View stunning SlideShares in full-screen with the new iOS app!Introducing SlideShare for AndroidExplore all your favorite topics in the SlideShare appGet the SlideShare app to Save for Later — even offline
View stunning SlideShares in full-screen with the new Android app!View stunning SlideShares in full-screen with the new iOS app!
SEKOLAH MENENGAH KEBANGSAAN DATO’ PENGGAWA TIMURLA3.S07.1 Describe the Latest Development in Network andCommunicationName: Muhamad Airil Bin MoksinI/C No : 961020016759Class: 4 DelimaTeacher’s Name: Mohd Firdaus Bin Mohd Dani
1.0 INTRODUCTION1.1 Definition of NetworkA computer network , or simply a network , is a collection of computers and other hardwareinterconnected by communication channels that allows sharing of resources and information.Where at least one process in one device is able to send/receive data to/from at least oneprocess residing in a remote device, then the two devices are said to be in a network. Simplymore than one computer interconnected through a communication medium for informationinterchange is called a computer network.Networks mat be classified according to a widevariety of characteristics,such as the medium used to transport the data.1.2 Definition of CommunicationCommunication is the activity of conveying information through the exchange of thoughts,messages, or information, as by speech, visuals, signals, writing, or behavior. Communicationrequires a sender, a message, and a recipient, although the receiver doesnt have to be presentor aware of the senders intent to communicate at the time of communication; thuscommunication can occur across vast distances in time and space. Communication requiresthat the communicating parties share an area of communicative commonality. Thecommunication process is complete once the receiver has understood the message of thesender.1.3 Definition Of Computer Communication NetworkComputer Communication Network is to allow moving information from one point toanother inside the network. The information could be stored on a device, such a personalcomputer in the network, it could be generated live outside network , such as speed or couldbe generated by a processon another piece of information , such as aotumatic salestransactions at the end of a business day .The computer network has evolved into a highlycomplex system.
2.0 MOBILE COMPUTING2.1 DefinitionMobile computing is human–computer interaction by which a computer is expected to betransported during normal usage. Mobile computing involves mobile communication, mobilehardware, and mobile software. Communication issues include ad-hoc and infrastructurenetworks as well as communication properties,protocols, data formats and concretetechnologies. Hardware includes mobile devices or device components. Mobilesoftware deals with the characteristics and requirements of mobile applications2.2 Specification, services & frequencies of Mobile Computing.SpecificationsThe Samsung Galaxy Note II has a feature of 1.6 GHz quad-coreprocessor, 720p resolution display, 2 GB of RAM, and storage capacity up to 128 GB —when using a 64 GB microSD card with the projected 64 GB model.System chip: Samsung Exynos 4412 Quad – It includes a quad-core processor based on theCortex-A9 architecthure including NEON SIMD extension, which clocks with 1.4 ti 1.6 GHzdepending on the model.Processor: Quad core, 1600 MHz ,ARM Cortex-A9 – has NEON SIMD instruction setextension performing up to 16 operations per instructions.Graphic Processor : ARM Mali -400 MP4 – conformant multi-core GPU provides 2D and3D acceleration with performance scalable up to 1080p resolutions.
System memory: 2048 MB RAMBuilt-in storage: 16GBStorage expansion: microSD ,microSDHC, micro SDXC up to 64GB.ServicesSystem chip : Can get WiFi, 3G,4G, surfing the internet,social networking and playinggames online.FrequenciesWiFi : 802.11 a/b/g/n (2.4 & 5 GHz),WiFi HT40- These standards provide the basis forwireless network products using the WiFi Brand.3.0 INTERNET TECHNOLOGY AND SERVICES3.1 Voice Over Internet Protocol ( VoIP)Voice over Internet Protocol (VoIP) is a general term for a family of transmissiontechnologies for delivery of voice communications over IP networks such as the Internet orother packet-switched networks. Other terms frequently encountered and synonymous withVoIP are IP telephony, Internet telephony, voice over broadband (VoBB), broadbandtelephony, and broadband phone.
3.2 BlogA blog (a contraction of the term weblog) is a type of website, usually maintained by anindividual with regular entries of commentary, descriptions of events, or other material suchas graphics or video. Entries are commonly displayed in reverse-chronological order. "Blog"can also be used as a verb, meaning to maintain or add content to a blog.4.0 Types Of Network4.1 Personal Area Networking (PAN)A personal area network (PAN) is a computer network used for communication amongcomputer devices (including telephones and personal digital assistants) close to one person.The devices may or may not belong to the person in question. The reach of a PAN is typicallya few meters. PANs can be used for communication among the personal devices themselves(intrapersonal communication), or for connecting to a higher level network and the Internet(an uplink). Personal area networks may be wired with computer buses such as USB andFireWire. A wireless personal area network (WPAN) can also be made possible with networktechnologies such as IrDA, Bluetooth, UWB, Z-Wave and ZigBee.
4.2 Virtual Private Network (VPN)A virtual private network (VPN) extends a private network across a public network, suchas the Internet. It enables a computer to send and receive data across shared or publicnetworks as if it were directly connected to the private network, while benefitting from thefunctionality, security and management policies of the private network.This is done byestablishing a virtual point-to-pointconnection through the use of dedicated connections,encryption, or a combination of the two.4.2 Wireless LAN (WLAN)A wireless LAN (WLAN) is a wireless local area network that links two or more computersor devices using spread-spectrum or OFDM modulation technology based to enablecommunication between devices in a limited area. This gives users the mobility to movearound within a broad coverage area and still be connected to the network
4.3 WIMAXWorldwide Interoperability for Microwave Access (WiMAX) is a communicationstechnology thatuses radio spectrum to transmit tens of megabits per second in bandwidthbetween digital devices such as laptop computers. Similar to WiFi, WiMAX brings with it theability to transmit over far greater distances and to handle much more data.5.0 ConclusionWe can conclude that computer networks have highly benefited various field of educationalsectors, bussines world and many organizations. They can be seen everywhere they connectpeople over the world. These are some major advantages which compute networks hasprovided making the human life more relaxed and easy.
6.0 References1. ICT Note Book Form 42. Internet : http://www.pcmag.com/encyclopedia_term/0,2542,t=mobile+computing&i=47137,00asp http://answers.yahoo.com/question/index?qid=20070629052817AASZjbY http://en.wikipedia.org/wiki/Voice_over_Internet_Protocol http://en.wikipedia.org/wiki/Blog http://compnetworking.about.com/od/basicnetworkingconcepts/a/network_types.htm http://en.wikipedia.org/wiki/Personal_Area_Network http://en.wikipedia.org/wiki/Wireless_LAN http://www.mariosalexandrou.com/definition/wimax.asp