Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Computer Information Systems 5620 > Chapter 7: Telecommunications, the Internet, and Wireless Technology > Flashcards

Chapter 7: Telecommunications, the Internet, and Wireless Technology Flashcards

1
Q

3G Networks

A

Cellular networks based on packet-switched technology with speeds ranging from 144 Kbps for mobile users to over 2 Mbps for stationary users, enabling users to transmit video, graphics, and other rich media, in addition to voice.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

4G Networks

A

The next evolution in wireless communication is entirely packet switched and capable of providing between 1 Mbps and 1 Gbps speeds; up to ten times faster than 3G networks. Not widely deployed in 2010.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Bandwidth

A

The capacity of a communications channel as measured by the difference between the highest and lowest frequencies that can be transmitted by that channel.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Blog

A

Popular term for Weblog, designating an informal yet structured Web site where individuals can publish stories, opinions, and links to other Web sites of interest.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Blogosphere

A

Totality of blog-related Web sites.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Bluetooth

A

Standard for wireless personal area networks that can transmit up to 722 Kbps within a 10-meter area.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Broadband

A

High-speed transmission technology. Also designated a single communications medium that can transmit multiple channels of data simultaneously.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Cable Internet Connections

A

Internet connections that use digital cable lines to deliver high-speed Internet access to homes and businesses.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Chat

A

Live, interactive conversations over a public network.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Digital Subscriber Line (DSL)

A

A group of technologies providing high-capacity transmission over existing copper telephone lines.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Domain Name

A

English-like name that corresponds to the unique 32-bit numeric Internet Protocol (IP) address for each computer connected to the Internet.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Domain Name System (DNS)

A

A hierarchical system of servers maintaining a database enabling the conversion of domain names to their numeric IP addresses.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

E-Mail

A

The computer-to-computer exchange of messages.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

File Transfer Protocol (FTP)

A

Tool for retrieving and transferring files from a remote computer.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Hertz

A

Measure of frequency of electrical impulses per second, with 1 Hertz equivalent to 1 cycle per second.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Hotspots

A

A specific geographic location in which an access point provides public Wi-Fi network service.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Hubs

A

Very simple devices that connect network components, sending a packet of data to all other connected devices.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Hypertext Transfer Protocol (HTTP)

A

The communications standard used to transfer pages on the Web. Defines how messages are formatted and transmitted.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Instant Messaging

A

Chat service that allows participants to create their own private chat channels so that a person can be alerted whenever someone on his or her private list is on-line to initiate a chat session with that particular individual.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Internet Protocol (IP) Address

A

Four-part numeric address indicating a unique computer location on the Internet.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Internet Service Provider (ISP)

A

A commercial organization with a permanent connection to the Internet that sells temporary connections to subscribers.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Internet2

A

Research network with new protocols and transmission speeds that provides an infrastructure for supporting high-bandwidth Internet applications.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

IPv6

A

New IP addressing system using 128-bit IP addresses. Stands for Internet Protocol version 6.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Local Area Network (LAN)

A

A telecommunications network that requires its own dedicated channels and that encompasses a limited distance, usually one building or several buildings in close proximity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Metropolitan Area Network (MAN)

A

Network that spans a metropolitan area, usually a city and its major suburbs. Its geographic scope falls between a WAN and a LAN.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Microblogging

A

Blogging featuring very short posts, such as using Twitter.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Modem

A

A device for translating a computer’s digital signals into analog form for transmission over ordinary telephone lines, or for translating analog signals back into digital form for reception by a computer.

28
Q

Network Operating System (NOS)

A

Special software that routes and manages communications on the network and coordinates network resources.

29
Q

Packet Switching

A

Technology that breaks messages into small, fixed bundles of data and routes them in the most economical way through any available communications channel.

30
Q

Peer-to-Peer

A

Network architecture that gives equal power to all computers on the network; used primarily in small networks.

31
Q

Personal Area Networks (PANs)

A

Computer network used for communication among digital devices (including telephones and PDAs) that are close to one person.

32
Q

Protocol

A

A set of rules and procedures that govern transmission between the components in a network.

33
Q

Radio Frequency Identification (RFID)

A

Technology using tiny tags with embedded microchips containing data about an item and its location to transmit short-distance radio signals to special RFID readers that then pass the data onto a computer for processing.

34
Q

Router

A

Specialized communications processor that forwards packets of data from one network to another network.

35
Q

RSS

A

Technology using aggregator software to pull content from Web sites and feed it automatically to subscribers’ computers.

36
Q

Search Engines

A

A tool for locating specific sites or information on the Internet.

37
Q

Search Engine Marketing

A

Use of search engines to deliver in their results sponsored links, for which advertisers have paid.

38
Q

Search Engine Optimization

A

The process of changing a Web site’s content, layout, and format in order to increase the ranking of the site on popular search engines, and to generate more site visitors.

39
Q

Semantic Web

A

Ways of making the Web more ‘intelligent,’ with machine-facilitated understanding of information so that searches can be more intuitive, effective, and executed using intelligent software agents.

40
Q

Shopping Bots

A

Software with varying levels of built-in intelligence to help electronic commerce shoppers locate and evaluate products or service they might wish to purchase.

41
Q

Smartphones

A

Wireless phone with voice, text, and Internet capabilities.

42
Q

Social Networking Sites

A

Online community for expanding users’ business or social contacts by making connections through their mutual business or personal connections.

43
Q

Social Search

A

Effort to provide more relevant and trustworthy search results based on a person’s network of social contacts.

44
Q

Software-Defined Networking

A

Using a central control program separate from network devices to manage the flow of data on a network.

45
Q

Switch

A

Device to connect network components that has more intelligence than a hub and can filter and forward data to a specified destination.

