KNOWLEDGE CHECKS PACKET SCHEDULING (SCENARIO 2, PRIORITY). Consider the pattern of red and green packet arrivals to a router's output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 7, 8) under priority scheduling, where red packets have higher priority. Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1). [Note: You can find more examples of problems similar to this here.] arrivals packet in service departures t 123 0 1 4 5 2 3 4 ? 5 67 6 ? 7 ? 8

KNOWLEDGE CHECKS PACKET SCHEDULING (SCENARIO 2, PRIORITY). Consider the pattern of red and green packet arrivals to a router's output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 7, 8) under priority scheduling, where red packets have higher priority. Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1). [Note: You can find more examples of problems similar to this here.] arrivals packet in service departures t 123 0 1 4 5 2 3 4 ? 5 67 6 ? 7 ? 8

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

ed ers Packet scheduling (Scenario 1, Priority). Consider the pattern of red and green packet arrivals to a router's output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 7, 8) under priority scheduling, where red packets have higher priority. Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1). arrivals packet in service departures 1234576 1235476 t 1 2 3 4 5 Į ?? 0 1 ? ? ? 67 ?? 2 3 4 5 6 7 8 Not quite. One of more of your packets are in the incorrect order.
ed ers Packet scheduling (Scenario 1, RR). Consider the pattern of red and green packet arrivals to a router's output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 7, 8) under round robin scheduling, where red starts a round if there are both red and green packets ready to transmit after an empty slot. Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1). arrivals packet in service departures 1325476 1324576 t 1 2 3 4 5 Į ? ?? 0 1 2 ? ? 3 4 5 67 9 ? ? 7 8 Not quite. One of more of your packets are in the incorrect order.
Consider the same pattern of red and green packet arrivals to a router’s output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 6, 7) under round robin scheduling. Assume a round-robin scheduling cycle beings with green packets. Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1).
hdet b) Consider sending a packet contains 1100 bits from Host A to Host B in a store and forward nerwork. There are 10 links (and 9 routers) between A and B, and the links are congested (there Is a queuing delays). Assume propagation delay over the links are negligible. As a packet travels along the route, it encounters an average of 5 packets already waiting in the queue to be transmitted when it arrives at each router, How long does it take for the packet to get to the receiver if the nodes transmit on a "first come first served" basis (in ms)?
4.01-1. Packet scheduling (a). Consider the pattern of red and green packet arrivals to a router's output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 6, 7) under FCFS scheduling. Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1). [Note: You can find more examples of problems similar to this here B.) arrivals packet in service departures 234 0 ??? ? ? ? ? ? 2 67 -w 4 5
Consider the pattern of red and green packet arrivals to a router’s output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 6, 7) under Priority scheduling, where red packets have priority over green packets.. Match each time unit (t=1, t=2, t=3 ....) with the number of the packet that was transmitted and thus "departs" at that time unit.
Packet scheduling. Consider the pattern of red and green packet arrivals to a router's output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 6, 7) under FCFS scheduling. Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1). arrivals packet in service departures 234 5 2 ???? ? 67 3 4 5 6 t
Packet scheduling. Consider the same pattern of red and green packet arrivals to a router's output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 6, 7) under round robin scheduling. Assume a round-robin scheduling cycle begins with green packets. Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1). [Note: You can find more examples of problems similar to this here.] arrivals packet in service departures 1 234 0 5 2 67 ??????? 3 4 5 6
22. A datagram subnet allows routers to drop packets whenever they need to. The probability of a router discarding a packet is p. Consider the case of a source host connected to the source router, which is connected to the destination router, and then to the destination host. If either of the routers discards a packet, the source host eventually times out and tries again. If both host-router and router-router lines are counted as hops, what is the mean number of a. (a) hops a packet makes per transmission? b. (b) transmissions a packet makes? (c) hops required per received packet?
R6Fragmentation of an IP datagram takes place if its size is larger than the MTU of the subnet over which the datagram will be routed. Most IP datagram reassembly algorithms have a timer to avoid having a lost fragment tie up reassembly buffers forever. Suppose a datagram is fragmented into four fragments. The first three fragments arrive, but the last one is delayed. Eventually the timer goes off and the three fragments in the receiver's memory are discarded. A little later, the last fragment stumbles in. What should be done with it?
Deficit round-robin is a scheduling scheme that operates as follows. The scheduler visits the queues inround-robin fashion. A deficit counter is maintained for each queue. When the scheduler visits a queue,the scheduler adds a quantum of service to the deficit counter, and compares the resulting value to thelength of the packet at the head of the line. If the counter is larger, the packet is served and the counter isreduced by the packet length. If not, the deficit is saved for the next visit. Suppose that a system has fourqueues and that these contain packets of length 16, 10, 12 and 8 and that the quantum is 4 units. Show thedeficit counter at each queue as a function of time and indicate when the packets are transmitted.
4.2-2. Packet scheduling (FCFS). Consider the pattern of red and green packet arrivals to a router's output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission (at the earliest) at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 6, 7) under FCFS scheduling. Match each time unit (t=1, t=2, t=3....) with the number of the packet that was transmitted and thus "departs" at that time unit. arrivals packet in service departures 1 23 | ||| ??????? - Im At t=1, the number of the packet that finishes transmission is: 56 At t=6, the number of the packet that finishes transmission is: Is [Choose ] [Choose ] At t=2, the number of the packet that No packet leaves at this time. finishes transmission is: packet 2 At t-3, the number of the packet that packet 6 finishes transmission is: packet 5 At t=4, the number of the…