Deck 7: Networks: Mobile Business

Question 1

The packet footer represents the end of the packet or transmission end.The packet header and packet footer contain error-checking information to ensure the entire message is sent and received.The receiving device reassembles the individual packets into the original by stripping off the headers and footers and then piecing together the packets in the correct sequence.

Answer 1

True
Explanation: The packet footer represents the end of the packet or transmission end.The packet header and packet footer contain error-checking information to ensure the entire message is sent and received.The receiving device reassembles the individual packets into the original by stripping off the headers and footers and then piecing together the packets in the correct sequence.

Question 2

A local area network (LAN)connects a group of computers in close proximity,such as in an office building,school,or home.LANs allow sharing of files,printers,games,and other resources.A LAN also often connects to other LANs,and to wide area networks.

Answer 2

True
Explanation: A local area network (LAN)connects a group of computers in close proximity,such as in an office building,school,or home.LANs allow sharing of files,printers,games,and other resources.A LAN also often connects to other LANs,and to wide area networks.

Question 3

Traceroute formats include a packet header,packet body containing the original message,and packet footer.

Answer 3

False
Explanation: Standard packet formats include a packet header,packet body containing the original message,and packet footer.

Question 4

A domain name system (DNS)converts IP addresses into domains,or identifying labels that use a variety of recognizable naming conventions.

Question 5

The packet header lists the destination (for example in IP packets the destination is the IP address)along with the length of the message data.

Question 6

Attenuation is a single unit of binary data routed through a network.

Question 7

IP address is a unique number that identifies where computers are located on the network.

Question 8

Dynamic Host Configuration Protocol (DHCP)allows dynamic IP address allocation so users do not have to have a preconfigured IP address to use the network.

Question 9

Packets directly impact network performance and reliability by subdividing an electronic message into smaller more manageable packets.

Question 10

A local area network (LAN)spans a large geographic area such as a state,province,or country.

Question 11

Dynamic host configuration protocol is a utility application that monitors the network path of packet data sent to a remote computer.

Question 12

A wide area network (WAN)spans a large geographic area such as a state,province,or country.Perhaps the best example is the Internet.

Question 13

Network convergence is the integration of communication channels into a single service.

Question 14

A repeater represents the loss of a network signal strength measured in decibels (dB)and occurs because the transmissions gradually dissipate in strength over longer distances or radio interference or physical obstructions like walls also impact communication signals.

Question 15

A metropolitan area network (MAN)is a large computer network usually spanning a city.

Question 16

Telecommuting (virtual workforce)allows users to work from remote locations such as home or hotel using high-speed Internet to access business applications and data.

Question 17

A repeater receives and repeats a signal extending its attenuation or range.

Question 18

IP address is a simple network protocol that allows the transfer of files between two computers on the Internet.

Question 19

National service providers (NSPs),private companies that own and maintain the worldwide backbone that supports the Internet.These include Sprint,Verizon,MCI (previously UUNet/WorldCom),AT&T,NTT,Level3,Century Link,and Cable & Wireless Worldwide.

Question 20

Broadband over power line (BPL)technology makes possible high-speed Internet access over ordinary residential electrical lines and offers an alternative to DSL or high-speed cable modems.

Question 21

RFID innovations and technologies are being used in many industries including retail,hospitals,pharmaceuticals,and ranchers.

Question 22

The three main benefits of networks or a connected world include sharing resources,providing opportunities,and reducing travel.

Question 23

Passive RFID tags have their own transmitter and a power source (typically a battery).

Question 24

A proxy is software that prevents direct communication between a sending and receiving computer and is used to monitor packets for security reasons.

Question 25

Worldwide Interoperability for Microwave Access (WiMAX)is a communications technology aimed at providing high-speed wireless data over metropolitan area networks.

Question 26

Two methods for encrypting network traffic on the Web are secure sockets layer and secure hypertext transfer protocol.

Question 27

A wireless LAN (WLAN)is a means by which portable devices can connect wirelessly to a local area network,using access points that send and receive data via radio waves.

Question 28

The main challenges facing networks include security,social,ethical and political issues.

