Refer to the exhibit. Which of the pictured software is a port scanner?
What will be an ideal response?
Answer: A port scanner is an application designed to probe a server or host for open transport layer ports. This is often used by administrators to verify security policies of their networks and by attackers to identify network services running on a host and exploit vulnerabilities. A port scanner will indicate open ports on specific servers (IP addresses) as well as those that are blocked.
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The term ____ implies that the type's data can be accessed only through methods.
A. abstract type B. data type C. abstract data type D. object data type
________ validation helps to make sure that incorrect information is not entered in a field
Fill in the blank(s) with correct word
What is the value when Excel calculate the average of three cells with values of 10, blank, and 8?
A. 6 B. 9 C. 10 D. none; Excel cannot calculate an average in a range that includes a blank cell
When all statements in a high-level source program are translated as a complete unit before any statement is executed, the program doing the translation is called a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).