CIS246 Course Discussions Week 5


CIS246 Course Discussions Week 5
What standards govern wireless transmissions? How do we secure our wireless…

SKU: CIS 246 Wireless Networks and VoIP Categories: , Tags: , , ,


CIS246 Course Discussions Week 5

CIS246 Course Discussions Week 5

All Students Posts – 52 Pages 

Wireless Networks – 27 Pages 

Today, wireless transmission media are commonplace in business as well as residential applications, and their application is growing. This week, we will learn about wireless technology by starting with the fundamentals. How are wireless signals carried? What are the obstacles to successful transmissions and their repercussions? What standards govern wireless transmissions? How do we secure our wireless networks?

WPA2 has started to replace WPA, as it is more secure. WEP is also a wireless method that is another option. WEP is part of the IEEE 802.11 wireless networking standard and was designed to provide the same level of security as that of a wired LAN. WEP provides security by encrypting data over radio waves so that it is protected as it is transmitted from one end point to another. However, recently it has proven to not be as secure as originally thought. WEP is used at the two lowest layers of the OSI model – the data link and physical layers; it therefore does not offer end-to-end security…

VoIP – 25 Pages 

Traditionally, packet-switched networks carried primarily data and the public switched telephone network (PSTN) carried telephone calls and fax transmissions. Convergence is the use of one network to carry data, voice, and video communications simultaneously. Let’s begin this discussion by identifying and discussing key terms such as IP telephony or VoIP, VoATM, VoDSL, Internet telephony, FoIP, and video over IP.

The biggest problem I have found with VoIP is the call quality and the fact that switching to VoIP is not always a savings. Just recently I canceled my home phone service and just use cell phones and internet. Since the only internet provider in my area was my phone company, they wanted to charge nearly the same amount for just internet as they did for a phone/internet package. They just recently changed their pricing to where it made sense to drop my phone service. I was already aware that I would lose internet during a power outage, and therefore would lose phone service if I was using VoIP. I have used a VoIP service in the past called MagicJack and it seemed fine. You could take it anywhere you had internet and make and receive calls. I just rarely used it because I rely predominantly on my cell phone. I would definitely use it for my business phone and drop the land line if the prices were any different. The phone company still abuses you if you are a business…