Flashcards
SCIA 360 Chapter 8
Cards in this deck (20)
- 1The computer system ____ a file by activating the appropriate secondary storage device and loading the file into memory while updating its records of who is using that file. a. creates b. formats c. allocates d. configuresc. allocates
- 2____ are special files with listings of filenames and their attributes. a. Databases b. Directories c. Programs d. Data filesb. Directories
- 3Each volume in a system has a volume descriptor followed by a ____ that lists the names and characteristics of every file contained in that volume. a. file location b. volume directory c. subdirectory d. master file directoryd. master file directory
- 4Many computer users and some operating systems call subdirectories ____. a. folders b. files c. volumes d. databasesa. folders
- 5Although a user directory is treated as a file, it is flagged to indicate to the File Manager that this file is really a ____ whose records are filenames that point to files. a. database b. volume c. subdirectory d. master file directoryc. subdirectory
- 6A file’s ____ filename includes all path information for that file. a. extended b. absolute c. relative d. long-formb. absolute
- 7A(n) ____ filename is the name that differentiates a file from other files in the same directory. a. absolute b. relative c. short-form d. directoryb. relative
- 8A UNIX or Linux system might identify a file as: /usr/imfst/flynn/inventory.doc. The first entry is a forward slash ( / ) representing the master directory, called the ____ directory. a. root b. main c. branch d. workinga. root
- 9As long as users refer to files in the ____ directory, they can access the files without entering the absolute filename. a. root b. main c. home d. workingd. working
- 10When data is stored in fixed length fields, data that extends beyond the fixed size ____. a. generates an operating system error b. is truncated c. is broken up and stored in more than one field d. combines multiple fields to accommodate the datab. is truncated
- 11On magnetic disks, files can be organized in one of three ways: ____. a. indexed direct, indexed indirect, or random b. sequential, indirect, or direct c. sequential, random, or indirect d. sequential, direct, or indexed sequentiald. sequential, direct, or indexed sequential
- 12In a direct record organization scheme, the program used to store the data follows a set of instructions, called a ____ algorithm, that transforms each key into a number, the record’s logical address. a. hashing b. grouping c. translation d. lookupa. hashing
- 13When using indexed sequential record organization, each entry in the index file contains the ____ and the physical location of the data block where this record, and the records with smaller keys, are stored. a. last record name b. highest record key c. lowest record key d. first record nameb. highest record key
- 14The primary disadvantage of contiguous storage is that ____. a. the file system is difficult to create, implement, and manage b. a file can be spread in small pieces throughout the storage area c. a file can’t be expanded unless there is empty space available immediately following it d. the file system cannot support direct accessc. a file can’t be expanded unless there is empty space available immediately following it
- 15____ storage allocation allows files to use any storage space available on the disk. a. Contiguous b. Noncontiguous c. Fragmented d. Extendedb. Noncontiguous
- 16In noncontiguous storage, one way to link file extents is at the storage level where each extent points to the ____. a. current subdirectory b. next file in the sequence c. master directory entry d. next extent in the sequenced. next extent in the sequence
- 17In indexed storage, when a file is created, the pointers in the index block are all set to ____. a. the end of the volume b. the beginning of the volume c. null d. zeroc. null
- 18The formula for computing the current byte address (CBA) for a direct access file with fixed record length is ____. a. CBA = (RN – 1) * RL b. CBA = RN * RL c. CBA = RN / RL d. CBA = (RN + 1) * RLa. CBA = (RN – 1) * RL
- 19A(n) ____ contains a list of files, each of which is associated with the names of users who are allowed to access it and the type of access each user is permitted. a. access control matrix b. access control list c. capability list d. capability matrixb. access control list
- 20____ text compression builds on the previous data element. The first data element in a list is not compressed but each entry after that takes a given number of characters from the previous entry that they have in common and then adds the characters that make it unique. a. Repeated-terms b. Front-end c. Repeated-characters d. Lossyb. Front-end
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- SCIA 360 Flashcards on SCIA 360 Chapter 8, created by Tyler Rock on 17/04/2019.
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- Tyler Rock
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