The network administrator suspects that packet sniffing is being used to capture data packets in the network.The network administrator is using an SSH connection for all critical applications,and switches are being used on all network connections.Should the network administrator be concerned?

No, the SSH connection is fully encrypted and this cannot be decoded. Yes, the SSH connection is not very strong and parts are in plain text. No, the time required to decode the SSH is too lengthy to be a threat. Yes, the network administrator should be concerned if someone is suspected of having internal access.