DEA-1TT5 Associate - Information Storage and Management (Version 5.0) Question and Answers

Differential backups are more efficient than incremental backups because, instead of backing up only the changes made since the last backup, they back up all of the data that has changed since the last full backup. This means that, unlike incremental backups, the size of the differential backup is not limited and can expand to contain more data than an incremental backup. Additionally, differential backups are faster to restore since they only need to read the differential backup and last full backup, rather than all of the incremental backups.

In a RAID 1 array, data is mirrored across two disks. So when a host sends one write I/O to the array, the array will perform two write I/Os to store the data on both disks. The other options are incorrect because they do not accurately reflect the number of write I/Os required in a RAID 1 array.

FC SANs components include network adapters, cables, and interconnecting devices. The interconnecting devices can be FC switches or FC directors, which are more scalable and reliable than FC hubs. The ports on these devices can be FC E_Ports, which connect two switches or directors together to form a fabric, or FC F_Ports, which connect to host or storage devices with FC N_Ports.

Local replication is a technique that replicates data within the same array or the same data center1. Local replication can enable operational recovery in the event of data loss by providing fast and frequent point-in-time copies of data that can be used for restore and restart operations23.

Enables operational recovery in the event of a site-level disaster is not a benefit of performing local replication. Local replication does not protect data from site-level disasters because it replicates data within the same site1. To protect data from site-level disasters, remote replication is needed to replicate data at a remote site2.

Provides disaster recovery as a service offering is not a benefit of performing local replication. Disaster recovery as a service (DRaaS) is a cloud-based service that provides backup and recovery capabilities for an organization’s data and applications4. DRaaS typically uses remote replication to store data in cloud storage locations that are geographically dispersed4.

Reduces the time to perform data backups is not a benefit of performing local replication. Data backups are different from data replication because they create secondary copies of data that are stored separately from primary copies and can be retained for longer periods5. Data backups may use local or remote replication as part of their process, but they also involve other steps such as deduplication, compression, encryption and verificatio

The backup server is the component that maintains the catalog containing details about the backups that have occurred. The catalog is a database that stores information about the backup jobs, such as the date, time, and type of backup that occurred, as well as the files that were backed up. The catalog also stores other information, such as the status of the backup jobs, as well as the type of data that was backed up. The backup server is responsible for managing the catalog and ensuring that the details stored in the catalog are accurate.

Automating the operations management process in a data center environment can help mitigate operational management risks. Automation can reduce the likelihood of human error, which can lead to outages or other disruptions. By automating routine tasks, such as patch management, configuration updates, and resource allocation, IT staff can focus on higher-value activities that drive innovation and improve the user experience. Additionally, automation can improve operational efficiency, reduce costs, and ensure operational agility, but it does not eliminate operational costs. Reference: Section 2.6.2 Automation of IT Operations, page 127.

Signature-based IDPS uses a database that contains known attack patterns or signatures. Each signature is associated with a particular type of attack and the IDPS will look for those patterns in order to identify malicious activity. For example, if the signature in the database is associated with a buffer overflow attack, the IDPS will look for that particular pattern of attack in order to detect the attack.