answer is d hope it helps
The best answer is A
Windows are the screens you can maximize and minimize.
Trackballs make the mouse move.
Modems are associated with internet connection.
Those three answers are unrelated leaving icons to be the most reasonable.
Hey there!
The main memory of a computer that includes RAM, ROM, and cached information that is accessible through the CPU is called primary storage. These memory/storage types deal directly with how the computer functions and runs. The other type of storage is called secondary storage and refers to storage that isn't directly connected to the CPU, such as the hard drive.
Hope this helped you out! :-)
Answer:
Explanation:
In data communications, a protocol is <em>connectionless </em>if it describes communication between two devices in a network without first establishing or verifying establishment of some link (connection) between the two devices. In a connectionless protocol, data are exchanged between processes or devices without a prior check of whether the processes are ready to transmit data or not. In this type of protocol, there's no verification put in place to remember if these processes were or are in communication. Connectionless protocols are also called stateless protocols. Because connectionless protocol cannot be relied upon due to its lack of delivery-assurance policy, it is sometimes referred to as <em>unreliable protocol</em>. In other words, delivery of data packets is not guaranteed. An example of a connectionless protocol is the UDP (User Datagram Protocol).
However, if the protocol defines some checks to ascertain that there is first a connection between two communicating processes before beginning transmission, then, the protocol is <em>connection-oriented. </em>An example of this is the TCP (Transmission Control Protocol). Connection-oriented protocols are reliable since they ensure connection be made between processes before transmitting data packets.
A typical application of a connectionless/unreliable protocol is in the streaming of real time videos or voice communication where packets of data could be dropped and not resent.
An example of the connection-oriented/reliable protocol is analogous to making a telephone call where data packets (voice messages) are not sent until the receiver on the other end makes a connection.
