101-400 Exam
101-400 preparation labs（51 to 60） for IT engineers: Jul 2021 Edition
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Q51. - (Topic 4)
After successfully creating a hard link called bar to the ordinary file foo, foo is deleted from the filesystem. Which of the following describes the resulting situation?
A. foo and bar would both be removed.
B. foo would be removed while bar would remain accessible.
C. foo would be removed. bar would still exist but would be unusable.
D. Both foo and bar would remain accessible.
E. The user is prompted whether bar should be removed, too.
Answer: B
Q52. - (Topic 1)
What is the first program that is usually started, at boot time, by the Linux kernel when using SysV init?
A. /lib/init.so
B. /sbin/init
C. /etc/rc.d/rcinit
D. /proc/sys/kernel/init
E. /boot/init
Answer: B
Q53. - (Topic 2)
Which of the following commands is used to update the list of available packages when using dpkg based package management?
A. apt-get update
B. apt-get upgrade
C. apt-cache update
D. apt-get refresh
E. apt-cache upgrade
Answer: A
Q54. - (Topic 4)
What does the command mount -a do?
A. It mounts all available filesystems onto the current directory.
B. It shows all mounted filesystems.
C. It mounts all user mountable filesystems for the current user.
D. It mounts all filesystems listed in /etc/fstab which have the option auto set.
E. It mounts all filesystems listed in /etc/fstab which have the option noauto set.
Answer: D
Q55. - (Topic 3)
What is the default action of the split command on an input file?
A. It will break the file into new files of 1,024 byte pieces each.
B. It will break the file into new files of 1,000 line pieces each.
C. It will break the file into new files of 1,024 kilobyte pieces each.
D. It will break the file into new files that are no more than 5% of the size of the original file.
Answer: B
Q56. - (Topic 4)
Which of the following commands can be used to display the inode number of a given file?
A. inode
B. ls
C. ln
D. cp Answer: B
Q57. - (Topic 2)
Which file should be edited to select the network locations from which Debian installation package files are loaded?
A. /etc/dpkg/dpkg.cfg
B. /etc/apt/apt.conf
C. /etc/apt/apt.conf.d
D. /etc/apt/sources.list
E. /etc/dpkg/dselect.cfg
Answer: D
Q58. - (Topic 4)
After moving data to a new filesystem, how can the former path of the data be kept intact in order to avoid reconfiguration of existing applications? (Choose TWO correct answers.)
A. By creating an ACL redirection from the old to the new path of the data.
B. By creating a hard link from the old to the new path of the data.
C. By creating a symbolic link from the old to the new path of the data.
D. By running the command touch on the old path.
E. By mounting the new filesystem on the original path of the data.
Answer: C,E
Q59. - (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
Q60. - (Topic 1)
Which of the following statements is correct when talking about /proc/?
A. All changes to files in /proc/ are stored in /etc/proc.d/ and restored on reboot.
B. All files within /proc/ are read-only and their contents cannot be changed.
C. All changes to files in /proc/ are immediately recognized by the kernel.
D. All files within /proc/ are only readable by the root user.
Answer: C