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Which of the following commands will remediate and help resolve the issue?
Some servers in an organization have been compromised. Users are unable to access to the organization’s web page and other services. While reviewing the system log, a systems administrator notices messages from the kernel regarding firewall rules: Which of the following commands will remediate and help resolve the issue? A)...
Which of the following commands should the systems administrator execute NEXT to troubleshoot this issue?
A systems administrator is notified that the mysqld process stopped unexpectedly. The systems administrator issues the following command: sudo grep Ci -r ‘out of memory’ /var/log The output of the command shows the following: kernel: Out of memory: Kill process 9112 (mysqld) score 511 or sacrifice child. Which of the...
Which of the following commands is the correct way to accomplish this task?
A systems administrator needs to reconfigure a Linux server to allow persistent IPv4 packet forwarding. Which of the following commands is the correct way to accomplish this task?A . echo 1 > /proc/sys/net/ipv4/ipv_forward B. sysctl -w net.ipv4.ip_forward=1 C. firewall-cmd --enable ipv4_forwarding D. systemctl start ipv4_forwardingView AnswerAnswer: B
Which of the following will allow the administrator to determine the FIRST command that is executed inside the container right after it starts?
A newly created container has been unable to start properly, and a Linux administrator is analyzing the cause of the failure. Which of the following will allow the administrator to determine the FIRST command that is executed inside the container right after it starts?A . docker export <container_id> B. docker...
Which of the following commands should be used to resolve the issue?
An administrator deployed a Linux server that is running a web application on port 6379/tcp. SELinux is in enforcing mode based on organization policies. The port is open on the firewall. Users who are trying to connect to a local instance of the web application receive Error 13, Permission denied....
Which of the following commands should replace the <CONDITIONAL> string?
A user is asking the systems administrator for assistance with writing a script to verify whether a file exists. Given the following: Which of the following commands should replace the <CONDITIONAL> string?A . if [ -f "$filename" ]; then B. if [ -d "$filename" ]; then C. if [ -f...
Which of the following should the administrator do?
To harden one of the servers, an administrator needs to remove the possibility of remote administrative login via the SSH service. Which of the following should the administrator do?A . Add the line DenyUsers root to the /etc/hosts.deny file. B. Set PermitRootLogin to no in the /etc/ssh/sshd_config file. C. Add...
Which of the following commands would resolve the issue?
An administrator transferred a key for SSH authentication to a home directory on a remote server. The key file was moved to .ssh/authorized_keys location in order to establish SSH connection without a password. However, the SSH command still asked for the password. Given the following output: Which of the following...
Which of the following commands will resolve this issue?
A Linux user reported the following error after trying to connect to the system remotely: ssh: connect to host 10.0.1.10 port 22: Resource temporarily unavailable The Linux systems administrator executed the following commands in the Linux system while trying to diagnose this issue: Which of the following commands will resolve...
Which of the following files holds the system configuration for journal when running systemd?
Which of the following files holds the system configuration for journal when running systemd?A . /etc/systemd/journald.conf B. /etc/systemd/systemd-journalctl.conf C. /usr/lib/systemd/journalctl.conf D. /etc/systemd/systemd-journald.confView AnswerAnswer: A
