RRHS IT Lesson 03
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A LAN can be connected to the Internet by a router, provided that the LAN uses:
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Transmission Control Protocol/Internet Protocol (TCP/IP)
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What is the term for individual computers and devices that are connected to a network?
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Nodes
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In the client/server model:
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the server is responsible for storing and providing information.
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What enabled private (i.e., commercial) business to be conducted over networks connected to NSFnet?
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Private telecommunications companies
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What is the term for a device that determines the best path for data to take across a network?
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Router
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What elements required to connect to the Internet are generally acquired when you buy a computer?
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Computer, operating system and TCP/IP
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What is the term for a device that converts digital data from a computer into analog signals and back again?
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Modem
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What wireless mode types uses a centralized access point known as a wireless access point (AP)?
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Infrastructure
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A wireless access point (AP) is:
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a device that enables wireless systems to communicate with each other, provided that they are on the same network.
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The 802.11 standard, which was developed by the Institute of Electrical and Electronics Engineers (IEEE), refers to a family of specifications for:
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wireless network technology.
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What are T carriers?
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Dedicated digital telephone lines used in North America
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What are fractional T and E lines?
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Digital phone lines consisting of one or more individual T or E carrier channels, rather than the entire T or E carrier line
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For what purpose would you use a cable modem?
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To connect to the Internet through your cable television system
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What statements is true about Digital Subscriber Line (DSL)?
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DSL is similar to Integrated Services Digital Network (ISDN) lines, but DSL is much faster.
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Which device connects a wireless local area network to a wireless phone network at broadband speeds?
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4G mobile hotspot
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In computer terminology, what is a network?
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A group of two or more computers connected so they can communicate, share resources and exchange information with one another
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What is the primary function of a network server?
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To act as a central repository of programs and data to which all users connected to the network have access
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What is the main purpose of a file server?
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To store shared data
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In the client/server environment, what is the main function of client software?
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It enables users to communicate with and request information from the server.
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What is a local area network (LAN)?
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A group of computers connected within a confined geographic area
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What is a wide area network (WAN)?
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Two or more local area networks (LANs) that span a wide geographic area
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How are wide area networks (WANs) created?
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By connecting LANs to one another via public carriers
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What is the Internet?
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A worldwide network of interconnected networks
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In 1969, which U.S. Department of Defense agency funded what would become the first global computer network?
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The Advanced Research Projects Agency (ARPA)
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What is the World Wide Web?
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A set of software programs that enables users to access resources on the Internet via hypertext documents
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What happens when you click a hypertext link?
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Another location in the same Web page or another Web page appears
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What is the term for an HTML document containing one or more elements, such as text, images and hyperlinks, that can be linked to or from other HTML pages?
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Web page
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What is the term for a collection of related HTML documents located on a host computer on the Internet?
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Web site
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What is the term for a software application that enables users to access and view Web pages on the Internet?
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Web browser
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Why might a Web page appear differently in different browsers?
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Each browser interprets HTML somewhat differently
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What enables dissimilar systems connected to the Internet to communicate with one another?
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Transmission Control Protocol/Internet Protocol (TCP/IP)
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What is responsible for ensuring that data packets are transferred quickly and reliably across a network?
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Transmission Control Protocol/Internet Protocol (TCP/IP)
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What is the term for an organization that maintains a gateway to the Internet and rents access to customers on a per-use or subscription basis?
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Internet Service Provider (ISP)
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What dial-up connection types has been largely superseded by direct Internet connections?
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Integrated Services Digital Network (ISDN)
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Direct Internet connections:
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provide continuous access to the Internet through permanent network connections.
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What are E carriers?
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Dedicated digital telephone lines used in Europe
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What connection types provides the fastest direct connection speed?
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Fiber-optic cable
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What is a top-level domain in the Domain Name System (DNS)?
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The right-side component of a domain name, which categorizes domains into groups by common type or geography
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What is Internet Protocol (IP)?
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The protocol by which data is sent from one computer to another on the Internet
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To which type of server are you usually transferred when you download software programs and documents from Web sites?
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A File Transfer Protocol (FTP) server
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Each segment of a dotted quad consists of a number between:
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0 and 255.
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How many bits does the Internet Protocol version 6 (IPv6) address format use?
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128
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What protocols can connect an entire network to the Internet?
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Point-to-Point Protocol over Ethernet (PPPoE)
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What server types is responsible solely for sending e-mail messages?
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Simple Mail Transfer Protocol (SMTP) server
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What protocols enables you to browse and manage e-mail messages while they reside on the server?
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Internet Message Access Protocol (IMAP)
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What is the term for the complete domain name of an Internet computer?
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Fully qualified domain name
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What is the term for a server at the highest level of the Domain Name System (DNS)?
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Root-level server
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What is used solely to resolve human-readable domain names into their computer-readable IP addresses?
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Domain name servers
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What services are you using when a third party is hosting your Web site but your company has its own Web address with its own domain name?
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A virtual domain
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What is a common advantage of cloud computing?
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Cost reduction
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Which server type provides text output that users can access at their convenience and also allows multi-person input?
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News server
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In an IP address such as 72.44.192.233, the last number in the address (on the far right) identifies:
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a specific computer
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What protocols is used to transfer Web pages from a Web server to a Web client?
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Hypertext Transfer Protocol (HTTP)
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What protocols is used to transfer files between two computers on the Internet?
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File Transfer Protocol (FTP)
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What function does the Domain Name System (DNS) perform?
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It resolves IP addresses into easily recognizable text-based names.
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What top-level domains would generally refer to an Internet Service Provider (ISP)?
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Net
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What services allows multiple companies, organizations or people to share portions of the same domain name?
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A shared domain
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To what does the term "cloud" in "cloud computing" refer?
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The network of servers and connections that make up the Internet
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What is an accurate description of cloud computing?
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Hosted applications and services offered by a third party and run almost entirely from one or more servers that reside on the Internet
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What is the name of the problem-solving model in which a task ordinarily performed by one person is outsourced to a large group or community in order to obtain and analyze large amounts of data?
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Crowdsourcing
