CISA Domain 4 Latest Update Graded A+

CISA Domain 4 Latest Update Graded A+ Alternate site Alternate site should be selected with consideration that it will be located beyond the geographic area affected by any disruptive events considered in the plan. Also, regardless the type of site, the plan will need to include provision to establish network communication to the alternate site. The plan should provide for redundant solutions to ensure that communications can be established to the alternate site following interruption of normal processing by any anticipated cause. Alternative Routing Is a method of routing information via an alternate medium such as copper cable or fiber optics. This involves the use of different networks, circuits or end points should the normal network be unavailable. Would ensure that the network would continue if a communication device fails or if a link is severed because message rerouting could be automatic. Application clusters Active-Passive - application only runs on one active node, while the other passive nodes are used only if the application fails on the active node. One of the major ways to ensure application availability and DR Active-Active - the application runs on every node of the cluster. With this setup, cluster agents coordinate the information processing between all of the nodes, providing load balancing and coordinating concurrent data access. Puts a greater demand on network latency. Often, orgs will use a combination of cluster setups. Before and After Screen Images is the best way to ensure that the appropriate data have been updated in a direct data change. The screen shots would include the data prior to and after the change. Also, it ensures accountability when updating data directly in a production database Capacity Management The planning and monitoring of computing and network resources to ensure that the available resources are used efficiently and effectively. Ensures that all current and future capacity and performance aspects of the business requirements are provided in a cost- effective manner. The capacity plan should be developed based on input from both user and IS management to ensure that business goals are achieved in the most efficient and effective way. This plan should be reviewed and updated at least annually. Key information includes: CPU utilization, computer storage utilization, telecommunications, LAN, WAN bandwidth utilization, I/O channel utilization, number of users, new technologies, new applications, SLAs Change Approvals IS operations are responsible for ensuring the integrity of the production environment and often serve as the final approvers of any changes to production Change Management cost-benefit and feasibility studies should be reviewed before the changes are accepted and approved. Clustering allows two or more servers to work as a unit so that when one of them fails, the other takes over. Cold site is ready to receive equipment but does not offer any components at the site in advance of the need. Facilities with the space and basic infrastructure adequate to support resumption of operations, but lacking any IT or communications equipment. Configuration Management Is widely accepted as one of the key components of any network because it establishes how the network will function internally and externally. It also deals with the management of configuration and monitoring performance. Configuration management ensures that the setup and management of the network is done properly, including managing changes to the configuration, removal of default passwords