| 1: | What are the two main performance areas in storage networks? |
| A1: | Answer: Bandwidth and latency |
| 2: | True or false: DAS storage is less reliable than network storage. |
| A2: | Answer: False. DAShas historically been extremely reliable. |
| 3: | Which of the following is not part of the software used in the I/O path: file system, volume manager, storage resource manager, multipathing drivers, or SCSI driver? |
| A3: | Answer: Storage resource manager |
| 4: | What are the two layers most HBAs need? |
| A4: | Answer: SCSIapplication layer driver and network driver |
| 5: | Name the host system hardware components in the I/O path. |
| A5: | Answer: System processors, system memory, memory bus, I/O bus, and host bus adapter |
| 6: | What is flow control used for? |
| A6: | Answer: It adjusts the data rate of data being transmitted by a network node. |
| 7: | Name the subsystem hardware elements found in the I/O path. |
| A7: | Answer: Network port, storage controller, cache memory, storage interconnect, storage device, and storage media |
| 8: | True or false: Storage controllers in subsystems are the same as host system HBAs. |
| A8: | Answer: False. They have different logic to handle different types of tasks. |
| 9: | True or false: File systems and operating systems do not have to be from the same vendor. |
| A9: | Answer: True. Installable file systems have worked very successfully for many years. |
| 10: | True or false: The volume manager usually writes I/Os directly to disk device drivers. |
| A10: | Answer: False. The operating system kernel does this. |