A hypothetical disk drive had the following parameters. The seek time for a short seek is given as 1 + 0.2?n ms, and the seek time for a long seek is 3 + 0.003n ms. Assume that short seeks are less than 200 tracks. Suppose the drive accesses the following track numbers sequentially. What is the approximate seek time required (neglecting rotational latency).
1234, 1235, 1237, 1200, 2456, 2470, 1240, 1242, 100, 2120.
What will be an ideal response?
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What will be an ideal response?
Which of the following is used to define an image map's hot zones?
A.
B.
Identify the letter of the choice that best matches the phrase or definition.
A. A working model of the proposed system's essential functionality. B. Verifies that each individual program or object works by itself. C. Verifies that all programs in an application work together properly. D. Verifies that an application works with other applications. E. Performed by end users and checks the new system to ensure that it workswith actual data. F. Information that has meaning to the person who receives it. G. The collection and summarization of data, information, and deliverables. H. What each byte represents in ASCII. I. A group of related fields. J. A field that uniquely identifies each record in a file. K. Has special keywords and rules that users include in statements. L. What is done to a record so the DBMS will not process it again. M. This type of information can lead to incorrect decisions. N. Eight bits grouped together in a unit comprise this. O. While a user is working with the database, this resides in the memory of the computer. P. Kind of rules that decrease data entry errors, and thus enhance the data's integrity. Q. In addition to storing data, a relational database also stores these. R. This database capability is one of the more powerful database features. S. Whether designed for a small or large computer, most DBMSs perform common ones. T. The more errors the data contains, the lower this is.
If you have a long text entry, such as a paragraph, you can instruct Excel to _________________________ text in the cell.
Fill in the blank(s) with the appropriate word(s).