You observe that the following packets are transmitted from different egress ports of an 8-port switch. You do not have access to the ingress ports. That is, you can only see what comes out of the switch, not what goes into it.| Packet | Port 0 | Port 1 | Port 2 | Port 3 | Port 4 | Port 5 | Port 6 | Port 7 ||--------|--------|--------|--------|--------|--------|--------|--------|--------|| 1 | xx,xx | 70,60 | 70,60 | 70,60 | 70,60 | 70,60 | 70,60 | 70,60 || 2 | 90,80 | 90,80 | 90,80 | xx,xx | xx,xx | 90,80 | 90,80 | 90,80 || 3 | 60,70 | xx,xx | xx,xx | xx,xx | xx,xx | xx,xx | xx,xx | xx,xx || 4 | xx,xx | xx,xx | xx,xx | xx,xx | xx,xx | xx,xx | 70,60 | xx,xx |- **70,60**: packet with DA=70 and SA=60- **xx,xx**: port is idle, i.e., no packet is transmitted out of that port.### Tasks:(a). Based on the above information, construct the forwarding table. That is, determine the binding between the MAC address and the port number.(b). If the next packet (packet 5) has DA=80 and SA=60, predict which egress port(s) will see this packet.Please answer and explain, thank you.

A) The binding between the MAC Adress and the port number- Fwd -: MAC PORT 60 0 70…

bu observe that the following packets are transmitted from different egress ports of an 8-port switc ou do not have access to the ingress ports. That is, you can only see what comes out of the switch, ot what goes into it. Packet 1 2 3 4 Port 0 XX,XX 90,80 60,70 XX,XX Port 1 70,60 90,80 XX,XX XX,XX Port 2 70,60 90,80 XX,XX XX,XX Egress Ports Port 3 70,60 90,80 XX,XX XX,XX Port 4 70,60 XX,XX XX,XX XX,XX 0,60 packet with DA=70 and SA=60 X,XX: port is idle, i.e., no packet is transmitted out of that port. Port 5 70,60 90,80 XX,XX XX,XX Port 6 70,60 90,80 XX,XX 70,60 Port 7 70,60 90,80 XX,XX XX,XX

bu observe that the following packets are transmitted from different egress ports of an 8-port switc ou do not have access to the ingress ports. That is, you can only see what comes out of the switch, ot what goes into it. Packet 1 2 3 4 Port 0 XX,XX 90,80 60,70 XX,XX Port 1 70,60 90,80 XX,XX XX,XX Port 2 70,60 90,80 XX,XX XX,XX Egress Ports Port 3 70,60 90,80 XX,XX XX,XX Port 4 70,60 XX,XX XX,XX XX,XX 0,60 packet with DA=70 and SA=60 X,XX: port is idle, i.e., no packet is transmitted out of that port. Port 5 70,60 90,80 XX,XX XX,XX Port 6 70,60 90,80 XX,XX 70,60 Port 7 70,60 90,80 XX,XX XX,XX

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

You observe that the following packets are transmitted from different egress ports of an 8-port switch. You do not have access to the ingress ports. That is, you can only see what comes out of the switch, not what goes into it.

| Packet | Port 0 | Port 1 | Port 2 | Port 3 | Port 4 | Port 5 | Port 6 | Port 7 |
|--------|--------|--------|--------|--------|--------|--------|--------|--------|
| 1 | xx,xx | 70,60 | 70,60 | 70,60 | 70,60 | 70,60 | 70,60 | 70,60 |
| 2 | 90,80 | 90,80 | 90,80 | xx,xx | xx,xx | 90,80 | 90,80 | 90,80 |
| 3 | 60,70 | xx,xx | xx,xx | xx,xx | xx,xx | xx,xx | xx,xx | xx,xx |
| 4 | xx,xx | xx,xx | xx,xx | xx,xx | xx,xx | xx,xx | 70,60 | xx,xx |

- **70,60**: packet with DA=70 and SA=60
- **xx,xx**: port is idle, i.e., no packet is transmitted out of that port.

### Tasks:

(a). Based on the above information, construct the forwarding table. That is, determine the binding between the MAC address and the port number.

(b). If the next packet (packet 5) has DA=80 and SA=60, predict which egress port(s) will see this packet.

Please answer and explain, thank you.

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