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                     C o mpTIA
XK0-004
CompTIA Linux+ Certification Exam
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QUESTION: 53 
Which of the following is the purpose of the vmlinux file on a Linux system? 
A. To prevent a Linux kernel panic 
B. To start a Linux virtual machine 
C. To provide the executable kernel for the system 
D. To enable resource access to the network 
Answer: C 
QUESTION: 54 
Ann, a junior systems administrator, is required to add a line to the /etc/yum.conf file. 
However, she receives the following error message when she tries to add the line: 
Ann performs some diagnostics to attempt to find the root cause: 
 
 
Which of the following commands should Ann execute to write content to /etc/yum? 
 
 
A. chmod 755 /etc/yum.conf 
B. setfacl –m m:rw /etc/yum.conf 
C. chattr –I /etc/yum.conf 
D. setenforce 0  
 
 
Answer: A 
 
 
QUESTION: 55 
A Linux administrator needs to take stock of USB devices attached to the system. Which 
of the following commands would be BEST to complete this task? 
 
 
A. lspci 
B. lsusb 
C. cat /proc/USB 
D. modprobe -–usb 
 
 
Answer: B 
 
 
QUESTION: 56 
Given the output below: 
 
 
 
Which of the following commands can be used to remove MyPhoto.jpg from the current 
directory? 
 
 
A. unlink ./MyPhoto.jpg 
B. del Pictures/photo.jpg 
C. rm –rf ./Pictures 
D. rm –f MyPhoto.jpg 
E. ln –rm ./Pictures/photo.jpg  
 
 
Answer: E 
 
 
QUESTION: 57 
Which of the following server roles would assign a host IP address? 
 
 
A. DHCP 
B. NTP 
C. DNS 
D. SSH  
 
 
Answer: A 
 
 
QUESTION: 58 
Which of the following commands would show the default printer on a Linux system? 
 
 
 
A. lpr 
B. lpq 
C. lpstat 
D. lspci  
 
 
Answer: B 
 
 
QUESTION: 59 
A system administrator has set up third-party log aggregation agents across several 
cloud instances. The systems administrator wants to create a dashboard of failed SSH 
attempts and the usernames used. Which of the following files should be watched by the 
agents? 
 
 
A. /var/log/audit/audit.log 
B. /var/log/kern.log 
C. /var/log/monitor 
D. /etc/rsyslog.conf  
 
 
Answer: D 
 
 
QUESTION: 60 
A systems administrator must clean up all application files in the directory /var/log/app. 
However, the company’s security policy requires the files to be kept on the backup 
server for one year. The Linux server has only the tar and bzip2 packages installed. 
Which of the following commands will package and compress the files? 
 
 
A. tar –zcvf applicationfiles.tar.bz2 /var/log/app/* 
B. tar –jcvf applicationfiles.tar.bz2 /var/log/app/* 
C. tar –cvf applicationfiles.tar.bz2 /var/log/app/* 
D. tar –xvf applicationfiles.tar.bz2 /var/log/app/*  
 
 
Answer: C 
 
 
QUESTION: 61 
In order to comply with new security policies, an administrator needs to prevent the SSH 
server from using insecure algorithms. Which of the following files should be edited to 
accomplish this? 
 
 
A. /etc/ssh/sshd_config 
B. /etc/ssh/ssh_config 
C. ~/.ssh/ssh_config 
D. /etc/ssh/known_hosts  
 
 
Answer: A 
 
 
QUESTION: 62 
Which of the following configuration files should be modified to disable Ctrl-Alt-Del in 
Linux? 
 
 
A. /etc/inittab 
B. ~/.bash_profile 
C. /etc/securetty 
D. /etc/security/limits.conf 
 
 
Answer: A 
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