S S SNIA Storage Networking Foundations

Transcription

1 S Number: S Passing Score: 800 Time Limit: 120 min S SNIA Storage Networking Foundations

2 Exam A QUESTION 1 What are two NAS file access protocols? (Choose two.) A. SMB B. iscsi C. NFS D. FCP Correct Answer: AC /Reference: QUESTION 2 Which two security methods will protect iscsi traffic from unauthorized tampering or spoofing? (Choose two.) A. Internet Protocol Security (IPsec) B. ACLs C. encryption at rest D. Challenge Handshake Authentication Protocol (CHAP) Correct Answer: AD /Reference: Reference: QUESTION 3 Which two technologies are part of the Data Center Bridging (DCB) standard? (Choose two.)

3 A. Priority-based Flow Control (PFC) B. Enhanced Transmission Selection (ETS) C. Fibre Channel over IP (FCIP) D. Internet key Exchange (IKE) Correct Answer: AB /Reference: Reference: QUESTION 4 A company is concerned with high space usage on its storage devices, especially during certain periods of time when the same or similar information is being sent or received. Which solution will address this concern? A. data compression B. encryption C. thin provisioning D. deduplication Correct Answer: A /Reference: QUESTION 5 You explain to a customer that storage data compression can be used on most data types. However, there are exceptions. Which file type is an exception?

4 A. *.txt B. *.bat C. *.jpg D. *.ora Correct Answer: CD /Reference: QUESTION 6 You want to replace multiple copies of data, at variable levels of granularity, with references to a shared copy to save storage space and/or bandwidth. Which data reduction method would satisfy the requirement? A. deduplication B. compression C. thin provisioning D. conditioning Correct Answer: A /Reference: Reference: (slide 6) QUESTION 7 What would be placed in a Fibre Channel zone? A. IP address B. MAC address C. IQN of an initiator D. World Wide Port Name (WWPN) Correct Answer: D

5 /Reference: QUESTION 8 What is another name for a storage volume? A. Converged Network Adapter (CNA) B. logical unit number (LUN) C. storage port D. Host Bus Adapter (HBA) /Reference: : LUN is a logical unit storage used to identify a device addressed by the SCSI protocol or storage area network protocols which encapsulate SCSI such as Fibre Chanel or iscsi, etc. QUESTION 9 Which statement describes an N_Port login? A. a process by which a server HBA port logs in to a fabric B. a process by which FC initiators establish sessions with targets C. a process by which users obtain access to a host D. a process by which two FC-4 layer processes establish communication /Reference: Reference: +with+targets&source=bl&ots=qy14qs1k0f&sig=8cgp97dgkeonjrdaa_- nigo087i&hl=en&sa=x&ved=0ahukewig06q64apoahxlqy8khqkrbbgq6aeigtaa#v=onepage&q=n_port%20login%20process%20by%20which%20fc% 20initiators%20establish%20sessions%20with%20targets&f=false

6 QUESTION 10 Your customer has a Fibre Channel SAN environment and has properly zoned servers for storage with front end controller ports. When an administrator goes to initialize a provisioned volume, it is not seen on the server. What would cause this problem? A. an unplugged cable B. a multi-path I/O failure C. a corrupted volume D. improper LUN masking /Reference: QUESTION 11 What are two requirements of a server cluster with regards to storage technologies? (Choose two.) A. a switch fabric B. a file locking mechanism C. a back-end storage database D. shared storage Correct Answer: AD

7 /Reference: QUESTION 12 What are two reasons for using a full backup? (Choose two.) A. When a host needs to have all of the data available to be restored. B. When a host restore can be accomplished across multiple jobs and sessions. C. When a backup requires minimal space consumption. D. When a backup must be available in one backup image. Correct Answer: AD /Reference: QUESTION 13 According to SNIA, what are two valid storage tiering types? (Choose two.) A. storage cache tiering B. host tiering C. application tiering D. cloud tiering Correct Answer: AD /Reference: Reference: QUESTION 14 What is the function of the Fibre Channel name server? A. It retrieves all files from a file store by name. B. It provides service to register Fibre Channel N_Ports.

8 C. It partitions Logical Unit Numbers (LUNs). D. It load balances the SAN traffic. /Reference: : The Fibre Channel Name Server provides a way for N_Ports and NL_Ports to register and discover Fibre Channel attributes. Such attributes include names, addresses, types, features, etc., at various protocol layers, including upper layer protocols specific to Fibre Channel (which are sometimes called "FC-4s"). Communication with the Name Server is via Fibre Channel's CT (Common Transport for Generic Services) using "Information Units" (called CT_IUs) as either requests, responses, or unsolicited. Reference: QUESTION 15 Which software technique reduces the effects of a hardware component failure? A. volume management B. multi-pathing C. LUN masking D. zoning /Reference: QUESTION 16 Which two statements about jumbo Ethernet frames are correct? (Choose two.) A. A jumbo frame is an Ethernet frame with a payload greater than 1500 bytes. B. Jumbo frames are always a fixed standard length of 9000 bytes. C. Jumbo frames can increase the latency on a network due to the transmission of larger frames. D. Jumbo frames enable the transmission of iscsi packets on the IP network. Correct Answer: AC

