SCCT 1023(A) 30 August 2009 Sunday

Today, Miss Azura teached us about the chapter 5 part two...we learn more about communication device, LAN and more...After that, she want us to find some information about the MESH TOPOLOGY and TREE TOPOLOGY...

MESH TOPOLOGY

A type of network setup where each of the computers and network devices are interconnected with one another, allowing for most transmissions to be distributed, even if one of the connections go down. This type of topology is not commonly used for most computer networks as it is difficult and expensive to have redundant connection to every computer. However, this type of topology is commonly used for wireless networks. Below is a visual example of a simple computer setup on a network using a mesh topology:

TREE TOPOLOGY

Also known as a hierarchical network.

The type of network topology in which a central 'root' node (the top level of the hierarchy) is connected to one or more other nodes that are one level lower in the hierarchy (i.e., the second level) with a point-to-point link between each of the second level nodes and the top level central 'root' node, while each of the second level nodes that are connected to the top level central 'root' node will also have one or more other nodes that are one level lower in the hierarchy (i.e., the third level) connected to it, also with a point-to-point link, the top level central 'root' node being the only node that has no other node above it in the hierarchy (The hierarchy of the tree is symmetrical.) Each node in the network having a specific fixed number, of nodes connected to it at the next lower level in the hierarchy, the number, being referred to as the 'branching factor' of the hierarchical tree.

1.) A network that is based upon the physical hierarchical topology must have at least three levels in the hierarchy of the tree, since a network with a central 'root' node and only one hierarchical level below it would exhibit the physical topology of a star.

2.) A network that is based upon the physical hierarchical topology and with a branching factor of 1 would be classified as a physical linear topology.

3.) The branching factor, f, is independent of the total number of nodes in the network and, therefore, if the nodes in the network require ports for connection to other nodes the total number of ports per node may be kept low even though the total number of nodes is large – this makes the effect of the cost of adding ports to each node totally dependent upon the branching factor and may therefore be kept as low as required without any effect upon the total number of nodes that are possible.

4.) The total number of point-to-point links in a network that is based upon the physical hierarchical topology will be one less than the total number of nodes in the network.

5.) If the nodes in a network that is based upon the physical hierarchical topology are required to perform any processing upon the data that is transmitted between nodes in the network, the nodes that are at higher levels in the hierarchy will be required to perform more processing operations on behalf of other nodes than the nodes that are lower in the hierarchy. Such a type of network topology is very useful and highly recommended.

SCCT 1023(A) 26 August 2009 Wednesday

The advantages and disadvantages of Fiber Optic:

The advantages and disadvantages of Coaxial Cable:

The advantages and disadvantages of Twisted Pair:

SCCT 1023(A) 26 August 2009 Wednesday

This wednesday, Miss Azura teach us about data communication. She want us to be more understanding about this chapter. She asked us to find some information about Fiber Optic, Coaxial Cable and Twisted Pair.

The diagram of STP and UTP:

SCCT 1023 12-8-2009

Today, Miss Azura absent...we heard that she was sick...hopefully,she will recover soon...but today the lecture didn't cancel,she have replace another lecturer to teach us...
We all thought that today won't have a pop quiz...but...unfortunately,we still have the pop quiz...haiz...we all don't know how to answer it...cannot tiru...its a hard moment for us...we all tried to recall our memory to answer the question...
Hopefully,we will correct many question...haha...who ask us don't study hard...haiz...

SCCT 1023 9-8-2009

That day, Miss Azura came in lecture hall with wearing a mask…nowadays, many virus were spread in our life…just want to prevent and protect our health…hehe…
The topic we learned at that day is about online annoyances and internet…we know detail about the pop-ups, spam…know more about the origin of internet…we gain a lots of knowledge about internet…I almost forget that I have learned that before at the class of TID1103…haha…
After that, Miss Azura told us will have a pop quiz at Wednesday…oh my god!!! I so worry…worry that I can’t answer the question…hopefully, I can do it all quiz…hope Miss Azura won’t give the difficult question to us…please…

SCCT 1023 5-8-09

After that,Miss Azura want us to know more deeply about E-Commerce...like B2B,B2C and C2C...
1. B2C
Business-to-consumer e-commerce, or commerce between companies and consumers, involves customers gathering information; purchasing physical goods or information goods and, for information goods, receiving products over an electronic network.
It is the second largest and the earliest form of e-commerce. Its origins can be traced to online retailing (or e-tailing). Thus, the more common B2C business models are the online retailing companies such as Amazon.com, Drugstore.com, Beyond.com, Barnes and Noble and ToysRus. Other B2C examples involving information goods are E-Trade and Travelocity.
The more common applications of this type of e-commerce are in the areas of purchasing products and information, and personal finance management, which pertains to the management of personal investments and finances with the use of online banking tools.
B2C e-commerce also reduces market entry barriers since the cost of putting up and maintaining a Web site is much cheaper than installing a “brick-and-mortar” structure for a firm. In the case of information goods, B2C e-commerce is even more attractive because it saves firms from factoring in the additional cost of a physical distribution network. Moreover, for countries with a growing and robust Internet population, delivering information goods becomes increasingly feasible.

