Describe the relationship between the service data unit (SDU) and protocol data unit (PDU).
What will be an ideal response?
At each OSI layer,an SDU is encapsulated with control and transfer information to form a PDU. After the PDU is formed at a particular layer on computer A, for instance, it is then sent to the same layer on computer B. Also, if the layered communications are going down the stack on computer A, for example, then the PDU is sent to the next lower layer in the stack. The control and transfer information is stripped out of the PDU to leave only the SDU. That layer then adds control and transfer information.
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What will be displayed as a result of executing the following code?
``` int x = 6; String msg = "I am enjoying this class."; String msg1 = msg.toUpperCase(); String msg2 = msg.toLowerCase(); char ltr = msg.charAt(x); int strSize = msg.length(); System.out.println(msg); System.out.println(msg1); System.out.println(msg2); System.out.println("Character at index x = " + ltr); System.out.println("msg has " + strSize + "characters."); ``` a. I am enjoying this class. I AM ENJOYING THIS CLASS. i am enjoying this class. Character at index x = e msg has 24 characters. b. I am enjoying this class. I AM ENJOYING THIS CLASS. i am enjoying this class. Character at index x = e msg has 25 characters. c. I am enjoying this class. I AM ENJOYING THIS CLASS. i am enjoying this class. Character at index x = n msg has 24 characters. d. I am enjoying this class. I AM ENJOYING THIS CLASS. i am enjoying this class. Character at index x = n msg has 25characters.
An algorithm has liner time complexity and can process an input of size n in a certain amount of time. If the algorithm runs on a computer that has a processor that is 5 times as fast, how large of an input can be processed in the same amount of time?
a) n + 5 b) 5n c) n / 5 d) e)
Storing the options used in a lookup field in a separate table makes adding options easier
Indicate whether the statement is true or false
The ____________________ substitution-based cipher uses multiple alphabetic strings to encode the plaintext, rather than one alphabetic string.?
Fill in the blank(s) with the appropriate word(s).