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Which of the following command is used to format a disk to accept DOS file?
a) FORMAT               
b) DIR
c) DR                          
d) none of these

a

Which of the following command is used to display information about a command?
a) DER                        
b) HELP
c) DR                          
d) none of these

b

Which of the following command is used to create directories?
a) MKDIR                  
b) DIR
c) DR                          
d) none of these

a

Explanation: MKDIR stand for make directory



What is the maximum length of the filename in DOS?
a) 6                 
b) 8                 
c) 10   
d) 12

b

Which of the following command is used to remove directories?
a) DER                        
b) RD
c) DR                          
d) none of these

b

Explanation: RD stand for remove directory



Which of the following command is used to rename file or directories?
a) DER                        
b) DIR
c) REN                       
d) none of these

c

Explanation: REN stand for rename file