10 Flashcards
Hardware RAID Level 1: (Select 3 answers)
- Requires at least 2 drives to implement
- Offers improved reliability by creating identical data sets on each drive (failure of one drive does not destroy the array as each drive contains identical copy of the data)
- Is also referred to as disk mirroring
Hardware RAID Level 5
- Requires at least 3 drives to implement
- Offers increased performance and fault tolerance (single drive failure does not destroy the array and lost data can be re-created by the remaining drives)
Hardware RAID Level 6:
- Requires at least 4 drives to implement
- Offers increased performance and fault tolerance (failure of up to 2 drives does not destroy the array and lost data can be re-created by the remaining drives)
Hardware RAID Level 10 (a.k.a. RAID 1+0): (Select 3 answers)
- Requires a minimum of 4 drives to implement
- Is referred to as stripe of mirrors, i.e. a combination of RAID 1 (disk mirroring) and RAID 0 (disk striping)
- Offers increased performance and fault tolerance (failure of one drive in each mirrored pair of disk drives does not destroy the array)
The term “Multipath I/O” refers to a framework that improves fault tolerance and performance by enabling additional, alternate routes for data that is being transferred to and from storage devices
True
A network hardware or software solution designed for managing the optimal distribution of workloads across multiple computing resources is known as:
Load balancer
The process of combining multiple physical network adapters into a single logical interface for increased throughput and redundancy is called:
NIC teaming
What is the name of a device that can provide short-term emergency power during an unexpected main power source outage?
UPS
Which of the following power redundancy solutions would be best suited for providing long-term emergency power during an unexpected main power source outage?
Backup generator
Which of the following would add power redundancy on a server box?
Dual-power supply
Which of the following answers refers to a device designed to distribute (and monitor the quality of) electric power to multiple outlets?
Managed Power Distribution Unit (Managed PDU)
A dedicated local network consisting of devices providing data access is called:
SAN
Restoring data from an incremental backup requires: (Select 2 answers)
- All copies of incremental backups made since the last full backup (
- Copy of the last full backup
A file-based representation of the state of a virtual machine at a given point in time is called:
Snapshot
What type of backups are commonly used with virtual machines?
Snapshot backups