ITP4928 Tutorial 1

1.	(a)	A typical enterprise hierarchical network includes the access Layer, distribution layer and core layer. Match the hierarchical network layer with its characteristic.                      [3] Layer Characteristic Core Enables fast transport services between campuses. Access Provides admission to the network for network and workgroup users. Distribution Provides policy-based network connectivity and control.
	(b)	In the following diagram, the switch that connects school site 2 to the NOC is serving as both a distribution layer switch and core layer switch. Which type of Cisco hierarchical LAN design module is used at school site 2?            [2]
		Two-tier collapsed core
2.	A modular approach to network design further divides the three-layer hierarchical design, by pulling out specific blocks or modular areas. These basic modules are connected together via the core of the network. Match the following basic network modules with its description,                   [4] Access-distribution, Services, Data center, Enterprise Edge Basic Network Modules Description Data center Originally called the server farm. This block is responsible for managing and maintaining many data systems that are vital to modern business operations. Enterprise Edge Consists of the Internet Edge and the WAN Edge. These blocks offer connectivity to voice, video, and data services outside the enterprise. Services This is a generic block used to identify services such as centralized Lightweight Access Point Protocol (LWAPP) wireless controllers, unified communications services, policy gateways, and more Access-distribution Also called the distribution block, this is the most familiar element and fundamental component of a campus design
3.	Match the following Cisco Enterprise Architecture with its description.                      [6] Enterprise Branch, Service Provider Edge, Enterprise Data Center, Enterprise Campus, Enterprise Teleworker, Enterprise Edge, Cisco Enterprise Architecture Module Description Enterprise Campus Connects users within the campus, server farm, and enterprise edge modules. Enterprise Edge Aggregates the connectivity from the various functional areas at the enterprise edge and routes the traffic into the campus core submodule. Service Provider Edge Service Provider Environment, provides connectivity between the enterprise campus module to the remote enterprise data center, enterprise branch, and enterprise teleworker modules.  Enterprise Branch extends the applications and services of the campus to remote locations Enterprise Teleworker connects individuals to network resources remotely Enterprise Data Center manages and maintains centralized data systems

4.	Write down the number next to the Cisco Enterprise Architecture module names to its correction location in the graphic provided.                                                   [8]
5.	(a)	Identify the characteristics of LAN and WAN                                      [5] Characteristic LAN/WAN (a) Connects computers, peripherals, and other devices in a single building or other small geographic area LAN (b) Connects devices that are separated by a broader geographical area WAN (c) Typically owned by the company or organization that uses them LAN (d) Uses the services of carriers, such as telephone companies, cable companies, satellite systems, and network providers WAN (e) Uses serial connections of various types to provide access to bandwidth over large geographic areas WAN
	(b)	Briefly describe any TWO main business needs to use WAN.                          [4]
		Any Two of the followings, · People in the regional or branch offices of an organization need to be able to communicate and share data with the central site. · Organizations often want to share information with other organizations across large distances. For example, software manufacturers routinely communicate product and promotion information to distributors that sell their products to end users. · Employees who travel on company business frequently need to access information that resides on their corporate networks.

	(c)	Which two OSI layers do WAN operations primarily focus on?                        [2]
		Layer 1 and Layer 2
	(d)	List the three functions of WAN access standards.                                   [3]
		Physical addressing, flow control, and encapsulation
6.	Mach the following WAN terms to their definitions.                                      [5] Toll Network, Local Loop, Data Terminal Equipment (DTE), Customer Premises Equipment (CPE), Data Communications Equipment (DCE), Demarcation Point, Definition WAN Term The cabling that connects the CPE to the CO. Local Loop The cabling and equipment inside the WAN provider network. Toll Network Primarily provides an interface to connect subscriber to communication link in the WAN cloud. Data Communications Equipment (DCE) The devices owned or leased by customer that connect to the carrier Data Terminal Equipment (DTE) Separate customer equipment from service provider equipment. Demarcation Point
7.	Fill in the missing WAN link connection options in the following diagram.                   [8]