Examine the graphic with current configurations. Host A in the Clerical offices failed and was replaced. Although a ping to 127.0.0.1 was successful, the replacement computer can not access the company network. What is the likely cause of the problem?

Since the ping to 127.0.0.1 (loopback) is successful, the TCP/IP stack is properly installed and functioning. However, inability to access the company network despite successful loopback suggests a subnet mask misconfiguration. An incorrect subnet mask causes the host to miscalculate which IP addresses are on the local subnet versus remote networks, leading to incorrect routing decisions. IP address being wrong would cause different errors, unplugged cables wouldn't allow loopback success, and network card failure would prevent loopback from working.