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CompTIA Linux+

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QUESTION 1
A user, jsmith, needs access to database files located on a server. Which of the following will add jsmith to the “dba”
group and preserve existing group memberships?
A. usermod –a –G dba jsmith
B. usermod –g dba jsmith
C. useradd –g dba jsmith
D. groupmod dba –u jsmith
Correct Answer: AC
According to the reference given below. Both AC is correct. Reference: https://www.cyberciti.biz/faq/howto-linux-adduser-to-group/

QUESTION 2
A systems administrator notices a large number of autoloaded device modules are no longer needed and decides to do
a cleanup of them. Which of the following commands will accomplish this task?
A. rmmod -c
B. depmod -r
C. insmod -c
D. modprobe -r
Correct Answer: D
Reference: http://ccrma.stanford.edu/planetccrma/man/man8/modprobe.8.html

QUESTION 3
A Linux administration is using a Linux system as a router. During the tests, the administrator discovers that IP packets
are not being sent between the configured interfaces. Which of the following commands enables this feature for IPv4
networks?

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CompTIA XK0-004 Practice Test Questions Answers

QUESTION 1
A Linux systems administrator installed a new web server, which failed while attempting to start. The administrator
suspects that SELinux is causing an issue and wants to temporarily put the system into permissive mode. Which of the
following would allow the administrator to accomplish this?
A. echo SELINUX=PERMISSIVE >> /etc/sysconfig/selinux
B. setenforce 0
C. sestatus 0
D. chcon httpd_sys_content_t /var/
Correct Answer: B

QUESTION 2
Using which of the following control mode commands is the correct way to substitute all occurrences of /dev/sdc with
/dev/sdd while editing a file in vi?
A. :s//dev/sdc//dev/sdd
B. :s/\/dev\/sdc/\/dev\/sdd/g
C. :s/\/dev\/sdc/\/dev\/sdd
D. :%s/\/dev\/sdc/\/dev\/sdd
Correct Answer: A

QUESTION 3
A Linux administrator installed a new network adapter and temporarily disabled the network service from starting on
boot. The partial output of chkconfig is as follows:

xk0-004 exam questions-q3

Which of the following commands BEST describes how the administrator should re-enable the network service?

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