Which address is used in an internet employing the TCP/IP protocols?a)...
Addressing in TCP/IP protocols
TCP/IP (Transmission Control Protocol/Internet Protocol) is a set of protocols used for communication over the internet. It is the foundation of the modern internet and provides a reliable and standardized way for computers to communicate with each other.
Addressing in TCP/IP
In the TCP/IP protocols, there are several types of addresses used for different purposes. These addresses help to identify the source and destination of data packets being sent over the network. The main types of addresses used in TCP/IP are:
1. Physical Address: Also known as the MAC (Media Access Control) address, the physical address is a unique identifier assigned to the network interface card (NIC) of a device. It is a 48-bit address and is typically represented as six pairs of hexadecimal digits separated by colons or hyphens. The physical address is used at the data link layer of the TCP/IP model to identify devices on a local network (such as Ethernet).
2. Logical Address: The logical address, also referred to as the IP (Internet Protocol) address, is a unique identifier assigned to a device on a network. It consists of a network portion and a host portion. The IP address is a 32-bit address (IPv4) or a 128-bit address (IPv6). The logical address is used at the network layer of the TCP/IP model to identify devices on a network globally.
3. Port Address: The port address is a numerical identifier used to identify specific services or applications running on a device. It is a 16-bit number and is used at the transport layer of the TCP/IP model. The combination of an IP address and a port number allows multiple services to run on a single device.
4. Specific Address: This term is not commonly used when referring to TCP/IP addressing. It may refer to a specific IP address or port number in a given context.
Conclusion
In summary, the correct answer is option 'D' - all of the mentioned. TCP/IP protocols use both physical (MAC) addresses and logical (IP) addresses to identify devices on a network. Additionally, port addresses are used to identify specific services or applications running on a device.