| 1 | List the functions provided by bit-level encoding schemes. |
| Answer: | Clocking, DC balance, bit error detection and byte/word alignment. |
| 2 | What must be subtracted from the data bit rate to determine the ULP throughput rate? |
| Answer: | Inter-frame spacing and framing overhead. |
| 3 | List the six physical topologies. |
| Answer: | Star, linear, circular, tree, partial mesh and full mesh. |
| 4 | How can a protocol that is not designed to operate in a circular physical topology overcome this limitation? |
| Answer: | By implementing special procedures or protocols that create a non-circular logical topology. |
| 5 | Describe one situation in which service and device discovery is not required. |
| Answer: | Either of the following is correct: when a human learns of the service/device name or address via some non-computerized method or when a device has been manually configured. |
| 6 | What additional steps might be required after service/device discovery? |
| Answer: | Name and/or address resolution depending on the contents of the discovery reply. |
| 7 | How many ULPs was the SPI designed to support? List them. |
| Answer: | One; SCSI. |
| 8 | During which SPI bus phases is the data bus used? |
| Answer: | COMMAND, DATA, STATUS and MESSAGE. |
| 9 | Why does the SPI device discovery mechanism not scale? |
| Answer: | Each address in the address space must be probed. |
| 10 | What SCSI command enables the discovery of LUNs? |
| Answer: | REPORT LUNS. |
| 11 | Ethernet originally competed against what network technologies? |
| Answer: | Primarily ARCNET and Token Ring. |
| 12 | What assumption enables Ethernet to remain a low-overhead protocol? |
| |
| Answer: | That ULPs will provide the required functionality that is missing from Ethernet. |
| 13 | What logical topology is supported by Ethernet? |
| Answer: | Tree. |
| 14 | List three characteristics that contributed to the early success of TCP/IP. |
| Answer: | Emphasis on human community, abstraction through layered protocols and open dialogue about future developments. |
| 15 | What is the ULP throughput rate of iSCSI on GE? |
| Answer: | 918.075 Mbps. |
| 16 | What iSCSI command enables the discovery of target nodes? |
| Answer: | SendTargets. |
| 17 | What two protocols are available for automated discovery of iSCSI target devices and nodes? |
| Answer: | SLP and iSNS. |
| 18 | Did FC evolve into a multi-protocol transport, or was it designed as such from the beginning? |
| Answer: | FC was designed to be multi-protocol from the beginning. |
| 19 | What is the ULP throughput rate of FCP on one Gbps FC? |
| Answer: | 826.519 Mbps. |
| 20 | FC protocol operations are defined for what topologies? |
| Answer: | PTP, loop and switch based (fabric). |
| 21 | FC device discovery can be bounded by what mechanism? |
| Answer: | Zoning. |
