XK0-004 Free Practice Test

A systems administrator needs to install a new piece of hardware that requires a new driver. The driver should be manually installed. Which of the following describes the order of commands required to obtain module information, install the module, and check the log for any errors during module installation?

1. A. lsmod, modprobe, modinfo
2. B. modinfo, insmod, modprobe
3. C. modinfo, insmod, dmesg
4. D. lsmod, insmod, dmesg

Correct Answer: A

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 systems administrator wants the ability to access systems remotely over SSH using RSA authentication. to which of the following files should the RSA token be added to allow this access?

1. A. authorized_keys
2. B. ~/.ssh/ssh_config
3. C. id_rsa.pub
4. D. known_hosts

Correct Answer: C

Which of the following is the BEST reason for not storing database files in the /var directory?

1. A. The /var filesystem is not fast enough for database files.
2. B. The number of files in /var is limited by the available inodes.
3. C. Files in /var do not have strict file permissions.
4. D. If log files fill up /var, it might corrupt the database.

Correct Answer: D

A junior Linux administrator is updating local name resolution to support IPv6. The administrator issues the command cat /etc/hosts and receives the following output: 127.1.1.1 localhost
Which of the following actions should the administrator perform to accomplish this task?

1. A. Modify the /etc/hosts file, and add the ipv6 localhost entry to the file.
2. B. Modify the /etc/hosts file, and add the ::1 localhost entry to the file.
3. C. Modify the /etc/hosts file, and add the ipv4 localhost entry to the file.
4. D. Modify the /etc/hosts file, and add the 0.0.0.0 localhost entry to the file.

Correct Answer: D