[IT273: Networking Concepts]

Unit 2 - Assignment

Project Instructions:

Respond to each of the project requirements and submit all work to the Dropbox as a single file. Project requirements:

1. Complete the review questions:

   a. The seventh layer of the OSI model is the _Application___ layer.

   b. Protocols _NetBios and NFS__ accept data from the Session layer and manage end-to-end delivery of data.

   c. True or False: The IP (Internet Protocol) operates in the Transport layer.

   d. True or False: Standards help to ensure interoperability between software and hardware from different manufacturers.

   e. True or False: Standards define maximum acceptable performance.

2. Create a table showing each layer of the OSI model in the first column and providing a one-paragraph description of that layer in the second column.

3. Add to your table a column showing which pieces of hardware most commonly manage each layer.

4. Add to your table a column showing the protocols employed at each level.

5. Add a column to your table showing how data is built from layer to layer.

+————+—————+————+————+————–+ | Layer | Description | Protocols | Hardware | Data | | | | | | building | +============+===============+============+============+==============+ | Physical | Responsible | Ethernet | Hubs, | Data is | | | for | | Nics, | transferred | | | transmission | | | to physical | | | of | | Adaptors, | m | | | unstructured | | | edium/device | | | bits over | | Cables, | to be sent | | | physical | | | to other | | | medium. This | | Repeaters | network | | | layer defines | | | device or PC | | | physical and | | | | | | electrical | | | | | | specs for | | | | | | each device. | | | | +————+—————+————+————+————–+ | Data Link | Provides | ARP, RARP, | Bridges | Data to be | | | transfer of | | and | sent or | | | information | FDDI, PPP, | switches | received is | | | in reliable | | | packaged | | | way across | Frame | | into frames | | | physical | Relay | | to transmit | | | link. Also it | | | over | | | | | | | | | handles | | | some kind of | | | errors and | | | medium | | | flow control | | | | | | at Physical | | | | | | Layer | | | | +————+—————+————+————+————–+

[IT273: Networking Concepts]

+————+—————+————+————+————–+ | Network | This layer is | IPSec, | Routers | Determines | | | responsible | EGP, | and | the address | | | for | | Gateways | of the | | | transferring | IGMP, | | network to | | | data from one | IPV4, | | which the | | | source host | | | data needs | | | on network A | IPV6 | | to be sent | | | to | | | to | | | destination | | | | | | host on | | | | | | network B | | | | +============+===============+============+============+==============+ | Transport | Provides | TCP, UDP | Cable | Breaks data | | | dependable | | tester | that was | | | and | | | received | | | | | | into | | | reliable | | | segments and | | | transport or | | | establishes | | | transfer | | | connections | | | between end | | | | | | points | | | | +————+—————+————+————+————–+ | Session | Controls | NFS, | Gateways | Manages | | | structure | NetBios | | | | | | | | established | | | for | | | connection | | | | | | | | | c | | | | | | ommunications | | | | | | between | | | | | | different | | | | | | applications | | | | +————+—————+————+————+————–+ | Pr | This layer | | SSL | Formats data | | esentation | transforms | | | before data | | | data into | | Acc | transfers | | | format that | | elerators, | | | | application | | co | | | | has requested | | ­processors | | +————+—————+————+————+————–+ | A | Provides | HTTP, | Gateways | Exchanges | | pplication | access to OS | SMTP, | | | | | for users | | | information, | | | | SNMP, RTP, | | | | | | | | interacts | | | | POP3, MIME | | with users | +————+—————+————+————+————–+

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