Week4 Discussion
Supporting Activity: Introduction to the OSI Protocol Model Format
Write a 100- to 200-word response to the following:
6• I think that corporate wireless are very secure and for the most part is hard to penetrate those networks , however public wireless networks do not really introduce new vulnerabilities; instead, they reintroduce old problems.
What I mean by this is simple: in most modern business wireless LANs, security is implemented. In most public wireless shot spots, no security is implemented. The end result is that the clients connecting to the public hotspot may be vulnerable to eavesdropping attacks or penetration attacks if they are not made otherwise secure.
Clients that connect to public wireless networks are susceptible to the same attacks as any nonsecured wireless clients. These attacks include:
Eavesdropping
Data theft
Data insertion
Supporting Activity: Introduction to Wireless
Write a 100- to 200-word response to the following question:
7 The OSI model was officially adapted as a standard by ISO in 1979. Some might say that it is an old standard. Well, it is old. What kept this model alive for so long is its capacity of expansion to meet the evolving needs.
Most of the work that created the base for the OSI model was done by a group at Honeywell Information Systems. The head of this group was Mike Canepa. This group started addressing the lack of standardization problem in the mid 1970s of the past century and they came up with a proposal named Distributed Systems Architecture, DSA. By that time, the British Standards Institute submitted a proposal to the ISO saying that there is a need for unified standard communication architecture for distributed processing systems.
Responding to this proposal, the ISO formed a subcommittee on Open System Interconnection. The ISO also made American National Standards Institution (ANSI) in-charge of preparing proposals prior to the first official meeting of the subcommittee. Canepa’s group participated in the ANSI meetings to discuss their seven-layer proposal. Later, ANSI chose to provide Canepa’s proposal as the only one to be submitted to the ISO subcommittee.
Supporting Activity: Network Operating Systems
Write a 100- to 200-word response to the following questions:
8. Remember the idea of the model system is not to tell you how the network actually operates, but to define the elements and functions that compose a network in a way that makes these elements and functions distinct and distributable on layers. This distinction provides the ability to protocols to operate in a smooth way and to be easy to troubleshoot.
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