The answer is incremental backup as this is the one
responsible of having to provide a backup with files that are modified since
the last backup it has received, it is considered to be a backup in which is a
type of security copy.
 
        
             
        
        
        
Answer:
True
Explanation:
The class Math include mathematical functions such as sin(), cos(), tan(), abs(), etc
If the given statement is not written, each of the math function will be written as (take for instance, the sin() function):
<em>Math.sin()</em>
<em></em>
But after the statement has been written (it implies that the Math library has been imported into the program) and as such each of the mathematical function can be used directly.
So instead of <em>Math.sin(), </em>you write <em>sin()</em>
 
        
             
        
        
        
Answer:
  Linux directories and their purposes are: 
1) lib - Lib file contained the share object library file which necessary to boots system and this directory contain file module stored in the kernel. 
2) etc - etc file is the configuration file that they are local in the machines. When the program run these file are stored in the directories. this can be static and do not executable directory. 
3) Boot - Boot file are stored in the directory which required processing of linux boot and such files are included in the linux kernel of the file. 
4) Root - Root file are the best user root directory and user cannot view this directories from there account. This file usually contain administrative file system.  
5) Home - Home file contained the user directory and it is the default system of linux. Home directory helps user to enable any network system to access there home directories. 
 
        
             
        
        
        
Answer:
c. Norms.
Explanation:
When Elena noticed her friend getting uncomfortable when she kisses him on the cheeks as a form of greeting she was violating his norms.
Norms are something that is standard or typical.
In USA there they not used to kiss on the cheeks to greet their friends there would be some other norm of greeting someone.