Question

State whether it is true or false:
A Crossover Ethernet Cable has got both its ends identical to each other.


Multiple choice questions:
Which one of the following modes of transmission requires the devices to be in a direct line of sight with each other?
a.Wi-Fi
b.Bluetooth
c.Infrared Technology



Please give these 2 answers as fast as possible.It is very very very very very very very very very very very very very very urgent.

Answer 1

Answer:

State whether it is true or false:

A Crossover Ethernet Cable has got both its ends identical to each other.= false

Multiple choice questions:

Which one of the following modes of transmission requires the devices to be in a direct line of sight with each other?

a.Wi-Fi

b.Bluetooth

c.Infrared Technology

=c. Infrared technology

Answer 2

Answer:

1. FALSE
2. The Correct answer is option C

Explanation:

• An Ethernet crossover cable, also known as a crossed cable, connects two Ethernet network devices. These cables support temporary host-to-host networking in situations where an intermediate device, such as a network router, is not present. Crossover cables look almost identical to ordinary, straight-through (or patch) Ethernet cables, but the internal wiring structures are different.
• An ordinary patch cable connects different types of devices, for example, a computer and a network switch. A crossover cable connects two devices of the same type. You can wire the ends of a patch cable in any way as long as both ends are identical. Compared to straight-through Ethernet cables, the internal wiring of a crossover cable reverses the transmit and receive signals.
• Crossover Ethernet Cable has got both its ends identical to each other.-FALSE
• Infrared radiation, the visible light, and ultraviolet radiation are the forms of electromagnetic radiation exploited under optical wireless transmission and communication technologies. Otherwise known as free-space optics, these technologies are direct alternatives to wired optical communication systems such as optical fiber cable systems and radio-based wireless communication.
• The use of infrared is one of the earliest and most common modes of free-space optics. Home appliances such as televisions with remote controls are a notable demonstration of this technology. These remotes are equipped with low-powered infrared transmitters to establish a single-point one-to-one communication with receiver-equipped appliances.
• Infrared networking is another application in which wireless connectivity that is similar to radio-based wireless local area networking is established with two or more devices equipped with infrared transmitters and receivers. Although this system is very limited than radio-based systems because infrared depends on line-of-sight and cannot pass through walls, they offer more security against listening devices.
• Using visible light and ultraviolet radiation as modes of wireless transmission and communication have also been proposed and tested. For example, a networked visible light communication system called Light Fidelity or Li-Fi has been positioned as a modern alternative to Wi-Fi. Proposed iterations to the Li-Fi technology include the use of infrared and ultraviolet. Once developed, the technology can supplement or replace existing Wi-Fi systems. Note that Li-Fi has several advantages over Wi-Fi, as well as key disadvantages.

More information about transmission medium

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