T209 Tma1 Yaseen

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TMA1 of T209 Arab Open University


  • 1. Yaseen Alhashim, Dammam | TMA01, T209 | Tutor: Mr. Raed Alshaikh Arab Open University Semester/Year: Fall 2008-2009 Branch: Dammam Course Code: Faculty of Computer StudiesTMA No : 01Student to Complete:NameYaseen AlhashimTutors Name Mr. Raed Alshaikh ID Section60812001Total grade Tutor to Complete:Date from Student Date to Student Questions & CommentsMarks Max Awarded Question 1: Part 1: Comments 1: Part 2: Comments 2: Part 3: Comments 3: Total Page 1 of 23

2. Yaseen Alhashim, Dammam | TMA01, T209 | Tutor: Mr. Raed AlshaikhQuestions & CommentsMarksMaxAwarded Question 2: Part 1: Comments 1: Part 2: Comments 2: Total Questions & CommentsMarksMaxAwarded Question : Part 1: Comments 1: Part 2:1.5 Comments 2: Part 3:1.5 Comments 3: Total 5 Questions & CommentsMarksMaxAwarded Question 4: Part 1: Comments 1: Part 2: 2 Comments 2: Part 3: 1 Comments 3:Page 2 of 23 3. Yaseen Alhashim, Dammam | TMA01, T209 | Tutor: Mr. Raed Alshaikh Total5Questions & CommentsMarks MaxAwarded Question 5: Part 1:7 Comments 1: Part 2:15 Comments 2: Part 3:8 Comments 3: Total30Questions & CommentsMarks MaxAwarded Question 6: Part 1:11 Comments 1: Part 2:9 Comments 2: Total20 Overall Comments:Strengths Weaknesses Needed ActionsPage 3 of 23 4. Yaseen Alhashim, Dammam | TMA01, T209 | Tutor: Mr. Raed AlshaikhNote to the Student: Please take the necessary remedial actions recommended by your Tutor and resubmit. Answer to Question No. 1 Introduction Our project is to extent the wired network at Science Museum with wireless network in order to offer new services for its visitors and instead of having a guide for each group visiting the museum.Overview of technology It is useful to go with quick overview about network terms and technologies, before we go with details. We will explain below network, technology terms; Network Wireless Communications, WLAN the type of Wi-Fi Bluetooth PDA Cellular Wireless 2G, 3G and 4GNetwork Network (computer science), a system used to link two or more computers. Network users are able to share files, printers, and other resources; send electronic messages; and run programs on other computers. A network has three layers of components: application software, network software, and network hardware. (1)Wireless Communications Wireless Communications is various telecommunications systems that use radio waves to carry signals and messages across distances. Wireless communications systems include cellular telephones, pagers, radio telegraphs, satellite telephones, laptop computers, personal digital assistants (PDAs), shortwave radios, and two-way radios. They are used primarily to transmit private communications. (2) Moreover, WLAN is abbreviation of Wireless Local Area Network. (3)Wi-Fi (IEEE 802.11) Types Wi-Fi, an abbreviation for Wireless Fidelity, is a wireless communication technology that can provide connections between portable computers and wired connections to the Internet. (4) Page 4 of 23 5. Yaseen Alhashim, Dammam | TMA01, T209 | Tutor: Mr. Raed Alshaikh 802.11a: This uses OFDM, operates in the 5 GHz range, and has a maximumdata rate of 54 Mbps. 802.11b: Operates in the 2.4 GHz range, has a maximum data rate of 11 Mbpsand uses DSSS. 802.11b is the original Wi-Fi standard 802.11g: Operates in the 2.4 GHz range, uses OFDM and has a maximum datarate of 54 Mbps. This is backwards compatible with 802.11b. (5)Bluetooth Bluetooth is an industrial specification for wireless personal area networks (PANs), also known as IEEE 802.15.1. Bluetooth provides a way to connect and exchange information between devices like personal digital assistants (PDAs), mobile phones, laptops, PCs, printers, digital cameras, etc. (6) Bluetooth wireless technology: is a wireless communication link, operatingin the unlicensed ISM band at 2.4 GHz using a frequency hopping transceiver. Itallows real-time AV and data communications between Bluetooth enabledhosts. The link protocol is based on time slots. (7) Bluetooth Enabled Device: is a device that is capable of short-range wirelesscommunications using the Bluetooth system. (8) (9) Figure 1: Wireless TechnologiesPDAPage 5 of 23 6. Yaseen Alhashim, Dammam | TMA01, T209 | Tutor: Mr. Raed AlshaikhPersonal Digital Assistant (PDA), hand-held computer that helps with such tasks as taking notes, scheduling appointments, and sending faxes and electronic mail. PDAs are also called Personal Communicators and Personal Intelligent Communicators. (10)Cellular wireless 2.5G The move from GSM, which is a second-generation (2G) mobile telephone system, to the third-generation (3G) mobile telephone system is being anticipated by some enhancements to the second-generation system. These enhancements are sometimes known as 2.5G, which indicates their intermediate status. (11) 3G The goal of third generation (3G) mobile communication systems is the delivery of multimedia services to the user in the mobile