While modifying a disk image within VirtualBox, what mode allows for multiple virtual machines to share a single disk image at the same time, as well as store the changes unique to each VM?

A. Normal mode
B. Writethrough mode
C. Shareable mode
D. Multi-attach mode


Answer: D

Computer Science & Information Technology

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which returns the number of employees whose age is 27, and the other contains the single UPDATE statement

The granular locking protocol can exhibit a deadlock between two transactions, one of which executes a single SELECT statement and the other a single UPDATE statement. For example, suppose that one transaction contains the single SELECT statement

SELECT COUNT (P.Id)
FROM Employee P
WHERE P.Age = ’27’
UPDATE Employee
SET Salary = Salary * 1.1
WHERE Department = ’Adm’
which gives all employees in the administration a 10% raise. Assume that there are indices on both Department and Age and that the tuples corresponding to the department Adm are stored in more than one page as are those corresponding to age 27. Showhowa deadlock might occur at isolation levels other than READ UNCOMMITTED.

Computer Science & Information Technology

Button names begin with btn.

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

Computer Science & Information Technology

To specify the position of a Web control, set the ________ and _______ values of the ________ attribute.

a) X, Y, style b) X, Y, position c) TOP, LEFT, style d) TOP, LEFT, position

Computer Science & Information Technology

A ________ chart is useful in comparing values across categories

A) clustered bar B) scatter C) line D) pie

Computer Science & Information Technology