Please answer the following with one or two sentences.

1. Why is it a good idea to examine network traffic? Recognize unusual traffic by monitoring the inflow and outflow of network data. 2. What is the "attack surface" of a computer? Sum of the different points where an unauthorized user can try to enter or extract data 3 Fooling a person to do something wrong is often easier than breaking into their system. What is the best activity to decrease being fooled? A host needs to send an IP packet to a host on the same network but does not know the target host's MAC address. What protocol should be used to find the target's ethernet MAC address? 4. 5. Is a "perimeter defense" sufficient to protect the enterprise network? (yeso) Why, i.e. support your answer? 6. On a Linux system, what command can tell you the system's IP address? 7. Vulnerability scanners must be loaded with thousands of data items? What are these items? 8. Software often has bugs. And bugs are sometimes a security vulnerability. What is the best thing that can be done to a system to decrease these vulnerabilities? 9. Why are VPNs valuable inside an enterprise network? 10. What tool allows us to interactively examine network traffic? I l. What is social engineering? 12. An operator or engineer has sent you a pcap file containing some suspect traffic. How would you examine this traffic