Which type of interface connects SSD drives to the storage array controller?
Answer(s): A
an interface is a logical connection that enables data transfer between devices. There are different types of interfaces that can connect SSD drives to the storage array controller, such as SATA, SAS, PCIe, and NVMe.One of the types of interface that can connect SSD drives to the storage array controller is NVMe1. NVMe stands for Non-Volatile Memory Express and it is a protocol that enables high-performance communication between SSDs and PCIe bus. NVMe reduces latency and increases throughput by using multiple parallel queues and direct memory access.
What is a feature of 5G technology?
Answer(s): C
5G technology is the fifth generation of cellular mobile networks. It is a significant upgrade from 4G, offering faster speeds, improved latency, and increased capacity. 5G networks are designed to provide higher WAN bandwidth, allowing for faster data transmission and higher download speeds. Additionally, 5G networks offer improved coverage, allowing more devices to be connected at once, and they offer greater mobility, allowing devices to move between networks without a loss of connection.
What is the lowest to highest order of I/O performance among these storage devices?
Answer(s): B
According to the web search results, I/O performance is a measure of how fast data can be transferred between a storage device and a host system1. It depends on various factors such as the type of storage device, the interface, the workload, and the response time12.The four storage devices you mentioned are:SCM: Storage Class Memory, a type of persistent memory that can retain data even when power is lost. It can support both byte-level and block-level data access and has speeds nearly as fast as DRAM3.SSD: Solid State Drive, a type of flash-based storage device that uses NAND chips to store data. It has no moving parts and offers faster read/write speeds than HDDs. It can use different interfaces such as SATA or NVMe45.DRAM: Dynamic Random Access Memory, a type of volatile memory that loses data when power is lost. It is used as main memory in computers and offers very fast access speeds but consumes more power than SCM3.SATA: Serial ATA, an interface standard for connecting storage devices such as HDDs or SSDs to a host system. It offers lower bandwidth and performance than NVMe but is more widely compatible4. the correct order of I/O performance from lowest to highest among these storage devices is B. SATA > SSD> SCM --> DRAM. This is because SATA has lower bandwidth than NVMe which most SSDs use; SSDs have lower latency than HDDs but higher latency than SCM; SCM has lower latency than SSDs but higher latency than DRAM; and DRAM has the lowest latency and highest bandwidth among them all.
What is an accurate statement about governance?
Governance is a practice of creating and enforcing policies that guide an organization in how it should be managed and operated. This includes developing strategies, setting operational rules, and making decisions that direct how an organization should be run. It is important to note that governance is not limited to only IT-related matters, as it encompasses all aspects of the organization, from financial to personnel management.
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