2. C2C
Consumer-to-consumer e-commerce or C2C is simply commerce between private individuals or consumers.
This type of e-commerce is characterized by the growth of electronic marketplaces and online auctions, particularly in vertical industries where firms/businesses can bid for what they want from among multiple suppliers.16 It perhaps has the greatest potential for developing new markets.
This type of e-commerce comes in at least three forms:
auctions facilitated at a portal, such as eBay, which allows online real-time bidding on items being sold in the Web;
peer-to-peer systems, such as the Napster model (a protocol for sharing files between users used by chat forums similar to IRC) and other file exchange and later money exchange models; and
classified ads at portal sites such as Excite Classifieds and eWanted (an interactive, online marketplace where buyers and sellers can negotiate and which features “Buyer Leads & Want Ads”).

3. B2B
B2B e-commerce is simply defined as e-commerce between companies. This is the type of e-commerce that deals with relationships between and among businesses. About 80% of e-commerce is of this type, and most experts predict that B2B e-commerce will continue to grow faster than the B2C segment. The B2B market has two primary components: e-frastructure and e-markets. Efrastructure is the architecture of B2B, primarily consisting of the following:
logistics - transportation, warehousing and distribution (e.g., Procter and Gamble);
application service providers - deployment, hosting and management of packaged software from a central facility (e.g., Oracle and Linkshare);
outsourcing of functions in the process of e-commerce, such as Web-hosting, security and customer care solutions (e.g., outsourcing providers such as eShare, NetSales, iXL Enterprises and Universal Access);
auction solutions software for the operation and maintenance of real-time auctions in the Internet (e.g., Moai Technologies and OpenSite Technologies);
content management software for the facilitation of Web site content management and delivery (e.g., Interwoven and ProcureNet); and
Web-based commerce enablers (e.g., Commerce One, a browser-based, XML-enabled purchasing automation software).
E-markets are simply defined as Web sites where buyers and sellers interact with each other and conduct transactions.
The more common B2B examples and best practice models are IBM, Hewlett Packard (HP), Cisco and Dell. Cisco, for instance, receives over 90% of its product orders over the Internet.
Most B2B applications are in the areas of supplier management (especially purchase order processing), inventory management (i.e., managing order-ship-bill cycles), distribution management (especially in the transmission of shipping documents), channel management (i.e., information dissemination on changes in operational conditions), and payment management (e.g., electronic payment systems or EPS).

SCCT 1023 5-8-09 Wednesday

Yesterday,Miss Azura want us to find out about what is My EG Portal and Rilek Portal...
My E.G. Services Berhad and its Group of companies is principally engaged in the business of development and implementation of Electronic Government (E-Government) services and the provision of other related services for the E-Government Initiative as well as investment holding. The E-Government Initiative is a Government programme which focuses on delivering improvements in terms of how the Government operates internally, and how it delivers services to the people. The overall E-Government Initiatives focuses on allowing citizens to retrieve information and perform transactions with various Service Suppliers in a convenient and timely manner by utilizing its Electronic Services (E-Services). The main Service Suppliers that currently employ our E-Government services and solutions are Dewan Bandaraya Kuala Lumpur ("DBKL"), Jabatan Insolvency Malaysia ("JIM"), Jabatan Pengangkutan Jalan ("JPJ"), Polis Diraja Malaysia ("PDRM"), Tenaga Nasional Berhad ("TNB") and Telekom Malaysia Berhad ("TMB").


In addition, Rilek portal is the revolutionary way to perform all your e-government services: i. Jabatan Pengangkutan Jalan (JPJ)ii. Polis DiRaja Malaysia (PDRM)iii. Telekom Malaysia Berhad (TMB)iv. Tenaga Nasional Berhad (TNB)Rilek portal provide easy transactions electronically via various delivery channels and offers JPJ Driving Licences services, summons payments and inquiries on Kejara points. Their services also include electronic utility bill payment for TNB and Telekom bills.

SCCT 1023 2-8-2009

Yesterday,Miss Azura teach us more detailly about the topic of Computer Technology...she posted a lot of animation and picture on the slide show...but most of us very tired because we all just come back to campus from our hometown...we all just keep talking and don't pay attention in lecture...Miss Azura felt very unrespectful to her...we all doesn't feel it...so,Miss Azura warned us and hope us will be quiet...be respect to her...then,we all be silent and pay more attention on her lecture...finally,most of us already pass up the second individual assignment to her...yeah!!!!
Here,we want to apologize to Miss Azura...so sorry we all make you angry...we won't do it again...sorry...