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Q61. - (Topic 3)
Which of the following commands will reduce all consecutive spaces down to a single space?
A. tr 's' ' ' < a.txt > b.txt
B. tr -c ' ' < a.txt > b.txt
C. tr -d ' ' < a.txt > b.txt
D. tr -r ' ' 'n' < a.txt > b.txt
E. tr -s ' ' < a.txt > b.txt
Answer: E
Q62. CORRECT TEXT - (Topic 2)
In which directory must definition files be placed to add additional repositories to yum?
Answer: /etc/yum.repos.d, /etc/yum.repos.d/, yum.repos.d, yum.repos.d/
Q63. CORRECT TEXT - (Topic 1)
Which command will display messages from the kernel that were output during the normal boot sequence?
Answer: dmesg, /bin/dmesg
Q64. - (Topic 3)
Which grep command will print only the lines that do not end with a / in the file foo?
A. grep '/$' foo
B. grep '/#' foo
C. grep -v '/$' foo
D. grep -v '/#' foo
Answer: C
Q65. - (Topic 1)
Which of the following kernel parameters instructs the kernel to suppress most boot messages?
A. silent
B. verbose=0
C. nomesg
D. quiet
Answer: D
Q66. - (Topic 3)
What happens after issuing the command vi without any additional parameters?
A. vi starts and loads the last file used and moves the cursor to the position where vi was when it last exited.
B. vi starts and requires the user to explicitly either create a new or load an existing file.
C. vi exits with an error message as it cannot be invoked without a file name to operate on.
D. vi starts in command mode and opens a new empty file.
E. vi starts and opens a new file which is filled with the content of the vi buffer if the buffer contains text.
Answer: D
Q67. CORRECT TEXT - (Topic 3)
Which command displays a list of all background tasks running in the current shell? (Specify ONLY the command without any path or parameters.)
Answer: jobs
Q68. - (Topic 3)
Which of the following commands can be used to create a USB storage media from a disk image?
A. gdisk
B. dd
C. cc
D. fdisk
E. mount
Answer: B
Q69. - (Topic 3)
Which of the following commands is used to change options and positional parameters for a running Bash?
A. history
B. set
C. bashconf
D. setsh
E. envsetup
Answer: B
Q70. - (Topic 4)
What do the permissions -rwSr-xr-x mean for a binary file when it is executed as a command?
A. The command is SetUID and it will be executed with the effective rights of the owner.
B. The command will be executed with the effective rights of the group instead of the owner.
C. The execute flag is not set for the owner. Therefore the SetUID flag is ignored.
D. The command will be executed with the effective rights of the owner and group.
Answer: C