What is a subtractive color model? How does it differ from additive color models?
What will be an ideal response?
A subtractive color model describes reflective objects as contrasted with an additive color model, which describes objects that emit light. When mixing two colors together in a subtractive color model, the result is a darker color, but in an additive system, the result is a lighter color.
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Which of the following statements is true of a database?
A. It is accessed primarily for use by an organization's database administrator and data administrator. B. It provides an essential foundation for an organization's knowledge management and artificial intelligence systems. C. It is a collection of unstructured data. D. It helps companies analyze information to open new market opportunities.
Include the IP source address and IP destination address from the IP header data of an ICMP Echo Request and the corresponding ICMP Echo Reply packet before and after it passes through Router2.
What will be an ideal response?
Create an XML document and an XML Schema for the Hotel Schema given in the Exercises at the end of Chapter 4. Now attempt to write XQuery expressions for Exercises 6.7 – 6.26.
6.7 List full details of all hotels. 6.8 List full details of all hotels in London. 6.10 List all double or family rooms with a price below £40.00 per night, in ascending order of price. 6.12 How many hotels are there? 6.13 What is the average price of a room? 6.14 What is the total revenue per night from all double rooms? 6.15 How many different guests have made bookings for August? 6.16 List the price and type of all rooms at the Grosvenor Hotel. 6.17 List all guests currently staying at the Grosvenor Hotel. 6.22 List the number of rooms in each hotel. 6.23 List the number of rooms in each hotel in London.
?Andrea, an event manager, is drafting a list of guests to invite for an event. In an Access database, she has the addresses of all the guests but not their names, which are needed for the guest list. To make sure the guests without names are included in the mail merge, Andrea should use the:
A. ?Insert Address Block Field button and choose to replace the first field. B. ?invalid recipient dropdown menu in the Greeting Line dialog box C. ?Create from File button to create a custom field for recipients D. ?Insert Merge Field button to insert a field in the document