Question 29

Some of the social challenges with networking occur with newsgroups or blogs where like-minded people can exchange messages.Problems can arise when sensitive social issues become the topic of discussion such as politics or religion.

Question 30

A great GIS example,Google earth,combines satellite imagery,geographic data,and Google's search capabilities to create a virtual globe that users can download to a computer or mobile device.

Question 31

A global positioning system (GPS)consists of hardware,software,and data that provide location information for display on a multidimensional map.

Question 32

Wireless networking includes personal area networks (PAN)that provide communication over a short distance that is intended for use with devices that are owned and operated by a single user.

Question 33

Radio-frequency identification (RFID)uses electronic tags and labels to identify objects wirelessly over short distances.

Question 34

VPNs are often used to connect to a corporate server.VPN stands for a Valued Partner Network.

Question 35

Passive RFID tags do not have a power source.

Question 36

An intranet is a restricted network that relies on Internet technologies to provide an Internet-like environment within the company for information sharing,communications,collaboration,Web publishing,and the support of business processes.

Question 37

The Institute of Electrical and Electronics Engineers (IEEE)is an organization that researches and institutes electrical standards for communication and other technologies.Known officially as IEEE 802.11n (or wireless-N)is the newest standard for wireless networking.Compared with earlier standards like 802.11b,wireless-N offers faster speeds,more flexibility and greater range.

Question 38

Mobile and wireless networks are identical and the terms can be used synonymously.

Question 39

GPS utilizes location-based services (LBS),applications that use location information to provide a service,whereas a GIS does not use LBS applications.

Question 40

Secure sockets layer (SSL)is a combination of HTTP and SSL to provide encryption and secure identification of an Internet server.

Question 41

RFID accelerometer is a device that measures the acceleration (the rate of change of velocity)of an item and is used to track truck speeds or taxi cab speeds.

Question 42

RFID tag is an electronic identification device that is made up of a chip and antenna.

Question 43

RFID reader (RFID interrogator)is a transmitter/receiver that reads the contents of RFID tags in the area.A RFID system is comprised of one or more RFID tags,one or more RFID readers,two or more antennas.

Question 44

Estimated-time-enroute (ETE)is the time remaining before reaching a destination using the present speed and is typically used for navigation applications.

Question 45

Active RFID tags do not depend on a silicon microchip and use plastic or conductive polymers instead of silicon-based microchips allowing them to be washed or exposed to water without damaging the chip.

Question 46

Wireless networks offer many business advantages but can often slow employee productivity and workflow processes.

Question 47

Active RFID tags use a battery to run the microchip's circuitry,but communicate by drawing power from the RFID reader.

Question 48

Automatic vehicle location (AVL)uses GPS tracking to track vehicles.

Question 49

Estimated-time-of-arrival (ETA)is the time of day of an expected arrival at a certain destination and is typically used for navigation applications.

Question 50

Longitude represents a north/south measurement of position.

Question 51

Spatial data (geospatial data or geographic information)identifies the geographic location of features and boundaries on Earth,such as natural or constructed features,oceans,and more.Spatial data can be mapped and is stored as coordinates and topology.A GIS accesses,manipulates,and analyzes spatial data.

Question 52

GIS map automation links business assets to a centralized system where they can be tracked and monitored over time.

Question 53

Cartography is the science and art of making an illustrated map or chart.GIS allows users to interpret,analyze,and visualize data in different ways that reveal patterns and trends in the form of reports,charts,and maps.

Question 54

Asset tracking occurs when a company places active or semi-passive RFID tags on expensive products or assets to gather data on the items location with little or no manual intervention.

Question 55

WiMAX is a coding process that takes a digital map feature and assigns it an attribute that serves as a unique ID (tract number,node number)or classification (soil type,zoning category).GIS professionals are certified in geocoding practices to ensure industry standards are met when classifying spatial data.

Question 56

Geocache is a GPS technology adventure game that posts the longitude and latitude location for an item on the Internet for users to find.GPS users find the geocache and typically sign a guest book or take an item and leave an item for the next adventure players to find.Caches are often placed in locations that are interesting or challenging for people to discover.

