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A datacenter in a remote location lost power. The power has since been restored, but one ol the servers has not come back online. After some investigation, the server is found to still be powered off. Which of the following is the BEST method to power on the server remotely?
Out-of-band console is a tool that can be used to command a remote shutdown of a physical Linux server. Out-of-band console is a method of accessing a server's console through a dedicated management port or device that does not rely on the server's operating system or network connection. Out-of-band console can be used to power cycle, reboot, update firmware, monitor performance, and perform other tasks remotely even if the server is unresponsive or offline. Crash cart is a mobile unit that contains a keyboard, monitor, mouse, and other tools that can be used to troubleshoot a server on-site, but it requires physical access to the server. IP KVM (Internet Protocol Keyboard Video Mouse) switch is a hardware device that allows remote access to multiple servers using a web browser or a client software, but it requires network connectivity and may not work if the SSH connection is lost. RDP (Remote Desktop Protocol) is a protocol that allows remote access to a Windows server's graphical user interface, but it does not work on Linux servers and requires network connectivity. Reference: https://www.techopedia.com/definition/13623/crash-cart https://www.techopedia.com/definition/13624/kvm-switchhttps://www.techopedia.com/definition/3422/remote-desktop-protocol-rdp
A technician learns users are unable to tog in to a Linux server with known-working LDAP credentials. The technician logs in to the server with a local account and confirms the system is functional can communicate over the network, and is configured correctly However, the server log has entries regarding Kerberos errors. Which of the following is the MOST likely source of the issue?
Kerberos is a network authentication protocol that uses tickets to allow clients and servers to prove their identity to each other. Kerberos relies on accurate time synchronization between the parties involved, as the tickets have expiration dates and timestamps. If the system clock of a Linux server is off by more than five minutes from the LDAP server or the domain controller, the Kerberos authentication will fail and generate errors. A local firewall is unlikely to block authentication requests if the server can communicate over the network and is configured correctly. The users' passwords are not relevant if theyare known-working LDAP credentials. The server has access to the LDAP host if it can communicate over the network and is configured correctly. Reference:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/identity_management_guide/kerberos_errors
https://www.ibm.com/docs/en/aix/7.2?topic=authentication-kerberos-time-synchronization
A server technician installs a new NIC on a server and configures the NIC for IP connectivity. The technician then tests the connection using thepingcommand. Given the following partial output of thepingandipconfigcommands:
Which of the following caused the issue?
The ping command output shows that the NIC has an IP address of 192.168.1.100 and a default gateway of 192.168.1.1. However, when the technician tries to ping the default gateway, the reply comes from another IP address: 192.168.1.101. This means that there is another device on the network that has the same IP address as the default gateway, and it is responding to the ping request instead of the intended destination.
A duplicate IP address can cause network connectivity problems, such as packet loss, routing errors, or unreachable hosts. To resolve this issue, the technician should either change the IP address of the default gateway or the device that is conflicting with it, or use DHCP to assign IP addresses automatically and avoid conflicts.
The other options are not correct because they do not explain the ping output. An incorrect default gateway would cause no reply or a destination unreachable message, not a reply from a different IP address. A DHCP misconfiguration would cause an invalid or no IP address on the NIC, not a duplicate IP address on the network. An incorrect routing table would cause routing errors or unreachable destinations, not a reply from a different IP address.
https://askleo.com/what_is_ping_and_what_does_its_output_tell_me/
https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/ping
Which of the following encryption methodologies would MOST likely be used to ensure encrypted data cannot be retrieved if a device is stolen?
