A __________ is an enterprise facility that houses a large number of servers, storage devices, and network switches and equipment.

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


data center

Computer Science & Information Technology

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Create a movie that has two filled rectangles that move by a random amount in x and y (< 5 pixels) each time. Make sure that they don't go outside the picture.

What will be an ideal response?

Computer Science & Information Technology

Rewrite the class so that it throws appropriate exceptions instead of returning -1 as an error code. Write test code that attempts to withdraw and deposit invalid amounts and catches the exceptions that are thrown.

A method that returns a special error code can sometimes cause problems. The caller might ignore the error code or treat the error code as a valid return value. In this case it is better to throw an exception instead. The following class maintains an account balance and returns a special error code. ``` { private double balance; public Account() { balance = 0; } public Account(double initialDeposit) { balance = initialDeposit; } public double getBalance() { return balance; } // returns new balance or -1 if error public double deposit(double amount) { if (amount > 0) balance += amount; else return -1; // Code indicating error return balance; } // returns new balance or -1 if invalid amount public double withdraw(double amount) { if ((amount > balance) || (amount < 0)) return -1; else balance -= amount; return balance; } } ``` This solution throws a NegativeAmount and InsufficientBalance exception. It is worth pointing out to the students the problems that would occur if negative account balances were desirable.

Computer Science & Information Technology

When text data is imported into an Excel worksheet, characters from these cells can be extracted to create new data

Indicate whether the statement is true or false.

Computer Science & Information Technology

Most of today's microprocessors have several processors, or ________, inside a single chip.

A. cores B. controllers C. ports D. chipsets

Computer Science & Information Technology