examen tercera parte Flashcards
Which of the following are not examples of unstructured data
- Sql databases
- No Sql databases
During data center construction a media company purchased storage devices from multiple vendor the CTO wants to centrally manage these devices though storage virtualization which of the following functions are provided by storage virtualization
- Hiding the complexity of physical devices
- Supporting unified deployment and management
- Reducing the limitations of physical storage capacity
Which of the following statements are NOT true about the extent in RAID 2.0 +
TECHNOLOGY
- an extent can be 128mb but a grain is always 64 kb
- An extent can be as small as 512kb and as large as 128mb
- An extent can be as small 64 Mb and as large as 512 mb
Which of the following statements are true
- CIFS is a network based sharing protocol it has high demands on network transmission reability so it usually uses TCP / IP
- NFS is a stateless protocol while CIFS A stateful protocol NFS can be automatically recovered from a fault while CFIS cannot
Which statements are NOT TRUE about flash chips
- In the TCL ONE cell can store four bits of data
- In the QLC one cell can store three bits of data
When maintaining a Huawei all flash storage system the engineer finds an expansion module alarm on the alarms and events pages of devices manager after analysis they determine that the expansion module needs to be replaced what should the engineer do
- Replace the expansion module during off peak hours
- After the replacement, label the replaced expansion module
- Use the Huawei storage networking assistant to confirm the cable connection of The expansion module to be replaced
Which of the following items are mandatory in a fibre channel SAN
- STORAGE DEVICE
- FEBRE CHANEL HBA
A bank enables smartier for the transaction system during i/o monitoring it is found that the write data is frequently accessed which configurations helps optimize performance
- Capacity allocation preferentially from the capacity tier
- Migration to the low performance tier
Which of the following statements about LAN based backup are true
- The backup agent affects the performance of application servers
- Backup data is based on LANs affecting networking performance
- Backup jobs must be separately maintained complicating management and maintenance
Which statements about smartier dynamic storage tiering technology are true
- The smartTier calculates and analyzes the activity level of data
- The smarttier automatically and dynamically matches data from different activity levels with storage media of different
- The smartier data relocation activities are based on configurated policies
In storage system of an internet company A and B compete for cache and network resources prolonging the wait time fot other services to solve this problem cache
Partitioning and traffic control need to be configured service A is used for processing transactions and requires instant responsive Service B is used for analyzing and queryng data
Which following configurations are not correct
- When configurating cache partitions ensure that the cache of service B is larger than that of service A
- Set the QoS priority of service B to be higher than that of service A
Which of the following statements are NOT true about the structure and functions of the hard disk components
- The spindle is responsible for sending commands to the disk head
- The disk connector is responsible of connection and rotation of the platter
Which of these are NOT O&M standard systems
- Institute of electrical and electronics engineer (IEEE)
- Storage networking Industry association (SNIA)
An enterprise establish active data centers in A city B if the active-active arbitration mode of the storage (such as Huawei oceanstor hyrird) flash storage is static priority mode, site A is the static priority site which of the following statements are NOT TRUE
- If the link between two storage systems is down, both site A and B continue providing services
- If site a is fealty site B automatically take over services
Which statements are NOT true about PCIe scale-out and IP scale-out
- PCIe scale-out supports the Ethernet protocol
- PCIe scale-out support the interner wide-area RDMA protocol (iWARP) technology
Huawei oceanstor all flash storage is used as an example which statement are NOT true about indicators
- The power button must be separate from the power indicator
- For the controller enclosure if the location indicator is steady blue the enclosure is being located
The official website of an enterprise cannot be accessed maintenance personnel find that two NL SAS HDDS in the disk array are in the alarm state at the same time causing data loss to avoid such problems which configurations can be used be the enterprise on the premise that the disk capacity utilization cannot be higher than 70%?
