CDCP Storage Data Center 3

Question 1

Which type of storage media offers the lowest latency for random read/write operations in a data center?

Accepted Answer

NVMe SSD

Answer

NVMe SSDs connect directly via PCIe, bypassing legacy storage controllers, and deliver microsecond-level latency far below any spinning disk.

Question 2

What is the role of a storage virtualization layer in a data center?

Accepted Answer

To abstract physical storage resources and present them as logical volumes to hosts

Answer

Storage virtualization abstracts underlying physical hardware, allowing administrators to manage logical volumes independent of specific physical devices.

Question 3

In a data center context, what does 'thin provisioning' allow storage administrators to do?

Accepted Answer

Allocate logical storage capacity that exceeds the currently available physical capacity

Answer

Thin provisioning presents more logical capacity to hosts than physically exists, consuming real space only as data is actually written.

Question 4

What is the primary advantage of using Fibre Channel (FC) over iSCSI for SAN connectivity?

Accepted Answer

FC provides lower latency and dedicated bandwidth not shared with LAN traffic

Answer

Fibre Channel uses a dedicated, lossless fabric that delivers consistent low-latency performance without competing with general network traffic.

Question 5

Which storage architecture allows multiple servers to access a shared file system simultaneously over a network?

Accepted Answer

NAS (Network Attached Storage)

Answer

NAS provides file-level access over standard networking protocols like NFS and SMB, enabling concurrent shared access by multiple clients.

CDCP - Certified Data Centre Professional Practice Test

CDCP - Certified Data Centre Professional Practice Test

CDCP Storage Data Center 3