Asymmetric Digital Subscriber Line

computers or essentially any end systems to access the Internet. Originally, phone lines were used to carry analog information and a converter was needed to decode these signals, therefore the modem was born. Initially, modems were used as a way for Teletype machines (printers) to communicate over telephone lines. In the 1960’s however, modems became much more popular thanks to AT&T by introducing modems that…

of network gives the ability to have secure remote access. For access, the VPN needs to be setup for a person tap directly into all the resources their work network while in a remote place. For example, an employee is on vacation and the office needs the employee to check on critical documents before processing, with a VPN the employee can log in and link directly to check all the critical documents. To summarize the Home Network Configuration image (n.d.), the network starts on the GAN (Global…

methods to reach their customer base is to interview their customers, observe them in the store or to make the customers undertake a survey, in store or online. (Data collection techniques, 2014). Carmel and Debbie also have to think about privacy and ethical issues. They want to use their information systems to track the customer’s buying habits, as many shopping organisations do this to track their customers buying habits, but they need to protect their customer’s data and their privacy, and…

Therefore, “surfing” the Web and “surfing” the internet are two different things. Although the task of retrieving a webpage can be completed in a matter of seconds, it is actually a complex process. Firstly, your device sends a request to the Domain Name System through a router and modem (These are now commonly built into one device), this message then travels to an exchange via a telephone line (ADSL) or Fibre Optic cable (FTTH) and then on to the Internet Service Provider’s network and their…

(Opposite Main Post Office). Econet Telecom Lesotho (Pty) Ltd. provides telecommunication services. (www.investing.businessweek.com)It offers fixed and mobile solutions, including post paid and pre-paid, as well as business solutions for corporate organizations, enterprises, and private individuals. The company provides data solutions, such as leased lines, Very-Small-Aperture-Terminal (VSAT), Asymmetric Digital Subscriber Line (ADSL), evolution data only/evolution data optimized, and wireless…

the DNS Server 5.7.4 Web Client-Server Interaction: TCP and HTTP 5.8 Summary Homework Problems and Questions Wireshark Labs: Ethernet and ARP, DHCP Interview: Simon S. Lam 461 462 469 476 482 486 487 490 495 495 497 498 499 500 502 510 511 Chapter 6 Wireless and Mobile Networks 6.1 6.2 6.3 Introduction Wireless Links and Network Characteristics 6.2.1 CDMA WiFi: 802.11 Wireless LANs 6.3.1 The 802.11 Architecture 6.3.2 The 802.11 MAC Protocol 6.3.3 The IEEE 802.11 Frame 6.3.4 Mobility in…