9 /Reference: : Many networks use 1500-byte MTU size, but the MTU size can be reduced by encapsulation, tunneling or other overlay network protocols. These situations reduce the end-to-end effective MTU size which reduces throughput and network efficiency and sometimes causes application problems. Many network devices now support larger sizes of Ethernet frames and use of Jumbo Frames is becoming more common. This article covers how to determine if your network is capable of using Jumbo Frames and if you should enable this feature. Reference: QUESTION 17 Which storage technology uses optics for connectivity? A. LTO tape B. SAS C. SATA D. Fibre Channel E. iscsi Correct Answer: D /Reference: Reference: QUESTION 18 What should a valid iscsi qualified name include? A. the iscsi string B. date code, in yyyy-mm format C. the WWN string D. initials of company name /Reference: Reference:

10 introduction_to_storage/c_understanding_iscsi_naming_and_addressing.html QUESTION 19 What is an implementation of a secure, multi-tenant cloud environment that is externally available to all users? A. private B. public C. secure D. hybrid /Reference: QUESTION 20 Which interface is used for 40GbE?. A. Twinax B. Small Form Factor pluggable (SFP+) C. multimode fiber (MMF) D. Quad Small Form Factor pluggable (QSFP+) Correct Answer: D /Reference: QUESTION 21 What do RAID 5 sets use to rebuild data?

11 A. Flash memory B. mirroring C. parity D. data quiescing Correct Answer: C /Reference: : Post-failure replacement takes place when the hard drive breaks unexpectedly before a pre-failure replacement can take place. The data on the failed drive must be rebuilt from the parity data on the remaining active drives and written to a hot spare. Post-failure replacement takes considerably longer due to the calculations that must take place to rebuild the data. QUESTION 22 What are two scenarios where using disk replication is a valid risk mitigation strategy? (Choose two.) A. a primary storage array non-recoverable hardware failure B. an extended power failure at the primary site C. information destruction due to a security breach D. system instability due to a bad OS update Correct Answer: AB /Reference: QUESTION 23 Which device would communicate to a DAS? A. NIC B. switch C. HBA D. DB9 serial cable Correct Answer: D

12 /Reference: QUESTION 24 Which two connection sequences are supported for direct-attached storage? (Choose two.) A. Fibre Channel Host HBA -> FC Switch -> FC Target Device on Storage Controller B. Fibre Channel Host HBA -> FC Target Device on Storage Controller C. SAS Host HBA -> SAS Target Storage Controller D. iscsi Host Software Initiator -> Ethernet Switch -> iscsi Host Target Initiator Correct Answer: AD /Reference: QUESTION 25 Which device would be an NDMP server? A. a NAS device B. a disk storage device C. a tape storage device D. a DAS device Correct Answer: A /Reference: Reference: QUESTION 26 Which two technologies use NAND flash memory (non-volatile) technology to store data? (Choose two.) A. quad-level cell (QLC)

13 B. single-level cell (SLC) C. interim-level cell (ILC) D. multi-level cell (MLC) D /Reference: Reference: (page 4) QUESTION 27 Which statement is correct regarding LUNs? A. a method for encapsulating Fibre Channel frames B. a representation of segmented storage space to be provided to their servers C. a scenario where log file servers reach maximum disk capacity D. a method for optimizing LAN traffic /Reference: QUESTION 28 A customer hires you to create an incremental backup scheme. Which solution would you recommend to the customer? A. Create a backup scheme that will do a full backup and then only backup selected files. B. Create a backup scheme that will do a full backup and then only backup changed data since the last backup. C. Create a backup scheme that will do a full backup and then only backup changes since the full backup. D. Create a backup scheme that will do a full backup and then only backup files selected by the host owner.

14 /Reference: QUESTION 29 At which level would you apply LUN masking? A. file system level B. switch level C. zone alias level D. controller level Correct Answer: D /Reference: Reference: QUESTION 30 Which technology uses lossless Ethernet? A. FC B. FCoE C. FCIP D. ifcp /Reference: Reference: QUESTION 31

15 You are consulting for a major financial institution and are verifying their current disaster recovery processes. Your client has a Recovery Point Objective (RPO) of zero. In this scenario what does this mean? A. The customer has a zero data loss requirement. B. The customer has no data at risk. C. The customer has a zero tolerance policy. D. The customer has a zero chance of failure. Correct Answer: C /Reference: Reference: QUESTION 32 What is the name of the process by which a SAN dynamically extends volumes depending on server and application needs? A. Copy On First Write (COFW) B. deduplication C. LUN expansion D. thin provisioning Correct Answer: C /Reference: QUESTION 33 Which backup technique is the slowest in terms of backup time? A. full backup B. incremental backup C. differential backup D. mirror backup

16 Correct Answer: D /Reference: : Mirror style backups without compressions are good to use when you are backing up a lot of files with compression already applied them. For example, music files in mp3 or wma format, images in jpg or png format, videos in dvix, mov, or flv format, and most program install or setup files are already compressed. If you include these files in a normal backup that applies compression you will often notice it will be very slow, and you will gain very little extra compression by doing so. It is best to set up separate backup jobs for compressed files and non compressed files. If your backup program supports include and exclude filters they can be used to either automatically select or deselect the compressed files respectively. QUESTION 34 Which type of device would you typically use for file access storage? A. SAN B. NAS C. DAS D. HBA /Reference: QUESTION 35 What is the process called that Solid State Drives (SSDs) use to reclaim space taken by previously stored data? A. garbage collection B. coalescing C. write amplification D. IOPS resizing Correct Answer: A

17 /Reference: : In today s solid state drives, the NAND flash memory must be erased before it can store new data. In other words, data cannot be overwritten directly as it is in a hard disk drive. Instead, SSDs use a process called garbage collection (GC) to reclaim the space taken by previously stored data. This means that write demands are heavier on SSDs than HDDs when storing the same information. Reference: