Multiple users can share a UNIX machine. This is made possible by the OS by using one user’s idle time to service other users. What is this feature of an operating system identified as?
A. data sharing
B. time sharing
C. one-time initialization
D. light weight kernel threading E. interrupt driven process handling
User scott issued the following command at the bash prompt:
[scott@station1 ~]$read -t15 -n10 -s DAX
What is the purpose of issuing this command?
A. to make the read statement provide 15 seconds to enter up to 10 characters silently (no echo to terminal) into the $DAX variable
B. to make the read statement provide 15 seconds to enter a minimum of 10 characters echoing onto the terminal
C. to make the read statement provide 15 seconds to enter a minimum of 10 characters without echoing onto the terminal
D. to make the read statement provide 15 seconds to enter up to 10 characters, echoing onto to terminal, into the $DAX variable
Exam Tags: 1z0-409,1z0-409 dumps,1z0-409 exam questions
Match the following signal values with their description.
1. 9 a. Hangup
2 . 19 b. Terminate the process and dump core
3. 11 c. Kill signal
4. 1 d. Stop the process
A. 1-c, 2-b, 3-a,4-b
B. 1-c, 2-d, 3-b, 4-a
C. 1-d, 2-b, 3-c, 4-a
D. 1-d, 2-a, 3-c, 4-b
Note the command given below:
ls -l | grep hello\.gif
Which statement is true about this command?
A. It will long-list the file hello.gif.
B. It will return an error because an escape character \ is used.
C. It will long-list the files in the hello*gif format from the current working directory.
D. It will long-list the hello.gif, hello-gif files or any file in the hello? gif format.