Out of the following, the only one that I see is not the basic role of a webmaster is replying to customers questions about the web site! Usually they have a specific job for that; like customer service etc. Hopefully that helps.
Answer:
the difficulty in factoring large numbers
a public key that the server and the user’s computer know
the use of prime numbers
a private key that only the server knows
Explanation:
ege 2021
Answer: They connect to a mobile switching center.
Explanation:
The mobile switching center links all the wireless base stations to other earth stations with the help of repeaters. This process allows them to transmit and receive data and hence communicate through the medium of air.
Therefore, in a cellular network each wireless base station connect to a mobile switching center.

Hi pupil here is your answer :::
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Your question :》 Which options are available when a user modifies a recurring appointment? check all that apply.
The answer is => A Open this occurenceand the option D Open the series are the option that shows from the dailog box that shows when attempting to modify the appointments .
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Hope this helps .........