Answer:
d. All of the above
Explanation:
Physical layer is the lowest layer of the OSI reference model that deals with the setup of physical connection to the network and with transmission and reception of signals.
Full duplex (FDx) is a bidirectional type of communication system where two end nodes send and receive data signals at the same time, and a single carrier is simultaneously used for dual communication.
To send or receive data, the participating nodes in a Full Duplex system do not have to wait for a free carrier/medium. It employs a medium that has at least two internal channels - one for sending and one for receiving.
Based on the above explanations, options A, B and C are valid and are correct ways to accomplish full-duplex (FDX) digital communications on guided medium at the physical layer (OSI Layer 1). There all of them are correct.
Answer: Tar.
Explanation:
A chemical substance made when tobacco is burned. Tar contains most of the cancer-causing and other harmful chemicals found in tobacco smoke. When tobacco smoke is inhaled, the tar can form a sticky layer on the inside of the lungs.
The term "Folder" is used in an OS GUI to describe a specialized file that contains information about the locations of other files. OS stands for Operating System and GUI stands for Graphic User Interface, the interface that allows users to interact with computers. Folder is <span>an icon on a computer screen. By clicking it the user access a directory containing related files or document.</span>
<span>The material placed around the ignition device to feed the flame in arson is referred to as </span>plant.
