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WORKI SECTI nections INTERACTIVE SUMMARY Networks Skype such a classified as gured in various and Data interne chech tools SECTION A Words can be classified by peo ca pe as PANS an equipment includes computers. Data WAS The band signal transport dat point-point or bus. Any device in a network from one more device te aromer are communication Wired channels include with sed for at television obsed for high capacity equipment includes modems and routers OCES include hubs. switches bridges, repe access points News to inte transport and arrival communication to set the rules for efficiently transmitting data and erro rukes Wireless chamels se als and microwaves Government agencies regulate some wireless The transmission capac y of channel is referred to as Channels that are capable of moving at least 25 Mops are addresses are 32 bits long, whereas addresses are 128 bits long, providing bilions and SECTION B: The Internet is based on a US govern ment project called Today, the lions of possible addresses. Addresses are assigned Internet is a collection of networks, tied together by com- servers. IP addresses that are mon Tier 1 networks form the add Internet a system of high-capacity rarily assigned are called routers and fiber optic communication links arranged in arn) whereas permanent ones are called topology Networks that form the addresses IP addresses cannot Internet are maintained by that routed over the Internet and are usually assigned to delion offer access to consumers. Before data travels over the within LANs. Because it is difficult to remember IP address Internet, it is divided into by a pro- the name system allocates 6my tocol called which also reassem- remember names, such as nike.com bles the data when it reaches its destination. Every device level domains include com and.edu. The servers that on the Internet uses an IP address these names are a vulnerable point in Internet security 235 Mops are acceptable, whereas w stop speed lowed by you sowo 3 3 SECTION C. The speed and quality of internet ons vary Foremat and bewig Web of as options intamal de calls require 1.5 Mbps connections. Your band 18 available from car services Internet service after dependable connections wer cox! et access plan. You can and the cables. The fastestening that uses the telephone the latency of an Internet connection. You can online Bet net service check for packet loss and I wallable in remote areas butsutterstrom rights of w the way in packet latency. Another unity Caled Mobile broadband services offered reports the path that your data takes texting and data pe by cell phone companies usually enters for a offer yet for its destination Options for another internet comes option, though we have to be vig nemet access include cable, OSLISON site, and lant about security trace 3 SECTION D:Local area networks use many of the activistes zame network technologies as the Internet, only on a smaller signals from being intercepted during transmision. A wed Jo Devices that access LANs are equipped with a network access network can be created for that contains circuitry for visitors to use. By activating wireless or wired connections Devices also have a physical router will be able to asign IP addresses to each device that address, in addition to the IP addresses joins the network. To connect to a secure LAN that is pro acquired from a DHCP server. The most popular wired tech tected by encryption, an encryption The most popular wireless of password, is required LANs can be used to access data which can be config collected by loT devices and the networks that lie these ured as an) or star topology Setting devices together. Technologies such as RFID, NFC, Bluetooth up a LAN and configuring its router is fairly easy. The first Smart, ZigBee, and Z-Wave ofter to one -power links, essential for battery-powered devices that can't that expend excess amounts of energy transmitting data that is secure Next, create ain) uniquely identifies the network by name. It is also important to nology technology is step is to change the standard SECTION E: File sharing allows files containing docu- used. File sharing is also possible across networks, as when ments, photos, music, and other data to be accessed from you download files from Internet servers. One technology used computers other than the one on which they are stored. To for this purpose is which provides a way to transfer files over any TCP/IP network. Another file access files on a LAN, network distributes allows your computer to see other devices and permits other sharing protocol called the role of a file server across a collection of dispersed com. devices to see your computer Sharing the files on your computer poses a security risk, but it is possible to specify for how your shared files can be puters