What are the problems with depending on ping sweeps to find out which hosts are "live"?
What will be an ideal response?
To find out which hosts are "live," ping sweeps simply ping a range of IP addresses and see what type of response is returned. The problem with relying on ping sweeps to identify live hosts is that a computer might be shut down at the time of the sweep, indicating that the IP address does not belong to a live host. Another problem with ping sweeps is that many network administrators configure nodes not to respond to an ICMP Echo Request (type 8) with an ICMP Echo Reply (type 0). This doesn't mean the computer isn't alive; it just means it isn't replying to the attack computer at that moment. Add to that the possibility of a firewall filtering out ICMP traffic, and you have many reasons for using caution when running ping sweeps.
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Match the following terms to their meanings:
I. Any software that intentionally does harm to computers A. dual core II. Data handling capacity of a PC dealing with data group size B. malware III. Program that records your keystrokes or looks at your hard drive C. architecture IV. A benchmark that measures overall CPU performance D. spyware V. Processor type that has two separate CPU units E. P-rating
What is a scheme perpetrated over the Internet or by email that tricks a victim into voluntarily and knowingly giving money or property to a person?
a. Phishing b. Pharming c. Computer fraud