Which of the following statements is false concerning PHP identifiers?
a. Identifiers cannot begin with a digit.
b. Identifiers can be of any length.
c. Identifiers are case insensitive.
d. Identifiers can have the same name as a function.
c. Identifiers are case insensitive.
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Suppose that a static hash file initially has 600 buckets in the primary area and that records are inserted that create an overflow area of 600 buckets. If we reorganize the hash file, we can assume that the overflow is eliminated. If the cost of reorganizing the file is the cost of the bucket transfers (reading and writing al of the buckets) and the only periodic file operation is the fetch operation, then how many times would we have to perform a fetch (successfully) to make the reorganization cost-effective? That is, the reorganization cost and subsequent search cost are less than the search cost before reorganization. Assume s=16, rd=8.3 ms, btt=1 ms.
What will be an ideal response?
The =________(serial_number) function displays the day within a given month for a date or its serial number
Fill in the blank(s) with correct word
Which of the following is an electronic device, operating under the control of instructions stored in its own memory, that can accept data, process the data according to specified rules, produce results, and store the results for future use?
A. input device B. computer C. output device D. both a and c
Which tag marks an HTML line break?
A. break B. lb/ C. break/ D. br/