which is the maximum number of partition that most disks can be divided up? 2 3 4 5

c

Question #4 (1 point) What is incorrect about contiguous allocation of files? It is simple to implement It leads to excellent read performance It does not cause disk fragmentation It is widely used on CD-ROMs

D

Question #40 (1 point) An example of a I/O character devices is CD ROM Disks Modem All of the other choices

C

Question #42 (1 point) Which of the following is correct about symbolic links? Symbolic links need not space to store the path name Symbolic links can only point to files on the same machines Symbolic links can point to files in the network None of the other choices

C

Question #43 (1 point) Which is the maximum partition size, if the FAT type is FAT-16 and the block size is 2 KB? 8 MB 128 MB 256 MB 512 MB

D

Question #44 (1 point) Which of a system call is to allow the file to appear in more than one directory? OPEN SEEK CREATE LINK

B

Question #46 (1 point) Which part of a disk is used to boot the computer? Free block MBR Root block Super block

B

Question #47 (1 point) Which solution is used to solve the "missing block" problem for file system consistency? The file system checker rebuilds the free list The file system checker adds the missing blocks to the free list The file system checker allocate the free block, then copy the duplicate block in used to there None of the other choices

B

Question #48 (1 point) The File Manager writes the volume name and other descriptive information on an easy-to-access place on each unit: ____ of the magnetic disk The outermost part The innermost part Immediately following the master file directory Stored at the beginning of the volume

C

Question #49 (1 point) Which classes of I/O devices that keyboard belong to? Stream devices Block devices Character devices None of the other choices

a

Question #5 (1 point) Which of a system call is to allow the system to specify from where to take the data in file? OPEN SEEK CREATE LINK

B

Question #50 (1 point) Which of the following is not a well-known technique for organizing the physical storage blocks for a file? Contiguous block allocation Linked list block allocation Sparse block allocation Indexed block allocation

D

Question #6 (1 point) An example of the key differences that can exist across (and even in) types of I/O devices is: Data rate Data representation Error conditions All of the other choices

a

Question #7 (1 point) Which of the following is not correct about the main classes of I/O devices? Stream devices Block devices Character devices Block devices and Character devices

b

Question #8 (1 point) A table in main memory storing linked list of allocation of disk blocks is called: Disk allocation table Linked list table File list table File allocation table

d

Question #9 (1 point) The Joliet Extensions provide ________ Long file name supported Unicode character Directory nesting deeper than 8 levels Directory names with extensions All of the other choices