Answer:
Firewalls
Explanation:
A firewall is simply a network security system whose main duty is. to prevent unwanted access to. private network.
Firewalls is measures to protect your computer against threats from human actions.
It is also the one singular thing that prevents you from accessing the file on your friends system.
The answer is a) It improves upon the two-phased commit by requiring that locks be acquired at the start of a transaction.
Reason: The 3PC is an extension or you can say developed from 2PC that avoids blocking of an operation. It just ensures that first n sites have intended to commit a transaction that means it acquires commits or locks before the start of any transaction to avoid any blocking.
Option b) is wrong as it does not allow coordination, it just let all the other sites do their transaction if any other site is blocked, so no coordination is there between sites that they will wait till their coordinator is corrected.
Option c) is wrong as lock operations are shared between other connections as when their coordinator fails, the new coordinator agrees to the old coordinator that they had shared locks before and they can start their transaction.
Option d) is wrong as option a) is correct.
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Wow!! that is ALOT of info,I dont think i could help with this one Umders 699 maybe someone else can sorry that i couldn`t help :)
You are required by law to stop twenty feet away from a school bus when driving.
The best way for an end user to visualize a highly complex 3D model using a Virtual Reality headset is to: A) use any headset and increase the bandwidth of the Wi-Fi connection.
<h3>What is Virtual Reality (VR)?</h3>
Virtual Reality (VR) can be defined as a computer technology through which virtual images of any physical environment (realities) and human-machine interactions are displayed, especially through the use of various computer technologies and wearables.
<h3>The elements of Virtual Reality (VR).</h3>
Some of the elements of Virtual Reality (VR) include the following:
In this context, we can infer and logically deduce that Virtual reality is a computer technology which is designed and developed to simulate a three-dimensional (3D) environment through which end users can explore and interact.
In conclusion, the best way for an end user to visualize a highly complex three-dimensional (3D) model using a Virtual Reality headset is to use any headset and increase the bandwidth of the Wi-Fi connection.
Read more on Virtual Reality here: brainly.com/question/26705841
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