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Q. Function of OSI Transport Layer?
- It takes the information to be sent as well as breaks it into individual packets that are sent and reassembled into a complete message by the Transport Layer at the receiving node
- As well provide a signalling service for the remote node so that the sending node is notified when its data is received successfully by the receiving node
- Transport Layer protocols comprise the capability to acknowledge the receipt of a packet if no acknowledgement is received the Transport Layer protocol can retransmit the packet or time-out the connection and signal an error
- Transport protocols can as well mark packets with sequencing information so that the destination system can properly order the packets if they're received out-of-sequence
- Additionally Transport protocols provide facilities for insuring the integrity of packets.
- Transport protocols offer the capability for multiple application processes to access the network by using individual local addresses to determine the destination process for each data stream
Problem 1 (a) What is the difference between an MPI blocking send function and an MPI non-blocking send function? (b) What is a communicator in MPI? (c) Name correctly
How many address bits are required to represent a 32 K memory ? Ans. 32K = 25 x 210 = 215, Hence 15 address bits are needed; Only 16 bits can address this.
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The Utilization Count shows the status of each processor in a specific mode i.e. Overhead mode, busy mode, and idle mode with respect to the progress in time as shown in Figure.
Define DMA controller. The I/O device interface control circuit that is used for direct memory access is called as DMA controller.
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