- RAID 6 group in 2D+ 2P mode
- RAID 6 group in 4D + 2P mode
Which the following statenents are true about the CIFS protocol
- The CIFS protocol allows a user to read write and create files stored in a storage system like on a local computer
- CIFS is also called server message block (SMB) special attention should be paid to its version SMB 1.0 SMB 2.0 SMB 3.0
- NTLM and Kerberos autenticatinos are supported
An engineer maps the storage system to the file server to store various enterprise files. One day the file system is attacked by viruses and files cannot be opened to access files the engineer performs a snapshot rollback which of the following statenment true
- A snapshot rollback can quickly restore data
- Some data may be lost during a snapshot rollback
- When no host reads or write data the snapshot data is rolled back to the source volume in sequence
Which of the following disk following disk interface technologies does NOT use serial interface technology
- ATA
- SCSI
An new thinlun of 100 GB is create the option initially allocated capacity was set to 50 gb
Which of the following statements are NOT TRUE about this LUN
- No more than 50 gb can ever be write to this volume
- The LUN like all ThinLuns does not occupy any apace at creation time
- The lun must be fully formatted first and then consumes 100 gb of storage capacity
Which of the following RAID types has fault tolerance of no more than 1 drive failure
- RAID 0
- RAID 3
- RAID 5
Which following statements about SCSI are true
- SCSI stands for “small computer systeminterface” IT is a protocol system
- The evolution is SCSI-1 > SCSI-2 > SCSI-3
- SCSI support
communications between different devices
On the IP SAN of an enterprise the host resources usage is always high it is found that the initiator software on the occupies a large number of resources to convert Iscsi packets into TCP/IP packets what are the solutions that can NOT SOLVE the preceding problem
- Change the 10ge network to a 25 GE network
- Expand the capacity of the storage device
Which of the following are a reasonable applications scenarios for QoS
- To ensure the performance for core applications when resources are insufficient
- To ensure the performance for high priority subscribers
- To increase the network traffic and avoid the congestion caused by the overconsumption
File system protocols can be either stateless or stateful which of the following statements are Not true regarding the properties of NFS and CIFS
- NFS is a stateful protocol
- CIFS is a stateless protocol
- NFIS has higher transmission efficiency than CIFS due to more state information sent during connection
A bank purchases a new storage devices during the raid level configuration the bank requires that data reliability be improved and parity data be stored on different disk which RAID level can NOT meet the requirements
- RAID 3
- RAID 0
File system protocols can be either stateless or stateful which of the following statements are NOT true regarding the properties of NFS and CIFS
- NFS is a stateful protocol
- CIFS is a stateless protocol
- NFS has higher transmission efficiency than CIFs due to more state information sent during connection
Which of the following statements are true about CIFS protocol
- The cifs protocol allows a user to read write and create files stored in a storage system like on a local computer
- CIFS is also called Server Message Block (SMB ) special attention should be paid to its version smb 1,0 smb2.0 and smb 3.0
- NTLM and Kerberos authentications are supported
Which of the following statements about reconstruction are correct
- Reconstruction requires hot spare disk
- Reconstruction affects system performance
- Reconstruction does not interrupt system services
Which of the following statements about LAN BASSED backup are true
- The backup agent affect the performance of application servers
- Backup data is based on LANs effecting network performance
- Backup jobs must be separately maintained complicating management and maintenance
Which of the following are limitations of Das compared with san
- Poor scalabilty
- Difficult resource sharing
- Decentralized management
A company purchases a Huawei storage device (such as Huawei oceanstor hybrid storage) that uses sas disk in addition to sas disk which types of disk are Not supported by the storage device
- SCSI disk
- Fibre channel disl
Which of the following statements about RAID 5 are NOT correct
- RAID 5 has fixed parity disk
- RAID 5 tolerates the failure of maximum of two member disk without losing data
Which of theses are Not O & M standard systems
- Institute of electrical and Electronics Engineer (IEEE)
- Storage Networking Industry Association
Which of the following are correct regarding the differences of IP SAN and FC SAN
- Ip scan uses Iscsi protocol for data transmission
- FC SAN uses FC protocol data transmission
- Both encapsulates the SCSI command whit their underlying protocol before transmission
Which of the following are the characteristics of the active active mode of a storage controller
- Two controllers process the i/o request from applications servers concurrently
- If a controller becomes faulty the other takes over the work of the faulty controller without disrupting ongoing services
- The active active mode achieves load balancing full utilization of resources and system performance improvement
Huawei osean stor all-flash storage is used as an example which statements are NOT true about indicators
- The power button must be separated from the power indicator
- For the controller enclosure if the alarm indicator is steady blue the enclosure is beinglocated
In the scenario where only 2 disk are in the RAID group which of the following does NOT use data strioing
- Raid 1
- RAID 5
- RAID 6
WHICH statement are not true about the disk usage of a storage system
- SAS disk belong to the high performance tier and are used to store frequently accessed data
- Nl- SAS disk belong to the capacity tier and are used to store data that is accessed at medium frecuency
Which stament about Smart tier dynamic storage tiering technology are true
- The smart tier calculates and analyzes the activity level of data
- The stamarttier automatically and dynamically matches data from different activity levels with storage media different characteristics
- The smarttier data recollection activities are based on configured policies
Which of the following statements are NOT true about the NVME protocol
- The NVMe protocol support HDDs
- Devices that support the NVMe protocol can be used without installing a driver
- The NVMe protocol can be to transmit the SCSI protocol
Which of the following statements are NOT true about the structure and function of the hard disk components
- The actuador is responsible of sending commands to disk head
- The disk connector is responsible ofconnection and rotation of the platter
During data center construction a media company purchased storage devises from multiple vendors the CTO wants to centrally manage these devices through storage
Virtualization which of the following function are provided by storage virtualization
- Hiding the complexity of physical devices
- Supporting unifed deployment and management
- Reducing the limitations of physical storage capacity
Which of the following are a reasonable application scenarios for QoS
- To ensure the performance for core applications when resources are insufficient
- to ensure the performance for high priority suscribers
- to increase the network traffic and avoid the congestion caused by the overconsumption
which of the following statemts are NOT true evlolution of the storage network architecture
- data needed to be stored as the data volume increased therefore the aerliest and simplest storage architectuire SAN emerged
- SAN provided with file storage to make file sharing in the DAS architecture more convenient
- Distributed storage emerged in the same time period as das providing for DAS architecture
An Enterprise establishes active active data centers in city A and city B if active active arbitration mode of the storage (such as HUAWEI ocean stor hybrid flash storage) is static priority mode site A is the static priority site which of fallowing statements are NOT TRUE
- If the link between two storage system is down both site A and B continue providing services
- If site A id faulty site B automatically takes over services
Which statement are not true about the synchronization process of hyperclone
- During initial synchronization a snapshot is automatically created for the source LUN Therefore a snapshot license is required
- Reverse incremental synchronization is not supported
The data processing procedure includes data input which operation are not performend in the data processing phase
- IMPORTING calculation data to the database
- Printing pay slips
Which of the following statement are true
- CIFS is a network based sharing protocol it has high demands on network reliability so it usually uses TCP/IP
- NFC Is stateless protocol while CIFS is a stateful protocol NFS ca be automstically recovered from a fault while CIFs cannot
A new thinLUN of 100 gb is created the option initially allocated capacity was set to 50 gb which of the following statement are not true about this LUN
- No more than50gb can ever be written to this volume
- The lun like all thinluns does not accupy any space at creation time
- The lun must be fully formatted first and then consumes 100gb of storage capacity
Huawei oceanstor all flash storage is used as an example which statements are not true about indicators
- The power button must be separated from the power indicator
- For the controller enclosure if the location indicator is steady blue the enclosure is being located
Which following RAID types has fault tolerance of no more than 1 drive failure
- RAID 0
- RAID 3
- RAID 5
WHICH OF the following statement about RAID 5 are NOT correct
- RAID 5 tolerantes the failure of maximum of two number disks without losing data
Which of the following statement about LAN based backup are true
- The backup agent affects the performance of application servers
- Backup data is based on LANs affecting network performance
- Backup jobs must be separately maintained complicating management and maintence
Which of the following statement about reconstruction are correct
- Reconstruction requires hot spare disk
- Reconstruction affects system performance
- Reconstruction does not interrupt system services
In the scenario where only 3 disk are in the Raid group which one of the following does NOT use data striping
- Raid 1
- RAID 5
- RAID 6
Which of the following are limitations of DAS compared with SAN
- POOR scalability
- Difficult resource sharing
- Decentralizec management
The official website of an entreprise cannot accessed maintenance personnel find that NL SAS HDDs in the disk array are in the alarm state at the time causing data loss to avoid such problem which configurations can be used by the enterprise on the premise that the disk capacity utilization cannot be higher than 70%
- RAID 6 group in 2D+2Pmode
- RAID 6 group 4D + 2P mode
Which of the following statement about SCSI are true
- SCSI stands for Small computer system interface it is a protocol system
- The evolution is SCSI -1 >SCSI-2 > SCSI-3
- SCSI supports communication between different devices
Which of the following are limitations of DAS, compared with SAN?
