Question

Imagine an everyday scenario in which you are using the internet: downloading a file, uploading a photo, checking your email, etc. You may choose the data “type” and overall scenario according to your own preferences. Next, create a slideshow presentation of how that data moves through the seven layers of the Open Systems Interface (OSI), starting with the hardware in the Physical Layer and ending with the software of the Application Layer.

Be sure to mention specifically which of these services and protocols would be used in your scenario:

Data Link Layer: ARP, OSPF, L2TP, PPP
Network Layer: IP, ICMP, IGMP, IPsec
Transport Layer: TCP, TSL/SSL, UDP
Application Layer: DHCP, DNS, FTP, HTTP, SMTP, Telnet, IMAP.

This doesn't need to be a long answer or even cover all of those.

Answer 1

In the scenario of uploading a photo to a social media platform, the data travels through the OSI model's seven layers, including the Physical, Data Link, Network, Transport, Session, Presentation, and Application Layers, utilizing protocols like ARP, IP, TCP, and HTTP or FTP to ensure successful transmission.

Step-by-step explanation:

How Data Moves Through the OSI Layers

Consider the scenario of uploading a photo to a social media platform. Here is a simplified description of how the data moves through the OSI layers:

1. Physical Layer: Hardware devices convert the digital photo into electronic signals that can be transmitted over the network.
2. Data Link Layer: Protocols like ARP (Address Resolution Protocol) link between the network address and the hardware address.
3. Network Layer: The IP (Internet Protocol) defines the data packets and the addressing scheme to route them to the destination.
4. Transport Layer: TCP (Transmission Control Protocol) ensures reliable transmission, sequencing the photo data packets correctly.
5. Session Layer: Manages the session between the user's device and the server, establishing and maintaining the connection needed for the photo upload.
6. Presentation Layer: Data is transformed for the Application Layer, ensuring it is in the correct format (e.g., JPEG for the image).
7. Application Layer: Protocols like HTTP (Hypertext Transfer Protocol) or FTP (File Transfer Protocol) are used to actually upload the photo to the social media platform.

This journey demonstrates the importance of each layer in facilitating the smooth transfer of data over the internet.

Answer 2

A photo upload to social media involves converting the data through the OSI model layers, starting from the Physical Layer to the Application Layer, using protocols such as ARP, IP, TCP, and HTTP, while services like DNS and DHCP may also play a role in the process.

Step-by-step explanation:

In an everyday scenario, let's say you're uploading a photo to a social media platform. Here's a simplified walkthrough of how data moves through the seven layers of the Open Systems Interface (OSI) model:

1. Physical Layer: Your device's hardware (e.g., network card) converts digital data into electrical, radio, or optical signals.
2. Data Link Layer: Protocols like ARP (Address Resolution Protocol) helps to identify the MAC address of the destination within the local network segment.
3. Network Layer: Your photo's data is packaged into packets with IP (Internet Protocol) addresses for the source and the destination.
4. Transport Layer: TCP (Transmission Control Protocol) ensures that packets are sent, received, and rearranged in the correct order if necessary.
5. Session Layer: Sets up a connection and maintains it until the transfer is complete.
6. Presentation Layer: Transforms the photo into a standardized format for transmission and encrypts data if necessary.
7. Application Layer: Protocols like HTTP (Hypertext Transfer Protocol) are used to interface with the web and send the photo to the social media platform.

Throughout this process, additional application layer services such as DNS (Domain Name System) are used to translate the social media website's name into an IP address, and DHCP (Dynamic Host Configuration Protocol) might be used to assign an IP address to your device if you are on a dynamic network.