In Dreamweaver, the ____ is the main workspace where you create and edit a Web page.
A. Document window
B. Document Toolbar
C. Site panel
D. Main window
Answer: A
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A two-dimensional array of characters can contain
a. strings of the same length b. strings of different lengths c. uninitialized elements d. All of these e. None of these
Suppose the file is not ordered by the non-key field DEPARTMENTCODE and we want to construct a secondary index on SSN using Option 3 of Section 18.1.3, with an extra level of indirection that stores record pointers. Assume there are 1000 distinct values of DEPARTMENTCODE, and that the EMPLOYEE records are evenly distributed among these values. Calculate (i) the index blocking factor bfr i (which is also the index fan-out fo); (ii) the number of blocks needed by the level of indirection that stores record pointers; (iii) the number of first-level index entries and the number of first-level index blocks; (iv) the number of levels needed if we make it a multi-level index; (v) the total number of blocks required by the multi-level index and the blocks used in the extra level of indirection; an
Consider a disk with block size B=512 bytes. A block pointer is P=6 bytes long, and a record pointer is P R =7 bytes long. A file has r=30,000 EMPLOYEE records of fixed-length. Each record has the following fields: NAME (30 bytes), SSN (9 bytes), DEPARTMENTCODE (9 bytes), ADDRESS (40 bytes), PHONE (9 bytes), BIRTHDATE (8 bytes), SEX (1 byte), JOBCODE (4 bytes), SALARY (4 bytes, real number). An additional byte is used as a deletion marker.
Of the following, which is the fastest category of UTP cabling?
A. CAT5 B. CAT3 C. CAT5e D. CAT6
Which of the following refers to the case that contains and protects the motherboard?
A. memory manager B. CP case C. system unit D. encapsulator