Asynchronous transmission
Asynchronous data transmission is one of the three methods of data transmission. In asynchronous data transmission, sender or source system sends one character of whole data at once to the receiver or destination system.
Pros & Cons
Write short note on Bus topology with advantages and disadvantages
Bus Topology
Unlike star topology or mesh topology, a bus topology is a multi-point connection between the nodes or devices on the network. A long cable works as backbone of the network. All the different nodes in the network connects at different points on the main cable. A connection point in the main cable for a node or device is the nearest point for the node.
Write short note on Star Topology with advantages and disadvantages
Star Topology
Star topology is one of the four basic topologies of network communication. In this topology, all network devices connects to a controller or hub. This controller or hub enables communication among the network devices. Devices does not connect directly to each other as in Mesh topology. Each device sends data to another device through this hub. And when the hub receives a message, it relays the message to its destination device. As all nodes or devices connects a point, it is called an star topology.
Write short note on Mesh Topology with advantages and disadvantages
Mesh Topology:
Mesh topology is one of the four basic topologies of network communication. This is a point-to-point connection. That means, each devices in the network connects to each other device directly. Mesh topology offers speedy connection between devices due to dedicated communication channel.
What are the three types of transmission modes? Write short notes with advantages and disadvantages.
Three types of transmission modes
Based on the direction of data from sender to receiver, there can be 3 types of transmission modes which are as follows
- Simplex
- Half-duplex
- Duplex
6 Disadvantages of E-commerce?
E-commerce or Electronic Commerce is a modern way of business. Transaction in case of buying or selling a product or service through electronic devices and internet connection is E-commerce. In E-commerce, the buyer and seller can not only communicate with each other but also the buyer can pay and the seller can receive payments through internet connection which can be called electronic payment service. So in E-commerce, a product travels to buyer from seller or a service is served to it’s buyer without the need for the buyer to meet the seller by appearing physically. Again, in E-commerce, the seller receives payment for his/her sale without meeting the buyer physically.
Despite of the many advantages and features of E-commerce, there are some disadvantages of E-commerce. These disadvantages are minor and most of them will be no more with time and updates in technology. However, following are some of the disadvantages of E-commerce.
12 Advantages of E-commerce
E-commerce
E-commerce or Electronic Commerce is a modern way of business. Transaction in case of buying or selling a product or service through electronic devices and internet connection is E-commerce. In E-commerce, the buyer and seller can not only communicate with each other but also the buyer can pay and the seller can receive payments through internet connection which can be called electronic payment service.
E-commerce has many features and must-have features and a few disadvantages also. However, here is a list of 12 Advantages of E-commerce.
Describe the Waterfall Software Process Model with Advantages and Disadvantages
Waterfall Software Process Model:
Waterfall model software process model was derived from general system engineering process and it is so called as the stages go top to bottom and while one stage of the process is complete it moves to the next stage and not supposed to come back to any previous stage. Shortly, the operation enters an stage if and only if the previous stage, if any, completes. However, in practice, things doesn’t happen this way.
Briefly describe the disadvantages of file processing system? DBMS
Disadvantages of File Processing System: Keeping organization information in a file processing system has some disadvantages including the followings, Data Redundancy & Inconsistency: As the files are created by different programmers, there is a huge chance of data redundancy which is responsible for unnecessary storage and access cost. This may also lead to data inconsistency … Read more