When importing a text file, ________ is a common file extension for files that are not fixed-length
A) pdf
B) csv
C) docx
D) rtf
B
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Answer the following statements true (T) or false (F)
1. Symmetric encryption remains by far the most widely used of the two types of encryption. 2. Rotor machines are sophisticated precomputer hardware devices that use substitution techniques. 3. Symmetric encryption is a form of cryptosystem in which encryption and decryption are performed using different keys. It is also known as non-conventional encryption. 4. With the use of symmetric encryption, the principal security problem is maintaining the secrecy of the key. 5. The process of converting from plaintext to ciphertext is known as deciphering or decryption.
Assume that the variable checkbox references a JCheckBox object. To determine whether the check box has been selected, use the following code:
A) if (isSelected(checkBox)) {/*code to execute, if selected*/} B) if (checkBox.isSelected()) {/*code to execute, if selected*/} C) if (checkBox) {/*code to execute, if selected*/} D) if (checkBox.doClick()) {/*code to execute, if selected*/}
The language ______ is a possible successor to HTML.
Fill in the blank(s) with the appropriate word(s).
The ____ layer of the TCP/IP model maps to both the Data Link and Physical layers of the OSI reference model.
A. Transport B. Internetwork C. Network Interface D. Application