domain. (12) 4G The 4G technology which is at its infancy is supposed to allow data transfer up to 100Mbps outdoor and 1Gbps indoor. NTT Docomo is planning to launch 4G services in Japan around 2010-2015. (13)Comparison of Cellular wireless (14) 2.5G3G4G Speech and limited data Speech and extensiveAllow data transfer up to capabilities (SMS etc)data capabilities (MMS, 100Mbps outdoor and graphical browsing, video 1Gbps indoor. Will able to etc)support Interactive services like Video Conferencing TDMACDMACDMA GPRS Wireless system providing Internet access: a system that provides immediate and continuous access to the Internet from wireless devices such as cell phones. (15)Intranet Computer network within organization; a network of computers, especially one using World Wide Web conventions, accessible only to authorized users such as those within a company. (16)With intranet, all employees within same organization might share information, news, innovation, new projects, etc. with each other and they will view it via web browser (i.e.: Internet Explorer, Firefox). Page 6 of 23 7. Yaseen Alhashim, Dammam | TMA01, T209 | Tutor: Mr. Raed Alshaikh Advantages and disadvantages of WLAN and Bluetooth Next table shows some of advantages and disadvantages of Wireless LAN and Bluetooth based on (Mobility, connectivity, cost and security). TechnologyAdvantagesDisadvantages Mobility: visitors can access Security: required high the network without cablessecurities to preventWireless Local Area Network or wires in place of wireless unauthorized people range.access/hack the connection. Connectivity: VisitorsConnectivity: If there is whoever have wireless problem with wireless(WLAN) technology on his/her deviceconnection (AP, wireless can access the networkrouter, wireless switch, etc.) anytime.visitors will not able to access network. Cost: Wireless network is Power: Wireless Access inexpensive.Point, router, switches, etc. required power to keep it running all the time. Mobility: visitors can access Security: required high the network without cablessecurities to prevent or wires in place of Bluetoothunauthorized people range.access/hack the connection. Connectivity: VisitorsConnectivity: If there is Bluetooth whoever have Bluetoothproblem with Bluetooth technology on his/her deviceAccess Point visitor will not can access the networkable to access network anytime.trough Bluetooth Access Point. Cost: Bluetooth technologyPower: Bluetooth Access is inexpensive. Point required power to keep it running all the time. Explanation Our goal is to establish Wireless LAN at Science museum of ITU. As given on the question, wired infrastructure network (Ethernet LAN) was built in the ITU. So, we will have to connect each wireless device (APs, Switches, Bluetooth APs, Bridges, Router and Gateways) to the Ethernet LAN. We can imagine the design of Ethernet LAN of museum which contents (Application Server/ web server, main switch, ADSL modem and computers).Page 7 of 23 8. Yaseen Alhashim, Dammam | TMA01, T209 | Tutor: Mr. Raed AlshaikhDetails explanation Wireless Access Point: Wireless Access Point (802.11b/g) and BluetoothAccess Point will be installed in visitors room and each other room. EachAccess Point will be connected into network switch located in its room, and eachnetwork switch - (each room) - will be connected into bridge. And bridge isconnected into main network switch located in ITU Network. Bridge: bridge device will be installed between museums rooms and will beconnected with main network switch. ADSL modem/router: will be installed in ITU Network and it should beconnected to the main network switch. It has fast connection speed to theinternet broadband. Visitors: any visitor has (his/her) own device (laptop computer, PDA, Mobilephone) and (he/she) has (wireless or Bluetooth) technology on a device,(he/she) will able to discover the museums Wireless Access Points andBluetooth Access Point. And then able to connect to local Area network of ITUNetwork and browse Intranet, and then browse the museum web-basedapplication and collecting information about the science museum after verifyingvisitor authentication. See figure 2.Figure 2, Wireless Local Area Network Finally,browse web-based ofapplication infrastructure, museum and able all with above designnetworkof socialityvisitor will begettoinformation including video and audio media files by using their laptops, PDA, mobile phone that has wireless technology or Bluetooth technology. Moreover, visitors can Page 8 of 23 9. Yaseen Alhashim, Dammam | TMA01, T209 | Tutor: Mr. Raed Alshaikhaccess the web-based application via internet anytime anywhere through web address (www.iut.com).Total number of words: 1,197 wordsReferences & Bibliography of Question No.1References: (1) MSN Encarta, (2) MSN Encarta, (3) MSN Encarta, (4) MSN Encarta, (5) The Official Bluetooth Technology Info Site, (6) T209 Online Book, (7) Bluetooth Technology, < http://www.bluetomorrow.com/content/view/24/313/> (8) Previ