4.2-2b Packet scheduling (PRI). Consider again the same pattern of red and green packet arrivals to a router's output port queue, as shown above (in question 4.2-2a). 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. At t=1, the number of the packet that finishes transmission is: [Choose] [Choose ] packet 6 packet 5 At t-3, the number of the packet that No packet departs at this time unit. finishes transmission is: packet 2 At t=4, the number of the packet that packet 4 finishes transmission is: packet 1 At t=2, the number of the packet that finishes transmission is: At t=5, the number of the packet that finishes transmission is: At t=6, the number of the packet that finishes transmission is: At t-7, the number of the packet that finishes transmission is: packet 3 [Chovat [Choose ] [Choose ]

4.2-2b Packet scheduling (PRI). Consider again the same pattern of red and green packet arrivals to a router's output port queue, as shown above (in question 4.2-2a). 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. At t=1, the number of the packet that finishes transmission is: [Choose] [Choose ] packet 6 packet 5 At t-3, the number of the packet that No packet departs at this time unit. finishes transmission is: packet 2 At t=4, the number of the packet that packet 4 finishes transmission is: packet 1 At t=2, the number of the packet that finishes transmission is: At t=5, the number of the packet that finishes transmission is: At t=6, the number of the packet that finishes transmission is: At t-7, the number of the packet that finishes transmission is: packet 3 [Chovat [Choose ] [Choose ]

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

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Concept explainers

Types Of Protocols

A network protocol is a collection of rules that governs the exchange of data between devices connected to the same network. In other words, network protocols are rules that specify how devices communicate or transfer data over a network. The sender and receiver systems must obey the standards to facilitate communication between them.

Question

**4.2-2b Packet Scheduling (PRI)**

Consider again the same pattern of red and green packet arrivals to a router’s output port queue, as shown above in question 4.2-2a. 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, etc.) with the number of the packet that was transmitted and thus "departs" at that time unit.

- **At t=1**, the number of the packet that finishes transmission is: [ Choose ]

- **At t=2**, the number of the packet that finishes transmission is: [ Choose ]

- **At t=3**, the number of the packet that finishes transmission is: [ Choose ]

- **At t=4**, the number of the packet that finishes transmission is: [ Choose ]

- **At t=5**, the number of the packet that finishes transmission is: [ Choose ]

- **At t=6**, the number of the packet that finishes transmission is: [ Choose ]

- **At t=7**, the number of the packet that finishes transmission is: [ Choose ]

### Packet Choices:

- Packet 6
- Packet 5
- No package departs at this time unit.
- Packet 2
- Packet 4
- Packet 1
- Packet 3

This exercise requires you to match each time unit to the packet that departs, considering a priority scheduling algorithm that gives precedence to red packets over green packets.

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