SK0-005 Exam Dumps - CompTIA Server+ Certification Exam

The first action that the administrator should take before swapping out the GPU card inside a server is to shut down the server. This is to ensure that the server is not running any processes that might be using the GPU card, and to prevent any damage to the hardware or data loss due to sudden power loss. Shutting down the server also reduces the risk of electrostatic discharge (ESD) that might harm the components. Reference: https://pcgearhead.com/installing-a-new-gpu/

The best course of action for the company is to upgrade the application package to fix the known vulnerability. A vulnerability is a weakness or flaw in an application that can be exploited by an attacker to compromise the security or functionality of the system. Upgrading the application package means installing a newer version of the application that has patched or resolved the vulnerability. This way, the company can prevent potential attacks that may exploit the vulnerability and cause damage or loss.

The domain search variable is used to specify a list of domains that are appended to a hostname when resolving it. If the servername is not fully qualified, the resolver will try each domain in the list until it finds a match or fails. By configuring the domain search variable, the technician can avoid typing the full domain name every time they want to ping a server. Verified References: [How to configure DNS suffixes on Linux systems]

The correct answer is D. A virtual switch.

A virtual switch is a software-based network device that connects the virtual machines (VMs) in a virtual environment and allows them to communicate with each other and with the physical network. A virtual switch can also create and manage virtual LANs (VLANs), which are logical segments of a network that separate the traffic of different VMs or groups of VMs. A VLAN needs a DHCP server to assign IP addresses to the VMs that belong to it. A virtual switch can act as a DHCP relay agent and forward the DHCP requests from the VMs to the DHCP server on the physical network. This way, the VMs can receive correct IP addresses for their VLANs123

A virtual router is a software-based network device that routes packets between different networks or subnets. A virtual router can also create and manage VLANs, but it is not necessary for a VM to receive a correct IP address. A virtual router can be used to provide additional security, redundancy, or load balancing for the VMs12

A host NIC is a physical network interface card that connects the host machine to the physical network. A host NIC can also support VLAN tagging, which allows the host machine to communicate with different VLANs on the network. However, a host NIC alone cannot ensure that a VM receives a correct IP address for its VLAN. The host NIC needs to be connected to a virtual switch that can relay the DHCP requests from the VMs to the DHCP server12

A VPN is a virtual private network that creates a secure tunnel between two or more devices over the internet. A VPN can be used to encrypt and protect the data traffic of the VMs, but it is not related to the configuration of VLANs or IP addresses. A VPN does not affect how a VM receives a correct IP address for its VLAN14

A vNIC is a virtual network interface card that connects a VM to a virtual switch or a virtual router. A vNIC can also support VLAN tagging, which allows the VM to communicate with different VLANs on the network. However, a vNIC alone cannot ensure that a VM receives a correct IP address for its VLAN. The vNIC needs to be connected to a virtual switch or a virtual router that can relay the DHCP requests from the VMs to the DHCP server12

This is the best command to find out which commands can be used by a user with sudo privileges because it lists the allowed and forbidden commands for a given user or role. The -l option stands for list, and the -U option specifies the user name. The output of this command will show what commands can be executed with sudo by that user on that server. References: https://www.sudo.ws/man/1.8.13/sudo.man.html

This is the best definition of overprovisioning in a virtual server environment because it means allocating more CPU, memory, disk, or network resources to the virtual machines than what is actually available on the physical host. This can lead to performance issues and resource contention. References: https://www.hpe.com/us/en/insights/articles/10-virtualization-mistakes-everyone-makes-1808.html

A method of application hardening is installing the latest patches. Application hardening is a process of reducing the attack surface and vulnerabilities of an application by applying security measures and best practices. Installing the latest patches is one way to harden an application, as patches are updates that fix bugs, errors, or security issues in an application. By installing the latest patches, an application can be protected from known exploits or threats.

References: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 3, Lesson 3.5, Objective 3.5

RTO (Recovery Time Objective) is a metric that measures how much downtime an organization can tolerate during an unplanned outage before it affects its business continuity and reputation. RTO is usually expressed in hours or minutes and is determined by the criticality of the business processes and the impact of the outage on the revenue, customers, and stakeholders. RTO helps to define the recovery strategy and the resources needed to restore the normal operations as quickly as possible. Verified References: [RTO vs RPO]