When Jim enters his organization's data center, he has to use a smart card and code to enter and is allowed through one set of doors. The first set of doors closes, and he must then use his card again to get through a second set, which locks behind him. What type of control is this, and what is it called?
A. A physical control; a one-way trapdoor
B. A logical control; a dual-swipe authorization
C. A directive control; a one-way access corridor
D. A preventive access control; a mantrap
Answer: D. A preventive access control; a mantrap
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What is the value of the expression that follows?
``` strcmp(“dog”, “dogs”); ``` a. -1 b. 0 c. 1 d. ‘s’ e. none of the above
Answer the following statements true (T) or false (F)
1. A variable of the char data type can hold up to 256 characters at a time. 2. Because char variables can hold only one character, they are not assignment-compatible with string variables. 3. String subscripts must be at least 0, and they must be less than the length of the string. 4. You can use a subscript expression such as name[3]='A' to change the value of a character within a string.