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Consider the switch shown below. Suppose that all datagrams have the same fixed length, tha the switch operates in a slotted, synchronous manner, and that in one time slot a datagram ca be transferred from an input port to an output port. The switch fabric is a crossbar so that at m one datagram can be transferred to a given output port in a time slot, but different output ports can receive datagrams from different input ports in a single time slot. What is the minimal num of time slots needed to transfer the packets shown from input ports to their output ports, assuming any input queue scheduling order you want (i.e., it need not have HOL blocking)? V is the largest number of slots needed, assuming the worst-case scheduling order you can dew assuming that a non-empty input queue is never idle? Output port X → Switch fabric Output port Y Output port Z

Consider the switch shown below. Suppose that all datagrams have the same fixed length, tha the switch operates in a slotted, synchronous manner, and that in one time slot a datagram ca be transferred from an input port to an output port. The switch fabric is a crossbar so that at m one datagram can be transferred to a given output port in a time slot, but different output ports can receive datagrams from different input ports in a single time slot. What is the minimal num of time slots needed to transfer the packets shown from input ports to their output ports, assuming any input queue scheduling order you want (i.e., it need not have HOL blocking)? V is the largest number of slots needed, assuming the worst-case scheduling order you can dew assuming that a non-empty input queue is never idle? Output port X → Switch fabric Output port Y Output port Z

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider the switch shown below. Suppose that all datagrams have the same fixed length, that the switch operates in a slotted, synchronous manner, and that in one time slot a datagram can be transferred from an input port to an output port. The switch fabric is a crossbar so that at most one datagram can be transferred to a given output port in a time slot, but different output ports can receive datagrams from different input ports in a single time slot. What is the minimal number of time slots needed to transfer the packets shown from input ports to their output ports, assuming any input queue scheduling order you want (i.e., it need not have HOL blocking)? What is the largest number of slots needed, assuming the worst-case scheduling order you can devise, assuming that a non-empty input queue is never idle? Output port X → Switch fabric Output port Y Output port Z →
Transcribed Image Text:Consider the switch shown below. Suppose that all datagrams have the same fixed length, that the switch operates in a slotted, synchronous manner, and that in one time slot a datagram can be transferred from an input port to an output port. The switch fabric is a crossbar so that at most one datagram can be transferred to a given output port in a time slot, but different output ports can receive datagrams from different input ports in a single time slot. What is the minimal number of time slots needed to transfer the packets shown from input ports to their output ports, assuming any input queue scheduling order you want (i.e., it need not have HOL blocking)? What is the largest number of slots needed, assuming the worst-case scheduling order you can devise, assuming that a non-empty input queue is never idle? Output port X → Switch fabric Output port Y Output port Z →
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