17. Givedefinitionto e-learning

UnderstandingeLearningissimple. eLearningislearningutilizingelectronictechnologiestoaccesseducationalcurriculumoutsideof a traditionalclassroom. Inmostcases, itrefersto a course, programordegreedeliveredcompletelyonline.

Therearemanytermsusedtodescribelearningthatisdeliveredonline, viatheinternet, rangingfromDistanceEducation, tocomputerizedelectroniclearning, onlinelearning, internetlearningandmanyothers.

Wedefine eLearningascoursesthatarespecificallydeliveredviatheinternettosomewhereotherthantheclassroomwheretheprofessoristeaching. Itisnot a coursedeliveredvia a DVD or CD-ROM, videotapeorover a televisionchannel. Itisinteractiveinthatyoucanalsocommunicatewithyourteachers, professorsorotherstudentsinyourclass. Sometimesitisdeliveredlive, whereyoucan “electronically” raiseyourhandandinteractinrealtimeandsometimesitis a lecturethathasbeenprerecorded.

18. Describe a freesoftware

Freeware is software that is free to use. Unlike commercial software, it does not require any payment or licensing fee. It is similar to shareware, but will not eventually ask you for payment to continue using the software. You can legally download and use freeware for as long as you want without having to pay for it.

Many types of software programs are offered as freeware, including games, utilities, and productivity applications. Since the software is free, you might wonder what incentive developers have to create freeware programs. Below are a few reasons a program might be offered as freeware:

To offer a program developed by a non-profit or educational institution to the public

To promote a brand or drive traffic to a company's website

To generate revenue through advertisements or in-app purchases within the program

To generate revenue by offering other programs during the installation process

To provide a "lite" version of a program that may lead users to upgrade to the full-featured version

While freeware is free to use, it is still copyrighted and may include a license agreement that restricts usage or distribution of the software. It is also not the same thing as open source software (or "free software"), which allows you to edit and redistribute the program's source code.

19. Givedefinitionto Maintermsof mobiletechnologies

Inthecomputerworld, theterm mobiledevice referstoanyelectronicdevicethatbeeasilymovedfromonelocationtoanother. Overtime, thiscategoryhasexpandedtoinclude cellphones, laptops, smartphones, smartwatches, andotherportabledevices. Thepictureshowsanexampleofoneofthemostcommonmobiledevicestoday: the tabletcomputer.

Mobiledevicehistory.

Laptopsbecameoneofthefirst mobile computingdevicesbyeliminatingthewiresbetweenthecomputerandits peripherals; thenintegratingthemintooneunit.Today, mobiledeviceusuallyreferstoanyhand-heldcomputercapableofrunning applications thatcanconnecttothe Internet wirelessly. However, evenbytoday'smorescrupulousstandards, thecategorykeepsexpandingwithnewinventions. Asistrueinanybranchofcomputing, ourmobiledevicescontinuetooffermoreadvancedfunctionswhilereducingsizeandweight.

Mobile technology is the technology used for cellular communication. Mobile code division multiple access (CDMA) technology has evolved rapidly over the past few years. Since the start of this millennium, a standard mobile device has gone from being no more than a simple two-way pager to being a mobile phone, GPS navigation device, an embedded web browser and instant messaging client, and a handheld game console. Many experts argue that the future of computer technology rests in mobile computing with wireless networking. Mobile computing by way of tablet computers are becoming more popular. Tablets are available on the 3G and 4G networks.

20) Give definition to Cybersecurity. Computer security is the protection of computing systems and the data that they store or access.

Computersecurity,alsoknownascybersecurityorIT security, istheprotectionofcomputersystems fromtheftordamagetothehardware,softwareorthe information onthem, aswellasfrom disruption or misdirection oftheservicestheyprovide.

Ourdailylife, economicvitality, andnationalsecuritydependon a stable, safe, andresilientcyberspace.

Why do need to learn about Computer Security? Isn’t this just IT problem? Information is stored on computer hardware, manipulated by software, transmitted by communication, used by people, etc. each of these areas must be adequately protected!

“In the last 20 years, technology has permeated every facet ofthe business environment.The business place is no longer static– it moves whenever employees travel from office to office, fromoffice to home, from city to city. Since business have becomemore fluid, …, information security is no longer the soleresponsibility of a small dedicated group of professionals, …, it isnow the responsibility of every employee, especially managers.”

Information security should balance protection & access -a completely secure information system would not allowanyone access, orwould be very‘user-unfriendly’!