Which of the following is not a key organization in the open-source community?

A system administrator is configuring a site-to-site VPN tunnel.Which of the following should be configured on the VPN concentrator during the IKE phase?

A. RIPEMD B. ECDHE C. Diffie-Hellman D. HTTPS

If a file did not open correctly, you should

a. continue on anyway b. display an error message and continue on c. display an error message and take some suitable action such as exit d. exit the program immediately