Briefly describe the concept of inodes used in native Linux file systems.
What will be an ideal response?
Each file has an inode and is identified by an inode number. Inode 0 contains the root of the folder structure (/) and is the jumping-off point for all other inodes. An inode contains general information about that file. Each inode indicates user and group ownership, access mode, the size and type of the file, the date the file was created, and the date the file was last modified and read. The inode for a file contains a pointer (number) that tells the operating system how to locate the first in a set of one or more logical blocks that contain the specific file contents (or it specifics the number of blocks or links to the first block used by the folder or file). In short, the inode tells the operating system where to find a file on the hard disk.
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In SQL, the __________ statement is used to delete a table from a database.
a. REMOVE TABLE b. DEL TABLE c. DROP TABLE d. ERASE TABLE
Deadlock can occur ________.
a) only between two or more threads b) only on multiprogrammed systems c) only if resource sharing is allowed d) none of the above
Create a class called RationalNumber for performing arithmetic with fractions. Write a driver program to test your class.
Use integer variables to represent the data of the class—the numerator and the denominator. Provide a constructor that enables an object of this class to be initialized when it is declared. The constructor should contain default values, in case no initializers are provided, and should store the fraction in reduced form (i.e., the fraction 2/4 would be stored in the object as 1 in the numerator and 2 in the denominator). Provide methods for each of the following: a) Adding two RationalNumbers. The result should be stored in reduced form. b) Subtracting two RationalNumbers. The result should be stored in reduced form. c) Multiplying two RationalNumbers. The result should be stored in reduced form. d) Dividing two RationalNumbers. The result should be stored in reduced form. e) Printing RationalNumbers in the form a/b, where a is the numerator and b is the denominator. f) Printing RationalNumbers in floating-point format.
56Kb/s is only possible when there is an analog to digital conversion when an analog modem is used
Indicate whether the statement is true or false