22) To transfer data packets between two or more networks, a ________ is used.A) routerB) hubC) firewallD) switch
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Which techniques would increase the bandwidth for network transmission by joining multiple connections into one logical connection?
A network packet is a basic unit of data that's grouped together and transferred over a computer network, typically a packet-switched network, such as the internet. Each packet or chunk of data forms part of a complete message and carries pertinent address information that helps identify the sending computer and intended recipient of the message. A network packet has three parts: the packet header, payload and trailer. The size and structure of a network packet are dependent on the underlying network structure or protocol used. Conceptually, a network packet is like a postal package. In this scenario, the header is the box or envelope, the payload is content and the trailer is the signature. The header contains instructions related to the data in the packet. A network packet works by choosing the best route available to its destination This is a route taken by all the other packets within a message, making the network traffic more efficient in terms of balancing a load across various pieces of equipment. For instance, if there's an issue with a piece of equipment during message transmission, the packets are redirected through routers to ensure the entire message gets to its destination. Generally, most networks today operate on the TCP/IP stack, which makes it possible for devices connected to the internet to communicate with one another across different networks.
Network packets are similar in function to a postal package. A network packet or unit of data goes through the process of encapsulation, which adds information to it as it travels toward its destination and marks where it begins and ends. A network packet is made up of the following three parts: An IPv4 packet comprises the following components.
IPv6 is the newer version of IPv4, which was developed in the early 1980s. And, despite the introduction and adoption of the modern IPv6, IPv4 still routes most of today's internet traffic. IPv6 uses different IP headers for data packets, as an IPv6 address is four times larger than an IPv4 address. It's a more streamlined version of IPv4 and provides better support for real-time traffic by eliminating the fields that are rarely used or are unnecessary. IPv6 header and extensionsPackets are used for efficient and reliable transmission of data. Instead of transferring a huge file as a single data block, sending it in smaller packets improves transmission rates. Packets also enable multiple computers to share the same connection. For example, if one person is downloading a file, the computer can send packets to the server, while another user is simultaneously sending packets to the same server. While it's possible to transfer data without using packets, it would be highly impractical to send the data without first slicing it into smaller chunks. The following are some of the benefits of using packets:
In the world of telecommunications, both circuit switching and packet switching are popular methods of connecting communicating devices together. However, they differ in their methodology. Packet switching is used for grouping data into packets for transmission over a digital network. It's an efficient way to handle transmissions on a connectionless network, such as the internet. On the other hand, circuit-switched transmission is used for voice networks. In circuit switching, lines in the network are shared among many users as with packet switching. However, each connection requires the dedication of a particular path for the duration of the connection. The following highlights the major pros and cons of both technologies. Packet switching
Circuit switching
Learn how TCP/IP and the Open Systems Interconnection model differ when it comes to network communications.
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