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jekas [21]
2 years ago
7

What are some reasons DNS is necessary? Check all that apply. A. It maps local addresses to simple names without editing hosts f

iles. B. It makes Internet website IP addresses accessible with human readable domain names. C. It simplifies remote access. D. It improves network throughput.
Computers and Technology
1 answer:
dsp732 years ago
3 0
Domain Name Servers (DNS) are certainly necessary for easy access of resources across a network. The applicable options of the above are A and B - below are explanations as to why.

A: Computers generally are set to automatically obtain DNS information from the network they are connected to or can be pointed to a specific DNS server. This allows for records of where resources (network attach storage devices, other computers on local network, or even website server details) are located on a “master” kind of list so that the local machine’s host file does not have to be routinely updated to contain new addresses.

B: DNS, as explained partially by the answer to A, maintains a type-able or “human readable” domain name for the actual server’s IP address so we don’t have to memorize or keep a list of IPs for where we want to visit on the web (although, Google’s 8.8.8.8 IP address does make it easy). It shows an association between a name/domain name and an IP address so that we can enter something simple (Google.com) and the computer knows where to go (the server at IP address 8.8.8.8) so it can show you the content you want to see.

C: DNS would only simplify remote access if your were attempting LAN (Local Area Network) remote access of another computer on your network. DNS would not make it easier for remote access of a computer on the internet, as most DNS used in non-commercial settings are created and maintained by third-parties that will not put a specific record for one of your computers in it - not that you would want them to either, since it could lead to an open cyber attack.

D: Network throughput is a fancy phrase for network speed. It could be possible that different DNS servers could process requests faster than others, but it is not likely to increase network speed on the whole as navigating via IP or DNS records will be relatively the same speed.
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Rudik [331]

Answer:

Given,

P = (22, 1, 42, 10)

Q = (20, 0, 36, 8)

a. Formula for Euclidean Distance :

distance = ((p1-q1)^2 + (p2-q2)^2 + ... + (pn-qn)^2)^(1/2)

Now,

distance = ( (22-20)^2 + (1-0)^2 + (42 - 36)^2 + (10-8)^2) ) ^(1/2)

=( (2)^2 + (1)^2 + (6)^2 + (2)^2 ) ) ^(1/2)

=(4+1+36+4)^(1/2)

=45^(1/2)

Distance = 6.7082

b.Manhattan distance :

d = |x1 - x2| + |y1 - y2|

d = |22- 20| + |1 - 0|

d = |2| + |1|

Explanation:

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Explanation:

8 0
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What mistake might you make related to changing the data in a cell that's used in a formula?
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Answer:

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To set up scenarios, you need to first use ______ to set up a list, then ______ to set up the reference cell. Last you need to u
Sholpan [36]

To set up scenarios, you need to first use Goal seek to set up a list, then data table  to set up the reference cell. Last you need to use  VLOOKUP to set up the cells that display the output results from the scenario.

<h3>What is a Goal Seek in Excel?</h3>

Microsoft Excel is known to have a goal seeking tool that is said to be built-in and it is one that gives room for the user to know the desired input value for any kind of  formula if the output value is said to be already known.

Hence, To set up scenarios, you need to first use Goal seek to set up a list, then data table  to set up the reference cell. Last you need to use  VLOOKUP to set up the cells that display the output results from the scenario.

See full question below

To set up scenarios, you need to first use to set up a list, then to set up the reference cell. Last you need to use to set up the cells that display the output results from the scenario. CHOOSE; VLOOKUP; data table Goal seek; data table; VLOOKUP Data validation; VLOOKUP; CHOOSE Data table; VLOOKUP;

Learn more about  VLOOKUP from

brainly.com/question/14042837

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