CompTIA Updated SK0-005 Exam Questions and Answers by abdurrahman

A subnet mask is a number that distinguishes the network address and the host address within an IP address1. A subnet mask allows network traffic to understand IP addresses by splitting them into the network and host addresses. If the subnet mask is incorrect, the network traffic may not be able to determine the correct destination for the packets, and only reach some of the servers that have similar IP addresses. For example, if the new virtual server has an IP address of 192.168.1.100 and a subnet mask of 255.255.0.0, it can only communicate with servers that have IP addressesin the range of 192.168.0.0 to 192.168.255.2552. To fix this issue, the systems administrator needs tocheck and correct the subnet mask of the new virtual server according to the network configuration.

Active-active is a configuration in which both nodes of a redundant system respond to service requests whenever possible. It can improve the performance, availability, and load balancing of the system by distributing the workload among the nodes. However, it also requires more synchronization and coordination between the nodes to avoid conflicts or errors. Verified References: [Active-active], [Redundant system]

DLP (Data Loss Prevention) software is a type of security software that monitors and controls the transfer of sensitive or confidential data outside the organization. DLP software can prevent data breaches, data leaks, or data theft by blocking, encrypting, or alerting on unauthorized data transfers. DLP software can be applied to various channels, such as email, web, cloud, or removable devices.

In this scenario, the human resources analyst is attempting to email the records for new employees to an outside payroll company. The records for newemployees may contain sensitive or confidential data, such as personal information, tax information, or bank account information. The DLP software may detect this data and block the email from being sent outside the company, as it may violate the company’s data protection policy or regulations. The DLP software may also generate an error message to inform the analyst of the reason for the rejection.

The administrator should perform an antivirus scan on all servers within the cluster and reboot each server, and block access to 208.206.12.9 from all servers on the network. These actions will help to remove any malware that may have infected the application server and prevent any further unauthorized traffic to the known-bad public IP address. An antivirus scan can detect and remove malicious software that may be sending data to an external source, and a reboot can clear any temporary files or processes that may be related to the malware. Blocking access to 208.206.12.9 from all servers on the network can prevent any future attempts to communicate with the malicious IP address.