Need asap! brainliest and 20 pts to correct answer!

crystal detected a problem in a computer network, due to which she could not send or receive data within the network. she pings computers from the administrator computer. which problem is she trying to detect?

a. incorrect password
b. same ip address of two computers
c. faulty network interface card (nic)
d. erroneous changes in the configuration settings

In which part of a professional email should you try to be brief, but highly descriptive?

Rafael needs to add a title row to a table that he has inserted in word. what should he do? use the alignment options. use the merge and center option for all the cells in the top row. use the merge and center option on the first two cells in the top row. none of the above

What makes myhexadecimalnumber a child of mynumber? which methods does myhexadecimalnumber inherit directly from the mynumber class? what can an instance of the mynumber class do? what can an instance of the myhexadecimalnumber class do? which methods are overridden? why are they overridden? how many examples of overloading are there? why was this done? where is the super keyword used? what is it doing? why isn’t the incoming value set immediately in the second myhexadecimalnumber constructor? how many examples can you find of an inherited method being called?