Question 57

Geographic information system (GIS)stores,views,and analyzes geographic data creating multidimensional charts or maps.For example,GIS are monitoring global warming by measuring the speed of glaciers melting in Canada,Greenland,and Antarctica.

Question 58

Latitude represents an east/west measurement of position.

Question 59

Traceroute occurs when paper maps are laid edge-to-edge and items that run across maps do not match are reconfigured to match.

Question 60

A geocoin,a round coin-sized object,is uniquely numbered and hidden in geocache.Geocoins can also be shaped to match a theme like the state of Colorado or a birthday party hat.Geocoins are often decorative or commemorative,making them collectible and highly valuable for technology adventures.

Question 61

WLANs that use Wi-Fi have a built-in security mechanism called Wi-Fi Protected Access (WPA),a wireless security protocol to protect Wi-Fi networks.It is an improvement on the original Wi-Fi security standard,Wired Equivalent Privacy (WEP),and provides more sophisticated data encryption and user authentication.

Question 62

WLANs that use Wi-Fi have a built-in security mechanism called Wi-Fi protected access (WPA),a wireless security protocol to protect Wi-Fi networks.

Question 63

War chalking is deliberately searching for Wi-Fi signals while driving by in a vehicle.

Question 64

LBS differ from RFID in that an LBS cannot track and monitor objects such as inventory.

Question 65

LANs,WANs,and MANs all provide users with an accessible and reliable network infrastructure.Which of the below are the most important network differentiating dimensions?

A)Reliability and timing
B)Confidentiality and performance
C)Security and cost
D)Cost and performance

Question 66

One of the main challenges of business mobility is protecting against theft.

Question 67

Which of the following includes the three primary network types?

A)LAN,WAN,SAN
B)LAN,WAN,MAN
C)LAN,SAN,XAN
D)LAN,WAN,XAN

Question 68

Wired equivalent privacy (WEP)is an encryption algorithm designed to protect wireless transmission data.

Question 69

War driving is the practice of tagging pavement with codes displaying where Wi-Fi access is available.The codes for war driving tell other users the kind of access available,the speed of the network,and if the network is secured.

Question 70

What spans a large geographic area such as a state,province,or country,similar to the Internet?

A)Metropolitan area network (MAN)
B)Local area network (LAN)
C)Wide area network (WAN)
D)Secure area network (SAN)

Question 71

Wireless technology offers the opportunity to redesign and often complicates the work flow processes to be faster,yet more expensive,and more time-consuming.

Question 72

What are the five elements that are needed to create a connected world or a network?

A)Categories,programs,alternatives,people,and core philosophy
B)Program,providers,access,mechanics,and teachers
C)Categories,providers,access technologies,protocols,and convergence
D)LAN,WAN,MAN,PAN,and SAN

Question 73

With the power of a wireless network,business professionals can take advantage of mobility allowing them to work from anywhere,at any time,using many different devices.

Question 74

Enhancing mobility is one of the greatest advantages provided by wireless networks.It allows activities that were formerly tied to physical locations to be performed almost anywhere.

Question 75

What enables telecommunications or the exchange of information (voice,text,data,audio,and video)?

A)Computer networks
B)Email
C)HTML
D)Technology sourcing

Question 76

What is a large computer network usually spanning a city or a specific infrastructure like a college known as?

A)Metropolitan area network (MAN)
B)Local area network (LAN)
C)Wide area network (WAN)
D)Secure area network (SAN)

Question 77

What connects a group of computers in close proximity,such as in a school or office setting?

A)Metropolitan area network (MAN)
B)Local area network (LAN)
C)Wide area network (WAN)
D)Secure area network (SAN)

Question 78

Instant access to customer profiles,account history,and current order status significantly improves the quality of interactions with customers,suppliers,and business partners.

Question 79

What services do telecommunications offer?

A)Telephone and cellular services
B)Cable and satellite services
C)Internet services
D)All of the above

Question 80

What is the largest and most important network that has evolved into a global information superhighway?

A)Internet
B)Intranet
C)Extranet
D)LAN