- POOR scalability
- Difficult resources sharing
- Decentralized management
Which of the following are not example of unstructured data
- SQL database
- NoSQL Database
Which statement are true about unstructured data
- Text and imagen are unstructured data
- Images audio and video are unstructured data
There is an issue that storage system some hosts comsume too many resources which of the following configuration procedures and measurement indicators are NOT
Correct?
- Enable the QoS to Limit the number of connections to hosts
- Enable QoS to limit the number of files that can be transferred on each session
A new thinLuN of 100 GB id created the option initially Allocated capacity was set to 50 gb which of the following statement are not true about this lun
- No more than 50 gb can ever be written to this volume
- The lun like all thinluns does not occupy any space at creation time
- The LUN must be fully formatted first and then consumes 100GB of storage capacity
Which of the following disk interference technologies does NOT use serial interface technology
- ATA
- SCSI
Which of the following statement are true about Huawei oceanstor all flash storage system
- OSEAN STOR all flash storage system support frot end interconnect i/o module to straightly sent host i/o to the most appropriate controller
- The caches on all controller nodes form a global cache
- Data in each LUN is evenly distributed across the caches on all nodes
When CLI is used to configurate Huawei hybrid flash storage which of following operations are involved in creating storage space
- Create storage pool
- Create a LUN
- Create a LUN group
Which of the following statement about SCSI are true
- SCSI stands for small computer system interface it id a protocol
- The evolution is SCSI -1 > SCSI -2 > SCSI -3
- SCSI support communication between different devices
Which of the following statement are not true about RAID 2.0+
- Chunks belonging to one file will never be written on the same physical disk
- RAID 2.0+ has a higher RAID overhead than traditional RAID types
- RAID 2.0+ allows for a complete enclosure to fail without causing data loss
Which statement are not true about cables in a storage system
- SERIAL cables are used to connect expansion port and connect controller enclosures to disk enclosures
- Mini SAS HD cables are used to connect PCI e ports on controllers in a controller enclosure to data switches
Which of the following components are NOT responsible for rotating the disk platter in the disk drive
- Actuador
- Control circuit board
- Read write arm
What of the following are NOT the function of hot spare in storage ?
- Additional space for usage when storage resource is low
- Used as cache to increase the performance of disk
- Spare disk space used for disk data reconstruction when disk are faulty
Which of the following are components of a backup system
- Backup software
- Backup media
- Backup server
Which RAID levels do not use the parity check technology
- RAID 1
- RAID 0
When host reads data from a thin LUN WHICH OF THE following technology are not used to read data from the actual storage space of a storage pool
- Capacity-on-write
- Direct-on-read
- Capacity-on-read
Which of the following statements are correct
- RAID group is like a physical volume that consist volume
- One logical volume can be created on a physical volume
- Multiple logical volumes can be create on a physical volume
Which of the following statements are Not true about Smarthin LUNs
- Space will be reclaimed in all windows operating system when is deleted in the os
- A thin LUN cannot be converted into a Thick LUN
- SmartThin must be enabled on all LUN of a storage pool
Based on the analysis of disk characteristics and data characteristics regarding storage tier which of the following statement are not correct
- SAS drives belong in the high performance tier and storage the data with high access frequency
- NL-SAS drives belon in the capacity tier storage the data with the medium access frequency
