A Fibre Channel switch has eight ports and all ports must be operational from 6 AM to 6 PM, Monday through Friday. However, a failure of Port 4 occurs with the week as follows:Monday = 11 AM to 1 PMWednesday = 5 PM to 10 PMThursday = 7 AM to 10 AMSaturday = 11 AM to 1 PMWhat is the availability of Port 4 in that week?
Answer(s): A
The required service window is 6 AM6 PM, MondayFriday (60 h total). Port 4 was down 2 h (Mon 11 AM1 PM), 1 h (Wed 56 PM), and 3 h (Thu 710 AM) for 6 h of downtime within that window. Availability = (60 h 6 h) / 60 h = 0.90, or 90 %.
A customer uses FCIP to connect local and remote FC SANs. The remote SAN is continuously replicated to,and used to store daily backup data. Latency over the IP WAN increases to unacceptable levels during peak replication periods. No other data transfer services using the WAN experience the same latency problem.What is the likely cause of the data replication performance issue?
FCIP encapsulates Fibre Channel frames into IP packets for WAN transmission. During high-volume replication, large FC frames may exceed the IP MTU, causing IP packet segmentation and reassembly. This introduces latency and performance issues specific to FCIP traffic, unlike other WAN traffic that doesn't require such processing.
An IT team needs to connect a compute system port to a switch in their SAN.What is the port type?
Answer(s): C
An F_Port (Fabric Port) is a switch port that connects to an N_Port on a compute system (typically a host or server). This allows the end device to join the SAN fabric for communication with storage devices.
What method does FCIP use to transport Fibre Channel SAN data?
Answer(s): B
FCIP (Fibre Channel over IP) enables geographically dispersed Fibre Channel SANs to communicate by encapsulating FC frames into IP packets and tunneling them over IP networks, allowing SAN extension over long distances.
Which layer of the OSI reference model provides logical end-to-end connections, sequencing, and integrity?
Answer(s): D
The Transport layer (Layer 4) of the OSI model provides logical end-to-end connections, ensures data sequencing, and maintains integrity through error detection and correction mechanisms, enabling reliable communication between applications on different hosts.
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