46
Q

T1 Lines

A

High-speed data lines leased from communications providers, such as T-1 lines (with a transmission capacity of 1.544 Mbps).

47
Q

Telnet

A

Network tool that allows someone to log on to one computer system while doing work on another.

48
Q

Transmission Control Protocol/Internet Protocol (TCP/IP)

A

Dominant model for achieving connectivity among different networks. Provides a universally agree-on method for breaking up digital messages into packets, routing them to the proper addresses, and then reassembling them into coherent messages.

49
Q

Unified Communications

A

Integrates disparate channels for voice communications, data communications, instant messaging, e-mail, and electronic conferencing into a single experience where users can seamlessly switch back and forth between different communication modes.

50
Q

Uniform Resource Locator (URL)

A

The address of a specific resource on the Internet.

51
Q

Virtual Private Network (VPN)

A

A secure connection between two points across the Internet to transmit corporate data. Provides a low-cost alternative to a private network.

52
Q

Voice Over IP (VoIP)

A

Facilities for managing the delivery of voice information using the Internet Protocol (IP).

53
Q

Web 2.0

A

Second-generation, interactive Internet-based services that enable people to collaborate, share information, and create new services online, including mashups, blogs, RSS, and wikis.

54
Q

Web 3.0

A

Future vision of the Web where all digital information to woven together with intelligent search capabilities.

55
Q

Web Site

A

All of the World Wide Web pages maintained by an organization or an individual.

56
Q

Wide Area Networks (WANs)

A

Telecommunications network that spans a large geographical distance. May consist of a variety of cable, satellite, and microwave technologies.

57
Q

Wi-Fi

A

Standards for Wireless Fidelity and refers to the 802.11 family of wireless networking standards.

58
Q

Wiki

A

Collaborative Web site where visitors can add, delete, or modify content, including the work of previous authors.

59
Q

WiMax

A

Popular term for IEEE Standard 802.16 for wireless networking over a range of up to 31 miles with a data transfer rate of up to 75 Mbps. Stands for Worldwide Interoperability for Microwave Access.

60
Q

Wireless Sensor Networks (WSNs)

A

Networks of interconnected wireless devices with built-in processing, storage, and radio frequency sensors and antennas that are embedded into the physical environment to provide measurements of many points over large spaces.

61
Q

What are the principal components of telecommunications networks and key networking technologies?

A

A simple network consists of two or more connected computers. Basic network components include computers, network interfaces, a connection medium, network operating system software, and either a hub or a switch. The networking infrastructure for a large company includes the traditional telephone system, mobile cellular communication, wireless local area networks, videoconferencing systems, a corporate Web site, intranets, extranets, and an array of local and wide area networks, including the Internet.
Contemporary networks have been shaped by the rise of client/server computing, the use of packet switching, and the adoption of Transmission Control Protocol/Internet Protocol (TCP/IP) as a universal communications standard for linking disparate networks and computers, including the Internet. Protocols provide a common set of rules that enable communication among diverse components in a telecommunications network.

62
Q

What are the different types of networks?

A

The principal physical transmission media are twisted copper telephone wire, coaxial copper cable, fiber-optic cable, and wireless transmission.
Local area networks (LANs) connect PCs and other digital devices together within a 500-meter radius and are used today for many corporate computing tasks. Wide area networks (WANs) span broad geographical distances, ragning from several miles to continents, and are private networks that are independently managed. Metropolitan are networks (MANs) span a single urban area.
Digital subscriber line (DSL) technologies, cable Internet connections, and T1 lines are often used for high-capacity Internet connections.

63
Q

How do the Internet and Internet technology work, and how do they support communication and e-business?

A

The Internet is a worldwide network of networks that uses the client/server model of computing and the TCP/IP network reference model. Every computer on the Internet is assigned a unique numeric IP address. The Domain Name System (DNS) converts IP addresses to more user-friendly domain names. Worldwide Internet policies are established by organizations and government bodies, such as the Internet Architecture Board (IAB) and the World Wide Web Consortium (W3C).
Major Internet services include e-mail, newsgroups, chatting, instant messaging, Telnet, FTP, and the Web. Web pages are based on Hyptertext Markup Language (HTML) and can display text, graphics, video, and audio. Web site directories, search engines, and RSS technology help users locate the information they need on the Web. RSS, blogs, social networking, and wikis are features of Web 2.0.
Firms are also starting to realize economies by using VoIP technology for voice transmission and by using virtual private networks (VPNs) as low-cost alternatives to private WANs.

64
Q

What are the principal technologies and standards for wireless networking, communication, and Internet access?

A

Cellular networks are evolving toward high-speed, high-bandwidth, digital packet-switched transmission. Broadband 3G networks are capable of transmitting data at speeds ranging from 144 Kbps to more than 2 Mbps. 4G networks capable of transmission speeds that could reach 1 Gbps are starting to be rolled out.
Major cellular standards include Code Division Multiple Access (CDMA), which is used primarily in the United States, and Global System for Mobile Communications (GSM), which is the standard in Europe and much of the rest of the world.
Standards for wireless computer networks include Bluetooth (802.15) for small personal area networks (PANs), Wi-Fi (802.11) for local area networks (LANs), and WiMax (802.16) for metropolitan area networks (MANs)

65
Q

Why are radio frequency identification (RFID) and wireless sensor networks valuable for business?

A

Radio frequency identification (RFID) systems provide a powerful technology for tracking the movement of goods by using tiny tags with embedded data about an item and its location. RFID readers read the radio signals transmitted by these tags and pass the data over a network to a computer for processing. Wireless sensor networks (WSNs) are networks of interconnected wireless sensing and transmitting devices that are embedded into the physical environment to provide measurements of many points over large spaces.

Computer Information Systems 5620 (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions