A) Look Mun Fai
B) 1001232679
C) After completing this course I have understand how information systems are used to help an organisation meet their goals. I have learn the basic concepts in computer communication,basic functions components of computers and common hardware components, including processing, storage, input, and output devices and connectors.The another 2nd week I have learn the basic types of software and considerations for installing, updating, and upgrading software,common network types, architectures, and topologies.
To more deeper learn in the internet social, I have learn the basic concepts in network communication, including the OSI reference model, IP addresses, and protocols,common LAN and WAN technologies, transmission media, and protocols and the basic concepts and areas of information security, including authentication, encryption, and firewalls.
Monday 14 October 2013
Monday 7 October 2013
Tutorial 5 – 7th OCT. 2013
A)
ACID (an acronymn for Atomicity Consistency Isolation Durability) is a concept that Database Professionals generally look for when evaluating databases and application architectures. For a reliable database all this four attributes should be achieved.
Atomicity is an all-or-none proposition.
Consistency guarantees that a transaction never leaves your database in a half-finished state.
Isolation keeps transactions separated from each other until they’re finished.
Durability guarantees that the database will keep track of pending changes in such a way that the server can recover from an abnormal termination.
B)
Example of podcast website. Click here !
C)
The Shawshank Redemption (1994)
The Godfather (1972)
Captain Phillips (2013)
The Fifth Estate (2013)
Romeo and Juliet (2013)
The search bar on top of the website which visitors can search the movies they want. Visitors search it by categories. IMDb provides summary of the movie, the actors and actresses, trailer, Genre of the movie, rating and users reviews.
The visitors will benefits most because IMDb provides detailed details about the movies. Thus, visitors won't have any difficulty searching for the movies they wanted to search for.
ACID (an acronymn for Atomicity Consistency Isolation Durability) is a concept that Database Professionals generally look for when evaluating databases and application architectures. For a reliable database all this four attributes should be achieved.
Atomicity is an all-or-none proposition.
Consistency guarantees that a transaction never leaves your database in a half-finished state.
Isolation keeps transactions separated from each other until they’re finished.
Durability guarantees that the database will keep track of pending changes in such a way that the server can recover from an abnormal termination.
B)
Example of podcast website. Click here !
C)
The Shawshank Redemption (1994)
The Godfather (1972)
Captain Phillips (2013)
The Fifth Estate (2013)
Romeo and Juliet (2013)
The search bar on top of the website which visitors can search the movies they want. Visitors search it by categories. IMDb provides summary of the movie, the actors and actresses, trailer, Genre of the movie, rating and users reviews.
The visitors will benefits most because IMDb provides detailed details about the movies. Thus, visitors won't have any difficulty searching for the movies they wanted to search for.
Friday 4 October 2013
Tutorial 4(B) – 1st OCT. 201
A)
Dedicate Line- A dedicated line is a communications cable or other facility dedicated to a specific application, in contrast with a shared resource such as the telephone network or the Internet.
In practice, such services may not be provided by a single, discrete, end-to-end cable, but they do provide guarantees of constant bandwidth availability and near-constant latency, properties that cannot be guaranteed for more public systems.
ISDN Line- Integrated Services for Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network. ISDN is a circuit-switched telephone network system, which also provides access to packet switched networks, designed to allow digital transmission of voice and data over ordinary telephone copper wires, resulting in potentially better voice quality than an analog phone can provide.
Dedicate Line- A dedicated line is a communications cable or other facility dedicated to a specific application, in contrast with a shared resource such as the telephone network or the Internet.
In practice, such services may not be provided by a single, discrete, end-to-end cable, but they do provide guarantees of constant bandwidth availability and near-constant latency, properties that cannot be guaranteed for more public systems.
ISDN Line- Integrated Services for Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network. ISDN is a circuit-switched telephone network system, which also provides access to packet switched networks, designed to allow digital transmission of voice and data over ordinary telephone copper wires, resulting in potentially better voice quality than an analog phone can provide.
DSL- Digital subscriber line (DSL, originally digital subscriber loop) is a family of technologies that provide Internet access by transmitting digital data over the wires of a local telephone network. In telecommunications marketing, the term DSL is widely understood to mean asymmetric digital subscriber line (ADSL), the most commonly installed DSL technology.
Fiber to the premise (FTTP)- Fiber-To-The-Premises (FTTP) is a technology for providing Internet access by running fiber optic cable directly from an Internet Service Provider (ISP) to a user's home or business.
T-carrier lines- T-carrier, sometimes abbreviated as T-CXR, refers to one of several digital transmission systems developed by Bell Labs. T-carriers are used in North America, South Korea, and Kyoto.The first of these was Transmission System 1 (T-1), which Bell Labs introduced in 1962. T-1 greatly increased the number of telephone calls the telephone network was capable of transmitting at one time.
Asynchronous Transfer Mode (ATM)- Asynchronous Transfer Mode (ATM) is, according to the ATM Forum, "a telecommunications concept defined by ANSI and ITU (formerly CCITT) standards for carriage of a complete range of user traffic, including voice, data, and video signals". ATM was developed to meet the needs of the Broadband Integrated Services Digital Network, as defined in the late 1980s, and designed to unify telecommunication and computer networks.
B)
The TL-ER5120 Gigabit Load Balance Broadband Router from TP-LINK possesses excellent data processing capabilities and multiple powerful functions including Load Balance, Access Control, IM/P2P Blocking, DoS Defense, Bandwidth Control, Session Limit and PPPoE Server, which meet the needs of small and medium enterprises, hotels and communities with large volumes of users demanding an efficient and easy-to-manage network with high security.
| HARDWARE FEATURES | |
|---|---|
| Standards and Protocols | IEEE 802.3, 802.3u, 802.3ab TCP/IP, DHCP, ICMP, NAT, PPPoE, SNTP, HTTP, DNS, IPsec, PPTP, L2TP |
| Interface | 1 Fixed 10/100/1000Mbps WAN Port 3 Free Changeable 10/100/1000Mbps WAN/LAN Ports 1 Fixed 10/100/1000Mbps LAN/DMZ Port 1 Console Port (RJ-45 On RS232) |
| Network Media | 10BASE-T: UTP category 3, 4, 5 cable (Max 100m) EIA/TIA-568 100Ω STP (Max 100m) 100BASE-TX: UTP category 5, 5e cable (Max 100m) EIA/TIA-568 100Ω STP (Max 100m) 1000BASE-T: UTP category 5, 5e, 6 cable (Max 100m) |
| Flash | 8MB |
| DRAM | DDRII 128MB |
| LED | PWR, SYS, Link/Act, Speed, WAN, DMZ |
| Button | Reset Button |
| Dimensions ( W x D x H ) | 17.3x8.7x1.7 in.(440x220x44 mm) 19-inch Standard Rack-Mount Width, 1U Height |
| Power Supply | Internal Universal Power Supply AC100-240V~ 50/60Hz Input |
| PERFORMANCE | |
|---|---|
| Concurrent Session | 120000 |
| NAT Throughput | 350Mbps |
| BASIC FUNCTIONS | |
|---|---|
| DHCP | DHCP Server/Client DHCP Reservation |
| MAC Clone | Modify WAN/LAN/DMZ MAC Address |
| Switch Setting | Port Mirror Rate Control Port Config Port VLAN |
| WAN Connection Type | Dynamic IP, Static IP, PPPoE, PPTP, L2TP, Dual Access, BigPond |
| ADVANCED FUNCTIONS | |
|---|---|
| Load Balance | Intelligent Load Balance Policy Routing Protocol Binding Link Backup (Timing, Failover) Online Detection |
| NAT | One-to-One NAT Multi-nets NAT Virtual Server, DMZ Host, Port Triggering, UPnP FTP/H.323/SIP/IPsec/PPTP ALG |
| Routing | Static Routing Dynamic Routing (RIP v1/v2) |
| System Mode | NAT, Non-NAT, Classical Routing |
| Traffic Control | IP-based Bandwidth Control Guarantee & Limited Bandwidth Time-scheduled Policy IP-based Session Limit |
| SECURITY | |
|---|---|
| ARP Inspection | Sending GARP Packets ARP Scanning by WAN/LAN IP-MAC Binding |
| Application Control | IM, P2P, Web IM, Web SNS, Web Media, Protocol, Proxy Blocking |
| Attack Defense | TCP/UDP/ICMP Flood Defense Block TCP Scan (Stealth FIN/Xmas/Null) Block Ping from WAN |
| DMZ Port | 1 Hardware DMZ Port |
| Filtering | MAC Filtering URL/Keywords Filtering Web Content Filtering (Java, ActiveX, Cookies) |
| MANAGEMENT | |
|---|---|
| Maintenance | Web/CLI/Telnet Management Interface Remote Management Export & Import Configuration NTP Synchronize Syslog Support |
| Service | PPPoE Server E-Bulletin Dynamic DNS (Dyndns, No-IP, Peanuthull, Comexe) |
| OTHERS | |
|---|---|
| Certification | CE, FCC, RoHS |
| Package Contents | TL-ER5120 Resource CD Power Cord Rack-mount Kit Installation Guide |
| System Requirements | Microsoft® Windows® 98SE, NT, 2000, XP, Vista™ or Windows 7, MAC® OS, NetWare®, UNIX® or Linux |
| Environment | Operating Temperature: 0℃~40℃ (32℉~104℉) Storage Temperature: -40℃~70℃ (-40℉~158℉) Operating Humidity: 10%~90% non-condensing Storage Humidity: 5%~90% non-condensing |
Tutorial 4(A) – 30th SEPT. 2013
A) Green computing, green IT or ICT Sustainability, is the study and practice of environmentally sustainable computing or IT. San Murugesan notes that this can include "designing, manufacturing, using, and disposing of computers, servers, and associated subsystems—such as monitors, printers, storage devices, and networking and communications systems — efficiently and effectively with minimal or no impact on the environment.
B) 1. Conserve energy
2. Reduce Paper Consumption
3. Make environmentally sound purchase decisions.
4. Recycle
5. Develop a sustainable green computing plan.
C) http://www.energystar.gov/index.cfm?c=power_mgt.pr_power_mgt_users
D)
Tutorial 3(B) – 24th SEPT. 2013
Part 1
1. Cloud storage is a model of networked enterprise storage where data is stored in virtualized pools of storage which are generally hosted by third parties. Hosting companies operate large data centers, and people who require their data to be hosted buy or lease storage capacity from them. The data center operators, in the background, virtualize the resources according to the requirements of the customer and expose them as storage pools, which the customers can themselves use to store files or data objects. Physically, the resource may span across multiple servers and multiple locations. The safety of the files depends upon the hosting companies, and on the applications that leverage the cloud storage.
2.
1. Cloud storage is a model of networked enterprise storage where data is stored in virtualized pools of storage which are generally hosted by third parties. Hosting companies operate large data centers, and people who require their data to be hosted buy or lease storage capacity from them. The data center operators, in the background, virtualize the resources according to the requirements of the customer and expose them as storage pools, which the customers can themselves use to store files or data objects. Physically, the resource may span across multiple servers and multiple locations. The safety of the files depends upon the hosting companies, and on the applications that leverage the cloud storage.
2.
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Part 2
1.- The surface is divided into micro sized areas known as magnetic domains. Every magnetic domain has a magnetic dipole which has their own field.
- In a hard disk information / data is written on the rotating platters by the read and write heads.
- The write heads read/write by magnetizing the area. It generates a strong magnetic field for this purpose.
- The heads are not in actual contact with the disk they are actually slightly above the magnetic surface of the platter.
- The heads detects the magnetization of the platter right below them. The actuator arm aids the heads in covering the platter area.
Tutorial 3(A) – 23rd SEPT. 2013
This is the original picture that without any effect.
Navigate to the Photoshop Express Editor Web site (http://www.photoshop.com/tools?wf=editor) and click on upload photo.
Make sure that your picture is not larger than 16 megapixels and is in the JPEG,JPG, or JPE format. And then click on upload and save.
Click on Exposure in the edit left hand side and make it into -x3 deeper.
To make it more prefect, click on saturation and make it into x2 color-ling.
City need to sun light to illuminate the building, click on highlight and make it into first deeper right.
On the edit side, Click on Crop & Rotation and click the rotation right(clockwise) twice time.
Text it the only one to show the meaning in the picture. Click on Decorate and click on Text. Write down the text and move it to your favorite place in the picture.
Once the picture have been complete. Click on done under the page and and save it into your computer.
Once the picture are edited, it will become more nice. The upside city, VMT.
Tutorial 2 (A)
(i) Portal- A web portal is most often one specially-designed Web page at a website which brings information together from diverse sources in a uniform way.For example,MSN and Yahoo!.
(ii) New- An online newspaper, also known as a web newspaper, which exists on the World Wide Web or Internet, either separately or as an online version of a printed periodical. For example is Xing Chew and China Press.
(iii) Informational- A major informational site is wikipedia.org, the online encyclopedia. And it is unique, because it allows visitors to contribute and edit articles.For example,Analytical Sciences Digital Library and AIM.
(iv) Business/Marketing- In the days before the Internet, we used the print, radio, and television media to spread the word about our businesses. With your online brochure or catalog, you can show anyone who looks for and finds your website, photos and descriptions of your products or services. To some this may sound like an Ecommerce Website, but there are many businesses that deal in products or services that are not sellable over the web.For example,Amazon and Espresso.
(v) Blog- A blog (a contraction of the words web log) is a discussion or informational site published on the World Wide Web and consisting of discrete entries ("posts") typically displayed in reverse chronological order (the most recent post appears first). For example, blogger and word press.
(vi) Wiki- A wiki is usually a web application which allows people to add, modify, or delete content in a collaboration with others. Text is usually written using a simplified markup language or a rich-text editor.While a wiki is a type of content management system, it differs from a blog or most other such systems in that the content is created without any defined owner or leader, and wikis have little implicit structure, allowing structure to emerge according to the needs of the users. For example, Wikipedia and hudong.
(vii) Online Social Network- A social networking service is a platform to build social networks or social relations among people who, for example, share interests, activities, backgrounds, or real-life connections. A social network service consists of a representation of each user (often a profile), his/her social links, and a variety of additional services. Most social network services are web-based and provide means for users to interact over the Internet, such as e-mail and instant messaging. Fro example, Facebook and Twitter.
(viii) Educational- Educaional websites are the sites made for the purpose of education , purpose may vary accordingly it may be to educate them or counsel them. some websites likes facebook provide the facility to make your own page for the institution or wherever you are working for example GSSS Fatehabad is the page having information of its own school for the educational purposes.For example,UCSI University and WorldBook.
(ix) Entertainment- A entertaining website will entertain, rather than provide information that you need or want.For example,Youtube and Starcraft II.
(x) Advocacy- Advocacy is a political process by an individual or group which aims to influence public-policy and resource allocation decisions within political, economic, and social systems and institutions. Advocacy can include many activities that a person or organization undertakes including media campaigns, public speaking, commissioning and publishing research or polls or the filing of an amicus brief. For example,World Advocacy and Greenpeace.
(xi) Web Application- A web-based application is any application that uses a web browser as a client. The term may also mean a computer software application that is coded in a browser-supported programming language (such as JavaScript, combined with a browser-rendered markup language like HTML) and reliant on a common web browser to render the application executable. For example- Flickr and Screenr.
(xii) Content Aggregator- Aggregator refers to a web site or computer software that aggregates a specific type of information from multiple online sources.For example,RRS Reader and Google Reader.
(xiii) Personal- Personal web pages are World Wide Web web pages created by an individual to contain content of a personal nature rather than on behalf of a company, organization or institution.For example,Noah Stokes and Christopher Calicott.
(ii) New- An online newspaper, also known as a web newspaper, which exists on the World Wide Web or Internet, either separately or as an online version of a printed periodical. For example is Xing Chew and China Press.
(iii) Informational- A major informational site is wikipedia.org, the online encyclopedia. And it is unique, because it allows visitors to contribute and edit articles.For example,Analytical Sciences Digital Library and AIM.
(iv) Business/Marketing- In the days before the Internet, we used the print, radio, and television media to spread the word about our businesses. With your online brochure or catalog, you can show anyone who looks for and finds your website, photos and descriptions of your products or services. To some this may sound like an Ecommerce Website, but there are many businesses that deal in products or services that are not sellable over the web.For example,Amazon and Espresso.
(v) Blog- A blog (a contraction of the words web log) is a discussion or informational site published on the World Wide Web and consisting of discrete entries ("posts") typically displayed in reverse chronological order (the most recent post appears first). For example, blogger and word press.
(vi) Wiki- A wiki is usually a web application which allows people to add, modify, or delete content in a collaboration with others. Text is usually written using a simplified markup language or a rich-text editor.While a wiki is a type of content management system, it differs from a blog or most other such systems in that the content is created without any defined owner or leader, and wikis have little implicit structure, allowing structure to emerge according to the needs of the users. For example, Wikipedia and hudong.
(vii) Online Social Network- A social networking service is a platform to build social networks or social relations among people who, for example, share interests, activities, backgrounds, or real-life connections. A social network service consists of a representation of each user (often a profile), his/her social links, and a variety of additional services. Most social network services are web-based and provide means for users to interact over the Internet, such as e-mail and instant messaging. Fro example, Facebook and Twitter.
(viii) Educational- Educaional websites are the sites made for the purpose of education , purpose may vary accordingly it may be to educate them or counsel them. some websites likes facebook provide the facility to make your own page for the institution or wherever you are working for example GSSS Fatehabad is the page having information of its own school for the educational purposes.For example,UCSI University and WorldBook.
(ix) Entertainment- A entertaining website will entertain, rather than provide information that you need or want.For example,Youtube and Starcraft II.
(x) Advocacy- Advocacy is a political process by an individual or group which aims to influence public-policy and resource allocation decisions within political, economic, and social systems and institutions. Advocacy can include many activities that a person or organization undertakes including media campaigns, public speaking, commissioning and publishing research or polls or the filing of an amicus brief. For example,World Advocacy and Greenpeace.
(xi) Web Application- A web-based application is any application that uses a web browser as a client. The term may also mean a computer software application that is coded in a browser-supported programming language (such as JavaScript, combined with a browser-rendered markup language like HTML) and reliant on a common web browser to render the application executable. For example- Flickr and Screenr.
(xii) Content Aggregator- Aggregator refers to a web site or computer software that aggregates a specific type of information from multiple online sources.For example,RRS Reader and Google Reader.
(xiii) Personal- Personal web pages are World Wide Web web pages created by an individual to contain content of a personal nature rather than on behalf of a company, organization or institution.For example,Noah Stokes and Christopher Calicott.
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