3M0-211 Certified Enterprise LAN Specialist Training Course

Demo Question 7.

Answer: C,E Case Study 4, BantryBayCity Council Scenario BantryBay City Council has an existing Ethernet-based Local Area Network(LAN) Rapid growth has put the network infrastructure under pressure The Council is relocating to a new complex with a number of separate one- and two-story buildings It is installing a high-performance network infrastructure in the new complex. The Council expects a dramatic increase in the demand for network bandwidth The network core must be a high-bandwidth LAN with a Gigabit backbone linking the four main buildings to the data center. The data center forms the central core. The network core/data center service must be maintained if a switch or switch component fails. Also, the core Gigabit-port capacity must provide for 25% growth. The server farm, located at the data center, must always be accessible. The server farm will have at least 12 servers Resiliency and reliability are paramount, especially for the network core and server farm. New switches, wiring closets and building sites must be easily added to the network when required. Virtual LAN (VLAN) support is required to contain broadcast traffic. Network telephony and video are likely to be implemented, so it is essential that all equipment support Ouality of Service (QoS). The desktop connections must be switched, auto-negotiating 10!100-Mbps unshielded twisted pair (UTP) links. The network must support the following requirements: 1. Ethernet standards-based network 2. Data center only connects to the four main buildings 3. Each of the four main buildings requires a distribution layer to connect the surrounding smaller buildings and the wiring closets to the data center 4. 4-Gbps links between the data center and the distribution layer 5. Mix of fiber and UTP 1-Gbps links between the wiring closets and the distribution layer Full service must be maintained if a core or server-farm switch fails 6. The network backbone must use TCP/IP Layer 3 routing 7. Access Control Lists (ACLs) that can filter at Layer 2/Layer 3/Layer 4 are required at the core of the network 8. All equipment must support Layer 2-4 QoS classification and marking, with bandwidth guarantees and bandwidth limiting in the core. The data center and the four main buildings: 1. City Power, Library, Mayor's Office and Conference Center-each requires 96 ports evenly divided between two floors. 2. Each main building is connected to the data center and to four smaller, single-floor buildings on the campus 3. The distance between these buildings is 250 to 500 meters, with existing multimode 50-micron fiber - except for three small buildings, the Store (720 meters), Maintenance Department (630 meters) and Waste Dept (1600 meters), which are connected via fiber connections over a single-mode 9-micronfiber 1. All the smaller, single-floor buildings require 48 network ports - except the City Engineer, Call Center, and Tourism and Publicity buildings, which each need 96 ports. 2. The entire network will have approximately 1,000 ports Case Study 4, BantryBayCity Council (6 Questions)

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