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.
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.
they send electrical signals to the buzzer. The buzzer changes those electrical signals into sound. You hear the buzzer sound and know that someone is calling you.
"The type of the software which a user wants to use" is a consideration point for the amount of ram while purchasing the computer system.
Explanation:
The Ram is primary memory, which is used when the system is in on mode. When there is less amount of Ram, then the user of the computers can not able to run multiple programs or runs that type of program which consumes more memory.
And if there is a high amount of RAM memory, then the user can run multiple programs at the same time or can run that program which takes more memory.
So when any user wants to decide about the Ram, then he can by deciding the type of software, which he wants to use. How much that software can use the memory.
