[COMPLETE] CIW Lesson 3
LAN
(Local Area Network) A computer network that interconnects computers in a limited area such as home, school, or an office.
WAN
(Wide Area Network) A computer network in which the computers connected may be far apart, generally having a radius of half a mile or more.
Client
(in a network) A desktop computer or workstation that is capable of obtaining information and applications from a server.
Electronic Mail Protocol
...
Each segment of a dotted quad consists of a number between:
0 and 255
How many bits does the Internet Protocol version 6 (IPv6) address format use?
128
Which device connects a wireless local area network to a wireless phone network at broadband speeds?
4G mobile hotspot
To which type of server are you usually transferred when you download software programs and documents from Web sites?
A File Transfer Protocol (FTP) server
Packets
A block of data transmitted across a network.
Modem
A combined device for modulation and demodulation.
Network Interface Card
A computer hardware connecting it to a computer network.
Internet
A computer network consisting of a WorldWide network of computer networks that use TCP/IP network protocols to facilitate data transmissions.
Server
A computer or program that manages access to a certified resource or service in a network.
Point to point protocol
A data link protocol commonly used in establishing a direct connection between two networking nodes.
Router
A device that forwards data packets to the appropriate parts of a computer network.
Gateways
A device to connect two different networks, esp, a connection to the internet.
Digital Subscriber Line (DSL)
A family of technologies that provide internet access by transmitting digital data over wires.
xDSL
A family of technologies that provide internet access by transmitting digital data over wires.
What is a local area network (LAN)?
A group of computers connected within a confined geographic area
In computer terminology, what is a network?
A group of two or more computers connected so they can communicate, share resources and exchange information with one another
Backbones
A high speed, high capacity digital connection which forms the axis of a local or wide area network.
Web Page
A hypertext document on the world wide web.
Web Site
A location connected to the internet that maintains one or more web pages on the world wide web.
Network
A number of interconnected computers, machines, or operations.
Nodes
A piece of equipment such as a PC or peripheral, attached to a network.
Web Browsers
A program used to view HTML documents.
Internet Protocol
A set of rules governing the format of data sent over the internet or other network.
What is the World Wide Web?
A set of software programs that enables users to access resources on the Internet via hypertext documents
Which of the following services allows multiple companies, organizations or people to share portions of the same domain name?
A shared domain
Point to point protocol over ethernet
A specification for connecting users on an ethernet to the internet through a common broadband medium.
File Transfer Protocol
A standard network protocol used to transfer files from one host to another over a TCP based network.
Which of the following 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?
A virtual domain
Hypertext Links
A way to embed a URL into an object (such as text or an image) so that when the object is clicked, the browser retrieves the file specified.
Wireless access point (AP)
A wireless device allowing wireless devices to connect to a wired network using wi-fi.
What is the Internet?
A worldwide network of interconnected networks
Internet Assigned Numbers Authority (IANA)
An American corporation who oversees global IP address allocation, Autonomous system number allocation, root zone management in domain name system, and other Internet protocol related things.
National Science Foundation
An independent agency of the federal government responsible for the promotion of progress in science and engineering.
World Wide Web
An information system on the internet that allows documents to be connected to other documents by hypertext links, enabling the user to search information by moving one document to another.
Integrated Service Digital Network (ISDN)
An international communication standard for sending voice data, video, and data over digital telephone lines.
What happens when you click a hypertext link?
Another location in the same Web page or another Web page appears.
How are wide area networks (WANs) created?
By connecting LANs to one another via public carriers
Which of the following elements required to connect to the Internet are generally acquired when you buy a computer?
Computer, operating system and TCP/IP
Which of the following is a common advantage of cloud computing?
Cost reduction
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?
Crowdsourcing
Which of the following statements is true about Digital Subscriber Line (DSL)?
DSL is similar to Integrated Services Digital Network (ISDN) lines, but DSL is much faster.
What are E carriers?
Dedicated digital telephone lines used in Europe
What are T carriers?
Dedicated digital telephone lines used in North America
What are fractional T and E lines?
Digital phone lines consisting of one or more individual T or E carrier channels, rather than the entire T or E carrier line
Which of the following is used solely to resolve human-readable domain names into their computer-readable IP addresses?
Domain name servers
Why might a Web page appear differently in different browsers?
Each browser interprets HTML somewhat differently.
Which of the following connection types provides the fastest direct connection speed?
Fiber-optic cable
Which of the following protocols is used to transfer files between two computers on the Internet?
