MESH TOPOLOGY AND TREE TOPOLOGY

MESH TOPOLOGY
mesh topology is a way to route data, voice and instruction between nodes. it allow continuous connection and reconfiguration around broken or blocked path by hopping from node to node until the destination is reached. a mesh network whose nodes are all connected to each other is a fully connection network. it differ from other network in that the component part can all connect to each other via multiple hops, and they generally are not mobile. mesh network can be seen as one type of ad hoc network. mobile ad hoc network (MANET) and mesh network are therefore closely related. the network in mesh can still operate even when a node breaks down or connection goes bad.

TREE TOPOLOGY
also known as a star bus topology. it is one of the most common types of network setups that is similar to abus topology and a star topology. a tree topology connects multiple star network to other star network. if the main cable or trunk between each of the two star topology network failed, those network would be unable to communicate on the same star topology would still be able to communicate with each other.

ADVENTAGES AND DISADVENTAGES WIRED TRANSMISSION MEDIA

1. TWISTED PAIR: adventages
   

a) inexpensive and reasiasilyly availabe
b) flexible and light weight
c) easy to work with and install
disadventage
a) suseptibility to interference and noise
b) attenuation problem. for analog, repeaters needed every5.6km.for
digital, reapeters needed 2.3km
c) relative low bandwidth (3000Hz)

2. COAXIAL CABLE: adventage
a) higher bandwidth
b) can be tapped easly
c) much less susceptible to interference than twisted pair
disadventage
a) high attenuation rate makes it expensive over long distance
b) bulky

3. FIBER_OPTIC CABLE: adventage
a) greater capacity (brandwidth of up to 2 Gbps
b) smaller size and lighter weight
c) lower attenuation
disadventage
a) expensive over short distance
b) reguire highly skillied installiers
c) adding additional nodes is difficult

STP AND UTP

STP UTP

B2B,B2C,C2C

BUSINESS TO BUSINESS ( B2B)

1. describe commerce transaction between a manufacture and wholesaler, or between the wholesaler and the retailer.
2. the volume in B2B is more higher than the volume of B2C transaction. it is beacuse, the typical supply chain there were be many transaction in B2B involving subcomponent or raw materials . but there are only one B2C transaction.
3. describe all product and services used by enterprise
4. Online business directory which towards eliminating global boundaries
5. platform for manufacture, traders, suppliers as well as buyers.
6. the import and export trade lead posted through go4Worldbusiness.com. this for entrepreneurs to explore new importes and exporters to reach their target in market in a efficient manner.

BUSINESS TO CONSUMER

1. describe activities of business serving end consumer with product and/ or services.
2. it relate to B2B that a transaction to occurs between a company and another comany as oppose to transaction involving a consumer.
3. now their have telemarketing in B2C to help anyone to reach into consumer marketing with high quality inbound and outbound B2C telemarketing service

CONSUMER TO CONSUMER

1. Electronic commerce that involve the electronically-facilitated transaction between consumer consumer through some third party
2. expected to increase in the future because it cut out the cost of using another company
3. large communication in the same geographical region for student that student can use low money.

MYEG PORTAL AND RILEK PORTAL

MYEG PORTAL

1. A concessionaire for the malaysian E-government MSC Flagship Application.
2. is a service provider for the electronic link between the government and the citizen or business.
3. offer the Malaysian pubic a single point of contact between the government and the people through their portal. this portal created to enables Malaysian to dynamically interact with numerous agencies within the federal, state and local government.
4. MYEG have been set up E-services centres that located throughout the country to complement our online presence.
5. E-service they can enhance the government of Malaysian and all ofMalaysian citizen.
6. can renew Malaysian citizen road tax and insurance.

RILEK portal

1. as atransactional platform and providing the public easy acces to the government, and related agencies services.
2. hans on in Java in a client server environment. enterprice Java Beans web based/ html application or equivalent programming environment.
3. cearning about new programming language and method
4. to provide innovative online solution and direct systemlinkages to JPJ, TNB, telecom and many more
5. provide an edge in online payment authorities and multipleservise integration
6. is the revolutionary way to perform all government transaction electronicaly via various delivery channel.