2.4.2 Throughput
In general terms, throughput is the rate of production or the rate at which something can be processed. When used in the context of communication networks, such as Ethernet or packet radio, throughput or network throughput is the rate of successful message delivery over a communication channel. The data these messages belong to may be delivered over a physical or logical link or it can pass through a certain network node. Throughput is usually measured in bits per second, and sometimes in data packets per second or data packets per time slot. The system throughput or aggregate throughput is the sum of the data rates that are delivered to all terminals in a network. The throughput of a communication system may be affected by
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Hotspots typically use Wi-Fi technology. Hotspots may be found in various public establishments in many developed urban areas throughout the world. A hotspot is differentiated from a wireless access point which is the hardware device used to provide the wireless network service. For users of portable computers equipped for wireless, a hotspot is a wireless LAN (local area network) node that provides Internet connection and virtual private network (VPN) access from a given location. For example, a business traveler with a laptop equipped for Wi-Fi can look up a local hot spot, contact it, and get connected through its network to reach the Internet and their own company remotely with a secure …show more content…
Subscription-based hotspot accounts work similar to mobile phone accounts and are usually a time-based subscription service. Once you have registered an account with the provider you access their hotspot in the same way that you would connect to any wireless network. When using subscription based services if you go over your allocated time for your specific plan you will usually pay a higher per minute rate for connectivity. A public hotspot is not nearly as secure as your corporate or home network. In fact, most public hotspots don't offer any security at all, making these types of wireless networks inherently unsecure. This is because encryption methods such as WEP and WPA, which are usually used to protect private wireless networks, are not implemented due to the complexities of supporting users. For security and privacy reasons there are some precautions and things to consider when connecting to a public hotspot to make your connection more secure. Using an open public network is the easiest way to create a free hotspot. All that is needed is a Wi-Fi router. Similarly, when users of private wireless routers turn off their authentication requirements, opening their connection, intentionally or not, they permit sharing by anyone in
The SIFS( Shortest Inter-Frame Space),derives the time between the last transmission and high priority transmissions such as positive acknowledgments(ACKs),Clear-To-Send(CTS)frames,polling responses, continuation frames in a burst transmission. priority is given to the positive ACK frames so that a station which has just completed the reception of a frame can give immediate feedback to the sender. RTS and CTS frame coordinate correspondence between sets of stations so that different stations know not the medium to be free for the time of the exchange .This is one of the reasons for why the control frames have priority over normal data transmissions. If a station finished transmitting a frame and has enough time left to send an additional frame, it is allowed to send after a SIFS.
Assessment 3 – Assignment 1 Student Name: John Matanisiga Student ID No: S11124727 1. The difference between these wireless encryption is that WEP is wired equivalent privacy, a default procedure for wired security networks, WPA is an upgrade from WEP, and it is a wireless protected access to networks, whereas WPA2 is modernized into a more secure Wi-Fi from WPA. 2. With Static addressing, a computer (or other device) is configured to always use the same IP address, whereas dynamic addressing, the IP address can change periodically and is managed by a centralized network service.
The main difference of a WiFi to Token ring and Ethernet networks is that it does not require a physical media from the source to the receiver to create a network and establish a connection, although WiFi would not compete with speeds of data transfer of an Ethernet. A WiFi connection is made by using a wireless adapter(that converts digital information to radio waves and back with antenna) to create a hotspots that allow access to internet service. WiFi technology is using 802.11 networking standards (802.11a, 802.11b, 802.11n etc. ) that will depend on needs for the user. In wireless networks there are two logical typologies that are use, a star and point-to-point (devices connect directly to each other and do not need access point device to communicate), in general WiFi speed is on average 20Mbps, however it can vary on many factor like distance between users and source or media radio waves has to travel through on the way to the user and
(i) Each user transmits only 10% of the time, means a user is idle in 90% of the time, transmits in 10% of the time. \therefore The Probability P=10% (ii) Using Binomial Distribution, P(X=n)=\binom{120}{n}p^{n}\left (1-P)^{120-n} Where P is the Probability of one user is transmitting. (iii)
a). Based on the observation, we assume that the distance between two stations is 0.375 KM Mean time to send = propogation time + transmission time = 375m. + 1000bits 200 x 106 m/sec. 10 000 000 bps. = 102 μsec. b).
We observe the network throughput (in Mbps) by varing the following four parameters: (i) The numer of UE, say $N_{ue}$. (ii) Per UE's CBR traffic data rate, say $R_{cbr}$, in unit of kbps. (iii) Per UE's random walk speed, say $V_{walk}$, in unit of km/hr. (iv) The transmission power of the SeNB, say $P_{senb}$, in unit of dBm. The proposed traffic scheduler works every 100 TTIs, i.e., we set $I_t=100$ ms.
It is easily configured. OpenVPN isn’t vendor supported that is why a third party application is required to run it on mobile devices and computers. 5. SSTP—SSTP is Secure Socket Tunneling Protocol.
WPA2 –Wi-Fi protected access version 2 This security was made because of the 802.11i wireless security standard. WPA2 is very similar to WPA but it uses AES – advanced encryption standard to encrypt. AES has a 128 bit key whereas DES – data encryption standard which was used before AES has a 64bit key. 64bit keys take a lot less time to break than 128bit key.
Madeleine, Since you now have lotus access, I would assume that the google access has been activated as well. Please visit google.wcpss.net in order to access docs that are shared and tools that are used. Your login information is the same as your email. You have unlimited cloud storage as well if you need to upload files.
Wifi WPS: It stands for “Wi-Fi Protected Setup” and provides simplified mechanisms to configure secure wireless
Security: Routing protocols should have security techniques. The routing protocol is highly susceptible to security attacks, because of the inherent features of WSNs, particularly in military applications. 5. Multiple Sources: Almost all of the available routing protocols in WSNs are planned for single source multicasting. Although a multicast group may carry multiple sources due to different types of services or applications simultaneously offered by the network.
Wireless technology is used for data transmission. Wireless technology carries a particular information from one place to another. Examples of wireless technologies are a remote control because while you’re using it, it sends control commands information to your TV making you want to change the channel or record a particular programme. Another example of wireless technology is a wireless sound system because it sends audio information to speakers and headphones. Bluetooth is a wireless technology used for the exchanging of data over short distances.
Sharing Internet Access: within a computer network learners are able to access the internet at once. Speed: Using a network is a faster way for sharing and transferring files. Without a network, files are shared by replicating them to a floppy disk. Cost: Networkable versions of many popular software programmes are available at significant savings compared to buying individual licensed copies. It also allows easier upgrading of the program.
DesMarais explains that, “Location services company Navizon says that ITS can provide accurate tracking of Wi-Fi enabled devices…” (DesMarais, 2012). Any device that is connected to the internet can be tracked and anyone can use this to find the location of the owner. She states that “... what's really interesting about Skyhook is its ability to profile individual devices… and know which ones are associated with certain kinds of people”(DesMarais, 2012). Skyhook is a hybrid location system that determines the coordinates of a device, even indoors.
Communication Technology Technology has changed our lifestyle and is continuing to alter it. Every aspect of our life has been somehow touched by technology. However, technology has made a significant impact on the way we communicate and new communication technologies are continuously improving and being used in everyday life. It has become an essential part of most our lives because we, as a human species, have always had this deep desire to communicate, and to communicate over distance. The obstruction of connecting two regions has drastically decreased due to the fact that we now have mobile phones, Internet, and social media to make life easier.