XK0-004 Free Practice Test

A user wants to list the lines of a log, adding a correlative number at the beginning of each line separated by a set of dashes from the actual message. Which of the following scripts will complete this task?

1. A. Option A
2. B. Option B
3. C. Option C
4. D. Option D

Correct Answer: D

A Linux administrator built a GitLab server. Later that day, a software engineer tried to access the server to upload the repository during the final step of installation. The software engineer could not access the website. Which of the following firewall rules would allow access to this site?

1. A. iptables –A INPUT –p tcp –m multiport --dports 80,443 –m conntrack –cstate NEW, ESTABLISHED –j ACCEPT
2. B. iptables –A INPUT –p tcp –m multiport --dports 80,443 –m conntrack –cstate ESTABLISHED –j ACCEPT
3. C. iptables –A INPUT –p tcp –m multiport --dports 80,443 –m conntrack –cstate RELATED, ESTABLISHED –j ACCEPT
4. D. iptables –A INPUT –p tcp –m multiport --dports 80,443 –m conntrack –cstate NEW, ESTABLISHED –j REJECT

Correct Answer: C

A Linux system is running normally when the systems administrator receives an alert that one application spawned many processes. The application is consuming a lot of memory, and it will soon cause the machine to become unresponsive. Which of the following commands will stop each application process?

1. A. kill ‘pidof application’
2. B. killall application
3. C. kill -9 ‘ps –aux | grep application’
4. D. pkill -9 application

Correct Answer: B

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?

1. A. lspci
2. B. lsusb
3. C. cat /proc/USB
4. D. modprobe -–usb

Correct Answer: B

A Linux administrator needs to remotely update the contents of the www.comptia.org/contacts URL.
Which of the following commands would allow the administrator to download the current contents of the URL before updating?

1. A. curl www.comptia.org/contacts
2. B. dig www.comptia.org/contacts
3. C. apt-get www.comptia.org/contacts
4. D. yum list www.comptia.org/contacts

Correct Answer: A