1. Fill in the blank. A __converged__network is capable of delivering voice, video, text, and graphics over the same communication channels. 2. What type of network must a home user access in order to do online shopping? An extranet a local area network an intranet the Internet 3. Match each characteristic to its corresponding Internet connectivity type. (Not all options are used.)  satellite -> Not suited for heavily wooded areas dialup telephone -> typically has very low bandwidth DSL -> high bandwidth connection that runs over telephone line cable -> uses coaxial cable as a medium 4. Match the description to the form of network communication. (Not all options are used.) Web pages that groups of people can edit and view together -> wiki Interactive websites where people created and share user-generated content with friends and family -> Social media real-time communication of between two or more people -> instant messaging an audio-based medium that allows people to deliver their recordings to a wide audience -> podcast 5. Which device performs the function of determining the path that messages should take through internetworks? a web server a router a firewall a DSL modem 6. A user is implementing security on a small office network. Which two actions would provide the minimum security requirements for this network? (Choose two.) implementing an intrusion detection system implementing a firewall installing a wireless network installing antivirus software adding a dedicated intrusion prevention device 7. Which two statements describe intermediary devices? (Choose two.) Intermediary devices connect individual hosts to the network. Intermediary devices generate data content. Intermediary devices initiate the encapsulation process. Intermediary devices direct the path of the data. Intermediary devices alter data content. 8. Match the definition to the security goal. (Not all options are used.) maintaining integrity -> the assurance that the information has not been altered during transmission ensuring confidentiality -> only the intended recipients can access and read the data ensuring availability -> the assurance of timely and reliable access to data 9. What is the Internet? It provides connections through interconnected global networks. It is a network based on Ethernet technology. It is a private network for an organization with LAN and WAN connections. It provides network access for mobile devices. 10. A company is contemplating whether to use a client/server or a peer-to-peer network. What are three characteristics of a peer-to-peer network? (Choose three.) lacks centralized administration easy to create scalable better security better device performance when acting as both client and server less cost to implement 11. What two criteria are used to help select a network medium from various network media? (Choose two.) the types of data that need to be prioritized the distance the selected medium can successfully carry a signal the number of intermediary devices installed in the network the environment where the selected medium is to be installed the cost of the end devices utilized in the network 12. Which statement describes a characteristic of cloud computing? Devices can connect to the Internet through existing electrical wiring. A business can connect directly to the Internet without the use of an ISP. Investment in new infrastructure is required in order to access the cloud. Applications can be accessed over the Internet by individual users or businesses using any device, anywhere in the world. 13. Which two connection options provide an always-on, high-bandwidth Internet connection to computers in a home office? (Choose two.) dial-up telephone cellular satellite DSL cable 14. Which expression accurately defines the term bandwidth? a measure of the data carrying capacity of the media a set of techniques to manage the utilization of network resources a state where the demand on the network resources exceeds the available capacity a method of limiting the impact of a hardware or software failure on the network 15. Which area of the network would a college IT staff most likely have to redesign as a direct result of many students bringing their own tablets and smartphones to school to access school resources? intranet wireless WAN extranet wireless LAN wired LAN 16. Which term describes the state of a network when the demand on the network resources exceeds the available capacity? synchronization congestion convergence optimization 17. A network administrator is implementing a policy that requires strong, complex passwords. Which data protection goal does this policy support? Data redundancy data quality data integrity data confidentiality 18. What are two functions of end devices on a network? (Choose two.) They provide the channel over which the network message travels. They direct data over alternate paths in the event of link failures. They originate the data that flows through the network. They filter the flow of data to enhance security. They are the interface between humans and the communication network. 19. What type of network traffic requires QoS? wiki on-line purchasing video conferencing 20. What security violation would cause the most amount of damage to the life of a home user? capturing of personal data that leads to identity theft replication of worms and viruses in your computer denial of service to your email server spyware that leads to spam emails 21. Which statement describes the use of powerline networking technology? New “smart” electrical cabling is used to extend an existing home LAN. A device connects to an existing home LAN using an adapter and an existing electrical outlet. Wireless access points use powerline adapters to distribute data through the home LAN. A home LAN is installed without the use of physical cabling. 22. Fill in the blank. The acronym __byod__ refers to the policy that allows employees to use their personal devices in the business office to access the network and other resources. 23. An employee at a branch office is creating a quote for a customer. In order to do this, the employee needs to access confidential pricing information from internal servers at the Head Office. What type of network would the employee access? an intranet the Internet an extranet a local area network 24. Which two Internet connection options do not require that physical cables be run to the building? (Choose two.) dedicated leased line dialup satellite cellular DSL
When you connect to the Internet, you might connect through a regular modem, through a local-area network connection in your office, through a cable modem or through a digital subscriber line (DSL) connection. DSL is a very high-speed connection that uses the same wires as a regular telephone line. Here are some advantages of DSL:
But there are disadvantages:
In this article, we explain how a DSL connection manages to squeeze more information through a standard phone line -- and lets you make regular telephone calls even when you're online. Telephone LinesIf you have read How Telephones Work, then you know that a standard telephone installation in the United States consists of a pair of copper wires that the phone company installs in your home. The copper wires have lots of room for carrying more than your phone conversations -- they are capable of handling a much greater bandwidth, or range of frequencies, than that demanded for voice. DSL exploits this "extra capacity" to carry information on the wire without disturbing the line's ability to carry conversations. The entire plan is based on matching particular frequencies to specific tasks. To understand DSL, you first need to know a couple of things about a normal telephone line -- the kind that telephone professionals call POTS, for Plain Old Telephone Service. One of the ways that POTS makes the most of the telephone company's wires and equipment is by limiting the frequencies that the switches, telephones and other equipment will carry. Human voices, speaking in normal conversational tones, can be carried in a frequency range of 0 to 3,400 Hertz (cycles per second -- see How Telephones Work for a great demonstration of this). This range of frequencies is tiny. For example, compare this to the range of most stereo speakers, which cover from roughly 20 Hertz to 20,000 Hertz. And the wires themselves have the potential to handle frequencies up to several million Hertz in most cases. The use of such a small portion of the wire's total bandwidth is historical -- remember that the telephone system has been in place, using a pair of copper wires to each home, for about a century. By limiting the frequencies carried over the lines, the telephone system can pack lots of wires into a very small space without worrying about interference between lines. Modern equipment that sends digital rather than analog data can safely use much more of the telephone line's capacity. DSL does just that. A DSL internet connection is one of many effective communication tools for keeping employees in touch with the office. |
Which connection options provide an always on high bandwidth Internet connection to computers in a home office *?
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