The abbreviation used for a resolution specified in pixels per inch is ____.
a. pix
b. pixl
c. ppi
d. pin
c. ppi
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_____________ is a logical unit of the computer that sends information which has already been processed by the computer to various devices so that it may be used outside the computer
What will be an ideal response?
Responsive sites usepcas their unit of measurement.?
Answer the following statement true (T) or false (F)
____ software is designed to detect and remove viruses that have infected your memory, disks, or operating system.?
A. ?Antivirus B. ?Remote access C. ?Uninstall D. ?Backup
Suppose the file is ordered by the key field SSN and we want to construct a primary index on SSN. Calculate (i) the index blocking factor bfr i (which is also the index fan-out fo); (ii) the number of first-level index entries and the number of first-level index blocks; (iii) the number of levels needed if we make it into a multi-level index; (iv) the total number of blocks required by the multi-level index; and (v) the number of block accesses needed to search for and retrieve a record from the file--given its SSN value--using the primary index.
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.