Storage Fundamentals & SAN Technologies Test.odt, Cheat Sheet of Computer Science

Download Storage Fundamentals & SAN Technologies Test.odt and more Cheat Sheet Computer Science in PDF only on Docsity! How many distinct states can be stored by a multi-level SSD cell? Two four eight sixteen ----- Which statements correctly describe the use of SAS edge expanders? (Select two.) Server-attached storage configurations typically use edge expanders. x When an edge expander is incorporated into the architecture, up to 128 segments can exist within a SAS domain. X-- Edge expanders can address up to 128 SAS addresses or drives in a segment. X-- There can only be one edge expander per SAS domain. x Each SAS domain must have one primary and one backup edge expander. Which statements correctly describe the Solid State Drives? (Select three.) Multi-Level Cell (MLC) drives cost less and provide higher storage densities. x-- Single-Level Cell (SLC) drives provide faster write performance and greater reliability x-- MLC technology is based on two bit values per cell—either zero or one. x Four distinct states can be stored in each SLC. x Server storage uses predominantly MLC technology x SSDs connect to the host system using an optimized ESDI communication protocol. X-- What are the two types of expanders used in SAS topologies? (Select two. Core x-- Ring Fan out edge x-- cascaded Which connectivity component combines the functions of the host bus adapters, Ethernet network interface cards, the Fibre Channel over Ethernet protocol, and the Converged Enhanced Ethernet protocol? SDN controller multifunction HBA Fibre Channel switch converged network adapter xX In which situations is NPIV useful? (Select two.) In virtual server environments, where each virtual server must see only its own SAN-based storage In server blade environments, where the administrator must be able to fine-tune the bandwidth of each server blade adapter port. in server blade environments, where the administrator requires simplified configuration and administration of server-to-SAN connections x-- in redundant SAN environments, where transparent and near-instantaneous path failover is required for business-critical applications x-- in complex SAN configurations, where hard and soft zoning must coexist and fabric segmentation is likely to occur Which HPE networking product delivers NPIV-based Fibre Channel connectivity for server blades? FlexFabric Virtual Switches Virtual Connect (VC) modules FlexNetwork Virtual Services Routers (VSRs) x-- Virtual Application Network (VAN) SDN controllers Which addressing scheme is used by the Fibre Channel switch ports to achieve the 16 million address space 16 x-- 24 32 48 Which fabric zoning approach has the following attributes? ● is the minimum required zoning method ● prevents interaction of the HBAs with incompatible operating systems ● allows multiple HBAs with the same operating system to be grouped with the accessed storage port zoning by HBA zoning by OS xX zoning by application zoning by LUN What happens when two or more switches are joined together by ISLs but they do not communicate with each other zone divergence mesh cascaded X-- core edge Which RAID technology has the following characteristics? • Does not have a performance penalty for read operations • Does have a performance penalty on write operations • Can handle two disk failures • Requires a minimum of four disk drives • Reduces storage capacity by two disk drives 1 1+0 x 5 6 Which metric measures drive reliability in terms of percentage of drive failures in one year? MTBF AFR MTTF DFR X-- Match each storage architecture with its correct description. San = dedicated XX nas = file levelXX DAS = traditional XX Which storage tier is called near line, employs backup devices such as tapes and tape libraries, and is ideal for file recovery? 2 3 x-- 4x 5 Drag and drop the label from the right to to match with the correct storage topology.   A = DAS XX B = NAS XX C =- SAN XX Match each storage architecture with its main advantages SAN = Performance NAS = Speed DAS = Simple partially What are the fundamental requirements of storage area networks (SANs)? (Select two.) Low cost x-- high availability x-- high performance wide interoperability ease of management Arrange the steps to properly boot SAN components into the correct order Fist = power san second = boot third = storage fourth = confirm partially In this SAN architecture, which label identifies the Host Bus Adapters (HBAs)? 1 XX 2 3 4 What were the primary reasons Fibre Channel was established in 1988? (Select two.) to achieve high-speed data transfers between servers and storage systems to increase data transfer speeds between virtual servers in enterprise environments X-- to increase the number of connected devices X-- to address larger SCSI disk volumes X-- to separate the connection information from the actual information to be transferred Match the Fibre Channel terminology with the correct definition Node = A hardware Port = AN addressable Link = A copper HBA = A connection partially Which Fibre Channel port type provides the connection between a Fibre Channel router and a Fibre Channel switch? FX X-- TE EX GL Which term refers to the reduction in the power of the light signal as it is transmitted? attenuation modulation refraction dispersion x-- Which IP storage protocol is a gateway-to-gateway network standard that enables the implementation of Fibre Channel functionality over an IP network? iFCP FcoE FCIP X-- iSCSI What was the primary design goal of Fibre Channel over Ethernet? to increase performance to achieve higher reliability to increase transmission distance to provide I/O consolidation XX Which statements about Native Command Queuing are correct? (Select three.) It increases performance of SATA drives It increases bandwidth of SAS drives used in SANs It optimizes performance of cross-fabric traffic when multi-function routers are used It is a function of HPE Smart Array controllers x It reduces unnecessary disk drive head movement x It optimizes the order in which read and write operations are executed by SATA disk drives x What is the name of the technique used to increase the overall endurance of NAND-based Solid State Drives that continuously remaps logical SCSI blocks to different physical pages