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

What is transmission control protocol/internet protocol (tcp/ip)? software that prevents direct communication between a sending and receiving computer and is used to monitor packets for security reasons a standard that specifies the format of data as well as the rules to be followed during transmission a simple network protocol that allows the transfer of files between two computers on the internet a standard internet protocol that provides the technical foundation for the public internet as well as for large numbers of private networks