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Exam (elaborations)

Cloud computing newest exam 3 with verified answers

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Cloud computing newest exam 3 with verified answers

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Cloud computing newest
exam 3 with verified
answers

RAID 1 configuration...
|||||| ||||||




a. mirrors data across 2 drives
|||||| |||||| |||||| |||||| ||||||




b. stripes data and provides no parity
|||||| |||||| |||||| |||||| |||||| ||||||




c. stripes data and parity across multiple drives
|||||| |||||| |||||| |||||| |||||| |||||| ||||||




d. stripes data across multiple drives with a drive for parity - correct answer ✔a. mirrors
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




data across 2 drives
|||||| |||||| ||||||




Which of the following is true about local file systems?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




a. They provide abstract file view to users and applications.
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




b. They organize where data is placed on storage devices.
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




c. They store and retrieve blocks of data to/from storage devices.
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




d. All the above are true. - correct answer ✔d. All of the above are true.
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What technology transfers file-level data over the network?
|||||| |||||| |||||| |||||| |||||| |||||| ||||||




a. RAID
||||||




b. NAS
||||||

,c. iSCSI
||||||




d. SAN - correct answer ✔b. NAS
|||||| |||||| |||||| |||||| |||||| ||||||




Spreading Data from one source (one block) across multiple disks is:
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




a. Redundancy
||||||




b. Striping
||||||




c. Mirroring
||||||




d. Switching - correct answer ✔b. Striping
|||||| |||||| |||||| |||||| |||||| ||||||




iSCSI is used for _________
|||||| |||||| |||||| ||||||




a. RAID
||||||




b. DAS
||||||




c. NAS
||||||




d. SAN - correct answer ✔d. SAN
|||||| |||||| |||||| |||||| |||||| ||||||




Software RAID processing is handled by... |||||| |||||| |||||| |||||| |||||| ||||||




a. Disk controller
|||||| ||||||




b. Disc drives
|||||| ||||||




c. SCSI
||||||




d. Computer operating system - correct answer ✔d. Computer operating system
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Which RAID level provides fault-tolerance and improved performance?
|||||| |||||| |||||| |||||| |||||| |||||| ||||||




a. RAID 0
|||||| ||||||

, b. RAID 1
|||||| ||||||




c. RAID 5
|||||| ||||||




d. All the above - correct answer ✔c. RAID 5
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




What's the feature of RAID that allows users to continue access data on an array even if
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




one of the disks fails?
|||||| |||||| |||||| ||||||




a. faster reads/writes
|||||| ||||||




b. fault tolerance
|||||| ||||||




c. striping
||||||




d. performance improvement - correct answer ✔b. fault tolerance
|||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Which of the following is NOT true about network file systems?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




a. They are application layer services
|||||| |||||| |||||| |||||| ||||||




b. They allow transparent access to files for network users
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




c. They use file-level access
|||||| |||||| |||||| ||||||




d. They use block-level access - correct answer ✔d. They use block-level access
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Which of the following is NOT true about a server using DAS?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




a. The server offers high speed block-level access to network clients.
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




b. The server can use file-level protocol (e.g. NFS, CIFS) for "sharing" data with clients.
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




c. The server communicates with the storage device using a block interface.
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




d. The server can make the data on the storage device available to the clients on the
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




network. - correct answer ✔a. The server offers high speed block-level access to network
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




clients.

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