CIS502 Discussion Reply

CIS502 discussion post responses.

Respond to the colleagues posts regarding:

There are two discussions here that need to be responded to thoroughly. Responses must be on APA format 150+words 1-2 legitimate verifiable sources per response. 

OSI Model: Understanding the Seven Layers of Computer Networks

Understanding the function and responsibilities of each layer of the OSI model will help you to understand how network communications function. To make the most of the OSI model, you must be able to remember the name of the seven layers in their proper order.

Let’s have some fun and think about mnemonics from the initial letters of the layer names so they are easier to remember. You may work from the physical layer to the application layer or the reverse.

For example: Physical – Data link – Network – Transport – Session – Presentation - Application

Please ----Do -----------Not ---------Throw -------Sausage--Pizza -----------Away.

Think of an original mnemonic for the OSI model and post with your discussion post.

Next, select one of the layers and: (1) discuss a function of the layer and (2) provide an example of a common networking component for the layer.

For example: Layer 2 is the data link layer and allows a device to access the network to send and receive messages. A common network component for this layer is a network interface card (NIC).

There are many functions and components to select from, so please do not replicate selections already chosen by your peers.

WK’s post states the following:Top of Form

People Do Nasty Things, So Pay Attention

The application layer is the last layer of the OSI model. This is where we nestle applications and software developed for end users. Popular applications include web browsers (Chrome), collaborative tools (SharePoint) and tools that help humans monitor and manage other components of the model (Wireshark).

Understanding the function and responsibilities of each layer of the OSI model will help you to understand how network communications function. To make the most of the OSI model, you must be able to remember the name of the seven layers in their proper order.

Let’s have some fun and think about mnemonics from the initial letters of the layer names so they are easier to remember. You may work from the physical layer to the application layer or the reverse.

For example: Physical – Data link – Network – Transport – Session – Presentation - Application

Please ----Do -----------Not ---------Throw -------Sausage--Pizza -----------Away.

Think of an original mnemonic for the OSI model and post with your discussion post.

Next, select one of the layers and: (1) discuss a function of the layer and (2) provide an example of a common networking component for the layer.

For example: Layer 2 is the data link layer and allows a device to access the network to send and receive messages. A common network component for this layer is a network interface card (NIC).

There are many functions and components to select from, so please do not replicate selections already chosen by your peers.

KA’s Post states the following

Please- Do- Not- Touch- So- Please- Ask

Session - OSI Layer 5- Opens, closes, and manages sessions, controls connections between multiple computers (ZIP, Apple Talk Protocol, Session Control Protocol, DEC Net Phase IV Session-layer Protocol).

It works by:

*Client sends Request

*Server finds correct Security Protocols

*Client Reviews and chooses Protocol

*Server Creates Random String of Characters and Password and Send to Client

*Client takes password challenge string uses own password

*Encryption String Sent back to Server

*Serve4r retrieves users password and uses to encrypt random character string

*Server compares results

*ACK is sent to Client

*Client Receives NACK

*Session is Set-up

Tetz, E, Cisco Networking: OSI Model Layer 5 Session, Reviewed Oct. 30, 2019