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Protocols

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Submitted By LawrencePeterson
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Lawrence Peterson
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LAB 3.1-3.4
3.1.1 – WHAT WOULD HAPPEN IF WIRELESS DEVICES WERE NOT GOVERNED BY THE WI-FI ALLIANCE AND EACH VENDOR HAD ITS OWN STANDARDS AND PROTOCOLS?
A. WIRELESS DEVICES WOULD HAVE DIFFICULTY COMMUNICATING. WHAT IS OKAY WITH ONE VENDOR MAY NOT BE OKAY WITH ANOTHER VENDOR. PRICES OF DEVICES AND CONNECTIONS WOULD ALSO CHANGE.
3.1.2 – GIVE AN EXAMPLE OF A MODEL THAT IS USED TO VISUALIZE SOMETHING THAT IS DIFFICULT TO OBSERVE OR PERCEIVE.
A. CONNECTIONS REQUIRING ROUTER EQUIPMENT – HUBS, SWITCHES AND ROUTERS.
3.1.3 – WHAT ARE THE DIFFERENT LAYERS YOU THINK WOULD BE NECESSARY FOR COMMUNICATION TO BE MAPPED TO A MODEL?
A. APPLICATION LAYER, PRESENTATION LAYER, SESSION LAYER, TRANSPORT LAYER, DATA LINK LAYER AND PHYSICAL LAYER.
3.1.4 – WHAT WILL HAPPEN IF A MODEL IS TOO GENERAL? TOO GRANULAR?
A. THE MODEL WOULD NOT BE FLEXIBLE IF TOO GENERAL; IF TOO GRANULAR, A LOAD IMBALANCE WOULD OCCUR.
3.1 REVIEW –
1. WHY WOULD A 3-LAYER MODEL OF COMMUNICATION THAT HAS THE LAYERS PHYSICAL, NETWORK AND APPLICATIONS BE INSUFFICIENT TO ADEQUATELY DESCRIBE NETWORK COMMUNICATIONS?
A. THE 7-LAYER COMMUNICATION MODEL WAS TESTED AND SUCCESSFULLY PROVEN TO WORK. IF A LAYER IS MISSING THE MODEL WILL NOT WORK PROPERLY.
2. WHAT IS THE HISTORY OF THE OSI REFERENCE MODEL?
A. TO SERVE AS THE FOUNDATION OF THE ESTABLISHED WIDELY ADOPTED SUITE OF PROTOCOLS THAT ARE USED BY INTERNATIONAL INTERNETWORKS.
3. WHAT IS THE HISTORY OF THE TCP/IP MODEL?
A. BOTH DEVELOPED TOGETHER (INTERNET AND TCP/IP) AND PROVIDED THE STANDARD FOR IMPLEMENTING THE INTERNET AND CONTINUES TO ENVOLVE MEETING STANDARDS BY THE INTERNET AND PRIVATE NETWORKS.

3.2.1 – DEFINE EACH LAYER OF THE OSI MODEL.
A. PHYSICAL LAYER – THE PHYSICAL TRANSMISSION OF BITS – PROVIDES ELECTRICAL, MECHANICAL AND PROCEDURAL INTERFACE TO TRANSMITTED DATA.
DATA

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