Encryption at rest is a type of encryption methodology that would most likely be used to ensure encrypted data cannot be retrieved if a device is stolen. Encryption at rest is a process of encrypting stored data on a device such as a hard drive, SSD, USB flash drive, or mobile device. This way, if the device is lost or stolen, the data cannot be accessed without the encryption key or password. Encryption at rest can be implemented using software tools such as BitLocker on Windows or FileVault on Mac OS, or hardware features such as self-encrypting drives or Trusted Platform Module chips. End-to-end encryption is a type of encryption methodology that ensures encrypted data cannot be intercepted or modified by third parties during transmission over a network. Encryption in transit is a type of encryption methodology that protects encrypted data while it is moving from one location to another over a network. Public key encryption is a type of encryption algorithm that uses a pair of keys: a public key that can be shared with anyone and a private key that is kept secret by the owner. Reference: https://www.howtogeek.com/196541/bitlocker-101-what-it-is-how-it-works-and-how-to-use-it/ https://www.howtogeek.com/443611/how-to-encrypt-your-macs-system-drive-removable-devices-and-individual-files/ https://www.howtogeek.com/428483/what-is-end-to-end-encryption-and-why-does-it-matter/https://www.howtogeek.com/195877/what-is-encryption-and-how-does-it-work/
An administrator discovers a misconfiguration that impacts all servers but can be easily corrected. The administrator has a list of affected servers and a script to correct the issue. Which of the following scripting principles should the administrator use to cycle through the list of servers to deliver the needed change?
A loop is a programming construct that allows a block of code to be executed repeatedly until a certain condition is met1. A loop can be used to cycle through a list of servers and run a script on each one of them. For example, in Python, a loop can be written as:
Python
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# Assume servers is a list of server names
forserverinservers:
# Run the script on the server
run_script(server)
A loop can help automate the task of correcting the misconfiguration on all servers, saving time and effort.
Users ate experiencing issues when trying to access resources on multiple servers. The servers are virtual and run on an ESX server. A systems administrator is investigating but is unable to connect to any of the virtual servers. When the administrator connects to the host, a purple screen with while letters appears. Which of the following troubleshooting steps should the administrator perform FIRST?
A purple screen with white letters on an ESX server indicates a kernel panic, which is a fatal error thatcauses the system to crash and stop functioning3.The first troubleshooting step that an administrator should perform is to review the log files, which may contain information about the cause of the error, such as hardware failures, software bugs, or configuration issues4. Checking the power supplies (A) may not be relevant, as the system is still displaying a screen.Reinstalling the ESX server or reseating the processors (D) are drastic measures that may result in data loss or further damage, and should only be attempted after ruling out other possible causes. Reference:3https://kb.vmware.com/s/article/10145084https://www.altaro.com/vmware/vmware-esxi-purple-screen-death/
A server administrator added a new drive to a server. However, the drive is not showing up as available. Which of the following does the administrator need to do to make the drive available?
To make a new drive available on a server, the administrator needs to partition the drive first. Partitioning is a process that divides the drive into one or more logical sections that can be formatted and assigned drive letters or mount points. Partitioning can be done using tools such as Disk Management on Windows or fdisk on Linux. Creating a new disk quota would not help, as disk quotas are used to limit the amount of disk space that users or groups can use on a partition. Configuring the drive as dynamic would not help either, as dynamic disks are used to create volumes that span multiple disks or use RAID features. Setting the compression would not help, as compression is used to reduce the size of files on a partition. Reference: https://www.howtogeek.com/school/using-windows-admin-tools-like-a-pro/lesson2/https://www.howtogeek.com/howto/17001/how-to-format-a-usb-drive-in-ubuntu-using-gparted/
Exam domains verified against: Official CompTIA SK0-005 exam guide, last checked October 2026.
Install and configure physical server hardware including form factors, components, and power systems. Deploy and manage storage technologies such as RAID configurations and storage devices. Perform routine maintenance and environmental controls to keep servers operating reliably.
Install and configure server operating systems and set up services for network functionality. Maintain high availability architectures and virtualization technologies. Manage assets, licensing, and scripting basics for automation and operational efficiency.
Protect server data through physical security, identity management, and access controls. Apply hardening methods to reduce vulnerabilities and decommission systems securely. Implement backup and restore strategies alongside comprehensive disaster recovery planning.
Sample question from this domain above: Q4
Diagnose and resolve hardware failures, storage issues, and operating system or software problems. Address network connectivity problems and security incidents affecting server operation. Use systematic troubleshooting methodology to minimize downtime and restore functionality.
Common questions about the exam itself
