Which describes the natural loss of signal strength through space?
A. scattering
B. absorption
C. free space loss
D. delay spread
Answer: C
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What is wrong with the following while loop?
while ( sum <= 1000 ) sum = sum – 30; a. The parentheses should be braces. b. Braces are required around sum = sum – 30;. c. There should be a semicolon after while ( sum <= 1000 ). d. sum = sum – 30 should be sum = sum + 30 or else the loop may never end.
Match each term with the correct statement below.
A. Activities specified for a given employee as part of their work assignment B. The ability to perform a given set of tasks or execute a given behavior C. The activities that ensure the overall security of the system during routine operation D. A level of security practice in which the organization informally acknowledges a set of defined practices for security E. A formal statement of the recommended approach to a given task or job requirement F. Assignment of specific responsibility to carry out a particular task or perform a specified behavior G. A level of security practice where all organizational decisions about security practice are based on data H. The specific measures that will be taken to ensure compliance with a given requirement I. A level of security practice in which the organization generally recognizes the need for security
Answer the following statements true (T) or false (F)
1. When a text file is created in Visual Basic using a StreamWriter, the extension .txt is automatically added to the file name if no other extension is specified. 2. In the following statement, sw is the name of a variable. ``` Dim sw As IO.StreamWriter = _ IO.File.CreateText("C:\TEXT FILES\INCOME Data.txt") 3. If an existing text file is opened for output, the computer will append any new data to the end of this existing file. 4. If the value of IO.File.Exists(filespec) is True, then the specified file exists. 5. An individual item of a text file cannot be changed or deleted directly. ```
The keyboard short-cut to Copy a graphic is
A) Ctrl+X. B) Ctrl+Z. C) Ctrl+C. D) Ctrl+V.