CompTIA XK0-004 問題集

質問 1：
A junior administrator issues the following commands on a Linux server:

The next day, the junior administrator is unable to edit the file. Which of the following would resolve this issue?
A. Chmod o+rwx /home/junior_admin/tasklist
B. Chmod $+x /home/junior_admin/tasklist
C. Chmod g+s /home/junior_admin/tasklist
D. Chmod 666 /home/junior_admin/tasklist
正解：D

質問 2：
An administrator is analyzing a Linux server which was recently hacked.
Which of the following will the administrator use to find all unsuccessful login attempts?
A. pam_tally2
B. nsswitch
C. passwd
D. faillock
正解：A

質問 3：
Which of the following is the template for the grub.cfg file?
A. /etc/default/grub
B. /etc/grub2.cfg
C. /boot/efi
D. /etc/sysct1.conf
正解：A

質問 4：
A newly installed desktop is unable to connect to networked resources. The systems administrator executes various commands and reviews the following output snippets:

Which of the following should the systems administrator try NEXT to restore connectivity?
A. dig -x @127.0.0.1 192.168.1.10
B. arp -s 20:ad:1f:ab:10:0f 192.168.1.10
C. killall -HUP NetworkManager
D. ip link set wlo1 up
E. route add -net 192.168.1.0 netmask 255.255.255.0
正解：D

質問 5：
A Linux user uses a VPN to securely access the company's systems from a laptop.
Which of the following protocols are MOST likely used to secure the VPN connection? (Choose two.)
A. SFTP
B. VNC
C. HTTP
D. SELinux
E. IPSec
F. SSL/TLS
正解：E,F

質問 6：
A directory called /employee is shared with many employees in a company. New hardware was acquired, and the systems administrator needs to back up all files in /employee before the server is replaced.
Which of the following commands should be used to back up all the files and compress them to use little space in the filesystem?
A. tar -zxvf backup.tar.gz /employee
B. tar -Cvf backup.tar.gz /employee
C. tar -Tpf backup.tar.gz /employee
D. tar -zcvf backup.tar.gz /employee
正解：D

質問 7：
A systems administrator is using a Linux laptop to troubleshoot network devices. The administrator runs the following command:
# screen /dev/USB0
Which of the following does this command MOST likely accomplish?
A. It logs all troubleshooting output from the monitor to external USB0 storage.
B. It allows the administrator to interact with the character device connected to USB0.
C. It copies the network traffic from the device connected to USB0 and screens out rejected traffic.
D. It monitors USB0 waiting for a network device to be connected to it as an Ethernet device.
正解：B