You have been hired as a Network Analyst for WDKA, Inc. WDKA has a single site l

Question

You have been hired as a Network Analyst for WDKA, Inc. WDKA has a single site located in Perrysburg, Ohio, with 32 devices on an Ethernet network. Your job is to link WDKA’s existing network to the Internet. The internal network number is 10.5.10.0/24 and cannot be changed. When WDKA originally installed the network, IP address 10.5.10.1 was reserved for the “Internet router” (The “Internet router” has not yet been purchased). WDKA would also like to use their internal Windows 2012 Exchange Server as their inbound SMTP mail server. The IP address of the Exchange Server is 10.5.10.43. WDKA is unsure of how to obtain an Internet connection and which items to purchase.

a. Discuss the various methods by which WDKA might connect to the Internet (both physical and logical connections). Make a judgment about which physical and logical method(s) might be best for WDKA and explain all Security measures you would recommend to WDKA. Justify your answer.

Explanation / Answer

DESCRIPTION:

Physical Connection:

Phusical in the sense 'touchable' that means we can feel it. It is the physical medium between two points, but also including a larger network -- all the nodes, such as the switches and routers between any two points from any two points.

Logical Connection:

The logical is more of an abstract concept(we cannot see it) the organization (topology) of the network. It's soft (software configuration), non-tangible(cannot be sensed). Eg: VLAN's (Virtual LAN's/networks) - OSI layer 2 separaton, IP subnets - OSI layer 3 separation, tunnel/VPN technologies ... GRE, MPLS/VPLS, etc.   Autonomous systems, devices grouped by common management or routing domains, are also logical. You cannot see them by physically looking at them, you need to derive it from looking at software/soft configurations. Think virtualized; even data circuits are more virtual than ever.multiplexing, DWDM.

Topologies :

There are two types of topologies

1.Physical Topology

2.Logical Topology

Physical Topology:

Cabling layout used to link devices is the physical topology of the network. This topology refers to the layout of cabling, the locations of nodes, and the interconnections between the nodes and the cabling.

Logical Topology:

Logical topology is a way that the signals act on the network media, or the way that the data passes through the network from one device to the next without regard to the physical interconnection of the devices. A network's logical topology is not necessarily the same as its physical topology.

Internet Topology:

Internet topology is the network topology.Internet architecture is organized into several planes. The data plane represents how data is actually forwarded between routers. Topologies based on the data plane reflect physical nodes and connections but these topology graphs are hard to create and harder to validate for correctness or completeness.

Access methods for connecting to internet for WDKA:

Dial-Up Connection:

Dial-up connections require users to link their phone line to a computer in order to access the Internet. This particular type of connection—also referred to as analog—does not permit users to make or receive phone calls through their home phone service while using the Internet.

DSL Connection:

DSL, which stands for Digital Subscriber Line, uses existing 2-wire copper telephone line connected to one’s home so service is delivered at the same time as landline telephone service. Customers can still place calls while surfing the Internet.

Broadband Connection:

This high-speed Internet connection is provided through either cable or telephone companies. One of the fastest options available, broadband Internet uses multiple data channels to send large quantities of information. The term broadband is shorthand for broad bandwidth. Broadband Internet connections such as DSL and cable are considered high-bandwidth connections. Although many DSL connections can be considered broadband, not all broadband connections are DSL.

Cable Connection:

Cable Internet connection is a form of broadband access. Through use of a cable modem, users can access the Internet over cable TV lines. Cable modems can provide extremely fast access to the Internet.

Satellite Connection :

In certain areas where broadband connection is not yet offered, a satellite Internet option may be available. Similar to wireless access, satellite connection utilizes a modem.

ISDN Connection:

ISDN (Integrated Services Digital Network) allows users to send data, voice and video content over digital telephone lines or standard telephone wires. The installation of an ISDN adapter is required at both ends of the transmission—on the part of the user as well as the Internet access provider.

There are quite a few other Internet connection options available, including T-1 lines, T-3 lines, OC (Optical Carrier) and other DSL technologies.

Logical Connections are the best topologies while connecting to internet.

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