VPNs create a _____________ to transport information through public communications media.

Fill in the blank(s) with the appropriate word(s).


tunnel

Computer Science & Information Technology

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Each macro within a macro group must have the same name.

Answer the following statement true (T) or false (F)

Computer Science & Information Technology

A(n) ____________________ spreads by sending itself to every address in the address book of an infected computer.

Fill in the blank(s) with the appropriate word(s).

Computer Science & Information Technology

The table Faculty has 60,000 rows, each row occupies 100 bytes, and the database page size is 4 k bytes. Assuming pages in the index and data ?les are 100% occupied, estimate the number of page transfers required for the following SELECT statement in each of the cases listed below.

``` SELECT F.DeptId FROM Facu lty F WHERE F.Id = ’111111111’ ``` a. The table has no index. b. The table has a clustered B+ tree index on Id. Assume a (nonleaf) index entry has 20 characters. c. The table has an unclustered B+ tree index on Id. Assume a (nonleaf) index entry has 20 characters. d. The table has an unclustered B+ tree index on (Id, DeptId). Assume that an index entry now has 25 characters. e. The table has an unclustered B+ tree index on (DeptId, Id). Assume that an index entry now has 25 characters.

Computer Science & Information Technology

A relational database is a collection of ____________________.

Fill in the blank(s) with the appropriate word(s).

Computer Science & Information Technology