The importance of packet switching is that it is more economical than using private lines, especially if the amount of traffic between the two terminals does not require a dedicated circuit. Packet switching is also more economical than data when the data communication sessions are shorter than the minimum time for a chargeable call. Packet switching is the technique of sending data in small chunks called packets.
With packet switching, each packet contains destination information, thereby making it easier to send many messages quickly to various destinations. The delivery rate of the messages depends on the speed at which the data terminal equipment can transmit packets. Computers allow dynamic routing at each node.
Packet data has maximum efficiency and throughput because the network always picks the best possible route for a packet to take at any given time. Additionally, the network has an inherent intelligence that allows for graceful degradation of the network if a link or node fails. Although automatic rerouting of packets around a failed area causes congestion, it does not affect the normal functioning of the overall system. The network intelligence also identifies and corrects errors, diagnoses faults, verifies message delivery and checks reverse billing, among other important functions.Learn More
A firewall can be a vital piece of network security that keeps hackers out of a computer system, but it can be complicated to set up properly. Firewalls are designed to scan any traffic that passes through them, allowing only legitimate packets and blocking anything unauthorized. However, they can also inadvertently block legitimate traffic, especially if misconfigured, and make Internet communication programs harder to use.Full Answer >
Some advantages of Internet use include increased access to information, global communication with others, vast opportunities for commercial activities like buying and selling, various online programs and entertainment possibilities. Some disadvantages include privacy concerns, inaccurate information, identity theft and the risk of Internet addiction.Full Answer >
The Internet offers a variety of advantages that include instant communication, business opportunities, online education, work-from-home opportunities and online shopping. Individuals who live in rural areas are able to easily communicate with friends, family members and business associates with just a simple click of a mouse, and individuals around the world can easily communicate with one another via chat, email and video messaging. The Internet is rapidly growing and is the most popular mode of communication in the world.Full Answer >
ICT, or information and communication technology, makes many common tasks simple and facilitates communications from virtually any geographic area. It requires the installation of complex systems that require trained personnel and all working parts in order to operate efficiently.Full Answer >