Answer:
Virtualization is the technology that is used to create virtual representation and version of the different devices like software, many storage devices and server.
It also help in organize the working framework where the structure isolates the asset into at least one execution situations.
The benefits of using the virtualization on the single machine are:
- The virtualization increased the productivity when it used in the cluster environment.
- We can able to access the different resources faster.
- The data center management is simple while using the virtualization in the cluster environment.
The drawback of using virtualization on single machine are:
- The virtual machine is less efficient as compared to the real machines.
- The virtual machine indirectly access the computer hardware system so that is why it is less efficient and also consume more power to run the system.
Answer and Explanation:
The benefit of circuit switching is that it has a specialized circuit without exchanging (guaranteed performance). Packet-Converting uses either TDM or FMD. TDM has the added benefit of being able to use most of the (multiplexing) bandwidth.
- It is the most recognizable method used to create a communication over network is circuit switching.
- It can be used for regular phone conversations.
- This enables people to share devices and circuits for conversation.
- Through network utilization, every user has an exclusive connection to a circuit.
1)The reason as to why scientists opt to transmit data at lower frequency instead of electromagnetic even if it can carry more data at a higher frequencies is because using higher frequencies of electromagnetic spectrum travel shorter distances but have higher data carrying capacity.So this physical characteristic of electromagnetic waves limits the range and availability of frequencies for sending information.
2) Limitations of using electromagnetic waves in sending communication
communication is a process of transmitting and receiving information in the form of signals.high technology communication use electromagnetic waves,there are various types of electromagnetic waves which are used in communication which include radio-waves,microwaves,infrared e.t.c some of their limitations are
i)Because there is limited number of broadcast frequencies the use of transmitters must be restricted in some way or they will seriously interfere with each other.
ii)Through the air signals can be distorted by atmospheric conditions and signals from space are sometimes distorted by solar activity
iii)physical activities such as mountains and buildings can prevent or interfere with some transmissions
iv)Through the air signals are not private,so any tuned receiver within the range can pick up them.
3)Differences between digital and analogue signals
Analogue and digital signal are used to transmit information usually through electric signals.
An analogue signal is continuous wave denoted by sine wave and may varry in signal strength (amplitude) or frequency(time) an example is sound from human voice is analogue because waves are continuous..
A digital signal is a signal in which the original information is converted into a string of bits before being transmitted .example a must for computer processing where is described as using (0s and 1s)and therefore can not take any fractional value.
4)Advantages of using digital signals over analogue signals
one advantage of digital signals are inherently less susceptible than analog signals to interference caused by noise because with digital signal it is not necessary to evaluate precise amplitude,frequency or phase.
Another advantage based in capacity is that digital signals carry more information per second than analogue signals.
Digital signals maintain their quality over long distances better than analogue signals.
5)How we use digital and analogue signals in our everyday live
digital signal processing is the way of life of current generation
example is mobile phones do alot of digital signal processing .they process our our speech digitally to remove background noise,echo e.t.c
Television also do a lot of digital processing of video,audio signal to present them in a better way.
How radio telescopes are used to explore space
A radio telescope is a specialized antenna and radio receiver used to receive radio waves from astronomical radio sources in the sky in radio astronomy.It has several main parts, a dish and antenna,a receiver,a detector and an analyzer.The dish collects the radio signals from space ad focuses them on the antenna.
6)How radio waves are used on earth
Radio waves are used to transmit television and radio programs They have longer wave lengths and are reflected by the ionosphere
7) Reasons why telescopes convert radio waves (analog) to electrical(digital) signals for analysis
This is because signals can be easily stored and transmitted in digital form.The analog is continuous in time and it is necessary to convert this to a flow of digital values.
Answer:
Yes. I do believe that having a positive attitude about our current situation helps with over coming the struggles of it all.
Explanation:
i once had a negative out look on this online school but now that we've reached the end (at my school I've recognized it wasn't too bad after all while doing the work I've learned it helps to listen to some music or watch an video or two from one of my favorite you-tubers and also talking to my friends through apps.
hope this helps.