File Transfer Protocol (FTP)
What is the term for the complete domain name of an Internet computer?
Fully qualified domain name
Which of the following is an accurate description of cloud computing?
Hosted applications and services offered by a third party and run almost entirely from one or more servers that reside on the Internet
Which of the following protocols is used to transfer Web pages from a Web server to a Web client?
Hypertext Transfer Protocol (HTTP)
Which of the following wireless mode types uses a centralized access point known as a wireless access point (AP)?
Infrastructure
Which of the following dial-up connection types has been largely superseded by direct Internet connections?
Integrated Services Digital Network (ISDN)
Which of the following protocols enables you to browse and manage e-mail messages while they reside on the server?
Internet Message Access Protocol (IMAP)
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?
Internet Service Provider (ISP)
In the client/server environment, what is the main function of client software?
It enables users to communicate with and request information from the server.
What function does the Domain Name System (DNS) perform?
It resolves IP addresses into easily recognizable text-based names.
What is the term for a device that converts digital data from a computer into analog signals and back again?
Modem
Which server type provides text output that users can access at their convenience and also allows multi-person input?
News server
What is the term for individual computers and devices that are connected to a network?
Nodes
Internet Service Provider (ISP)
Organization that offers user access to internet and related services.
Which of the following protocols can connect an entire network to the Internet?
Point-to-Point Protocol over Ethernet (PPPoE)
Which of the following enabled private (i.e., commercial) business to be conducted over networks connected to NSFnet?
Private telecommunications companies
Hypertext Transfer Protocol
Protocol using TCP to transfer hypertext requests and information between servers and browsers.
Hexadecimal
Relating to or using a system of numerical notation that has 16 rather than 10 as its base.
What is the term for a server at the highest level of the Domain Name System (DNS)?
Root-level server
What is the term for a device that determines the best path for data to take across a network?
Router
Which of the following server types is responsible solely for sending e-mail messages?
Simple Mail Transfer Protocol (SMTP) server
4th generation (4G)
The 4th generation of mobile phone mobile communication technology standards.
In 1969, which U.S. Department of Defense agency funded what would become the first global computer network?
The Advanced Research Projects Agency (ARPA)
ARPANET
The Advanced Research Projects Agency Network was one of the worlds first operational packet switching networks.
Transmission Protocol/Internet Protocol (TCP/IP)
The basic communication language or protocol of the internet.
Standard
The level of quality
To what does the term "cloud" in "cloud computing" refer?
The network of servers and connections that make up the Internet
What is Internet Protocol (IP)?
The protocol by which data is sent from one computer to another on the Internet
Bandwith
The range of frequencies with a given band, in particular that is used for transmitting a signal.
What is a top-level domain in the Domain Name System (DNS)?
The right-side component of a domain name, which categorizes domains into groups by common type or geography
What is the primary function of a network server?
To act as a central repository of programs and data to which all users connected to the network have access
For what purpose would you use a cable modem?
To connect to the Internet through your cable television system
What is the main purpose of a file server?
To store shared data
ARPA
Top level domain in the domain name system of the internet. It is used exclusively for technical infrastructure purposes.
What enables dissimilar systems connected to the Internet to communicate with one another?
Transmission Control Protocol/Internet Protocol (TCP/IP)
Which of the following is responsible for ensuring that data packets are transferred quickly and reliably across a network?
Transmission Control Protocol/Internet Protocol (TCP/IP)
A LAN can be connected to the Internet by a router, provided that the LAN uses:
Transmission Control Protocol/Internet Protocol (TCP/IP).
What is a wide area network (WAN)?
Two or more local area networks (LANs) that span a wide geographic area
Simple Mail Transfer Protocol (SMTP)
Used to transfer email messages to others with an outgoing mail server.
4G hotspot
Uses mobile broadband services from cellular devices.
What is the term for a software application that enables users to access and view Web pages on the Internet?
Web browser
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?
Web page
What is the term for a collection of related HTML documents located on a host computer on the Internet?
Web site
A wireless access point (AP) is:
a device that enables wireless systems to communicate with each other, provided that they are on the same network.
In an IP address such as 72.44.192.233, the last number in the address (on the far right) identifies:
a specific computer.
Which of the following top-level domains would generally refer to an Internet Service Provider (ISP)?
net
Direct Internet connections:
provide continuous access to the Internet through permanent network connections.
In the client/server model:
the server is responsible for storing and providing information.
The 802.11 standard, which was developed by the Institute of Electrical and Electronics Engineers (IEEE), refers to a family of specifications for:
wireless network technology.
