Week 3 Cis532 Discussions

A) Week 3 dis 1

Present real-world examples that describe the significance of designing modular, redundant, and secure network architectures. Defend your answer from a technical perspective. A real world example that describes the significance of designing modular, redundant, and secure network architectures is the Cisco Enterprise Architecture. The modularity built into the architecture allows for a lot of flexibility in network design and facilitates implementation and troubleshooting. This type of architecture is one that allows for large and complex tasks to be broke down by reducing the enterprise network into further physical, logical, and functional areas to scale the hierarchical model. Instead of designing using only the hierarchical model, networks can also be designed using Cisco Enterprise Architecture, with hierarchy access, distribution, and core (Teare, 2008).

Reference

Teare, D. (2008, June 12). Structuring and modularizing the network with cisco enterprise architecture. Retrieved from http://www.ciscopress.com/articles/article.asp?p=1073230&seqNum=2

B) Week 3 dis 2

Contrast the various types of servers or services that can be placed at the access, distribution, and core layers. First, you have the core layer. This layer is considered the backbone of the network and includes the high-end switches and high-speed cables such as fiber cables. This layer of the network does not route traffic at the LAN. In addition, no packet manipulation is done by devices in this layer. Rather, this layer is concerned with speed and ensures reliable delivery of packets. This layer is also responsible for fast and reliable transportation of data across a network. Its purpose is to reduce the latency time in the delivery of packets. The factors to be considered while designing devices to be used in the core layer are:

* High data transfer rate: Speed is important at the core layer. One way that core networks enable high data transfer rates is...