The best description of a computer virus is. Someone first starts out making a malicious program, then can send it to a unexpected user. After that, when the user opens the malicious program, it can do negative things on the target. The virus first starts out in the system32, then infects a random file type for example, exe files, or dlls etc. Then random errors can pop up on the computer saying "YOUR COMPUTER IS UNDER RISK! CALL THIS NUMBER NOW! 555-555-5555" and the options of the error, can direct you to a website, that can give you another virus. To get rid of a virus, you have to ignore the popups that comes onto your computer, and get a strong antivirus like avast, or avg. Then let it scan the system. After when the scan is done, it will show up the virus, and it will give you options "to delete virus or ignore it" you would hit delete. I hope this answer helped you. Let me know if you have any more questions! Thanks!
Answer:
Explanation:
Network Access Control is needed to make sure that only set of verified users access the network.
It makes sure that the users are authenticated and only set of some verified users have access to network.
Set of NAC solutions like Impulse SafeConnect, Extreme Networks, ExtremeControl, Auconet BICS, ForeScout CounterACT, Pulse Policy Secure could be installed in the system which along with basic profiling will make sure authenticated access to the network.
Other than this basic encryption-decryption algorithm can be used in this regard. Network components could use encryption algorithms like RSA and DES. These algorithms will make sure that the information from database side is well encrypted. Once that information goes to the network component. They can decrypt the encryption by generating relevant key using the same algorithm.
This will only allow authentic users to access information and also it will stop the leakage of information in between the transmission because of encryption.
Answer:
An FPGA is a field programmable gate array. It could be "programmed" to do certain task, but don't mistake it with a microprocessor. When programming an FPGA, you're actually changing it's physical structure, the logic gates inside the FPGA, to do the task for you. Therefore, unlike a microprocessor which has to run through a series of command, an FPGA could be rewired to run at a much faster and more efficient rate.
FPGA is good for testbenching and are budget friendly since they can be reprogrammed over and over again in case you messed up. However, they can be quite big and bulky, so they are not suitable for mass production.
ASIC in the other hand can be compact to a small size. ASIC are pretty much the IC chips that you use, like your Intel CPU or LM7000 series chips. However, the process of making them that small is irreversible, so if you messed up, you gotta throw away the whole batch. This make them expensive to make, but their small size and production process allows them to be made in bulk.
Both FPGA and ASIC are good for power consumption and speed because you're actually designing their physical circuit layout, so if your design is efficient then the product will be efficient in both speed and power as well.
In Summary, you design and test your circuit using an FPGA first. Then you send that design to a production company and they will use that design to mass produce it as a small chip.
Answer:
a 1-2 page document that demonstrates why you are qualified for a job by summarizing your skills, education, and experience.
The received power will be 1.243 nW
We're given:
frequency 
= 150MHz
distance of the receiver 
= 32.2 km=32200m
Power of transmitter 
= 3W
Antenna gain = 8dB
To find :
Power received 
where 
is transmit gain and 
is receive gain as refrenced to isotropic source
⇒wavelength 
where c is the speed of the light
⇒ 
( value of 
= 1.64)
Now,
Antenna gain
( in decibals)
⇒
⇒
⇒ considering isotropic receiver
⇒
( =1.64)
Now , using the formula
Hence The received power will be 1.243 nW
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