Case-Based Critical Thinking QuestionsCase 4-1Leon works at his company's Help Desk. He is getting many questions regarding new software installation and access problems. Here are some of them. I got a message "Access to online application denied." Which of the following is the most frequent reason for that?
A. The Web site is down.
B. Your user ID and password do not match the one stored in your account information.
C. You do not have an Internet connection.
D. The file is corrupted.
Answer: B
You might also like to view...
Answer the following questions with reference to how the ER model in Figure 17.13 maps to relational tables.
The ER diagram in Figure 17.13 shows only entities and primary key attributes. The absence of recognisable named entities or relationships is to emphasize the rule-based nature of the mapping rules described in Step 2.1 of logical database design.
(a) How many relations will represent the ER model?
(b) How many foreign primary keys are mapped to the relation representing X?
(c) Which relation(s) will have no foreign key?
(d) Using only the letter identifier for each entity, provide appropriate names for the relations mapped from the ER model.
(e) If the cardinality for each relationship is changed to one-to-one with total participation for all entities; how many relations would be derived from this version of the ER model?
The component of a digital computer that can compare data stored in its registers is the __________.
a. arithmetic logic unit b. logical comparison unit c. cable Internet access d. register bank e. central logic unit
A vector graphic image can be thought of as a paint-by-number image
Indicate whether the statement is true or false
Briefly describe how SmartArt uses visual elements to communicate information on an Excel worksheet.
What will be an ideal response?