Computer Software Operations

Trace Precedents is an Excel auditing tool that draws arrows from precedent cells to the selected cell. The keyboard shortcut is Ctrl+[ (Control+[), which selects all direct precedent cells. Options A, B, and D are incorrect - they do not correspond to Trace Precedents.

Ctrl+1 is the standard Excel shortcut to open the Format Cells dialog. This shortcut provides quick access to all cell formatting options.

In Excel, Ctrl+Shift+` (backtick/grave accent) applies the General number format to selected cells. This format displays numbers without specific formatting like decimal places or currency symbols. The shortcut uses the key to the left of the number 1 on standard keyboards.

Ctrl+Shift+4 applies the Currency format with two decimal places in Excel. This shortcut adds the currency symbol and ensures exactly two decimal places are displayed. The choice makes sense because the $ symbol appears on the same key as the number 4.

Ctrl+Shift+- (minus sign) removes all borders from selected cells in Excel. This is a quick way to clear cell borders without accessing the format menu. Note that Ctrl+Shift+7 does the opposite - it applies an outline border.

Ctrl+Shift+3 applies the date format with day-month-year (or your system's default date format) in Excel. This shortcut converts numbers to dates without decimal places. Ctrl+Shift+# would also work since # shares the same key as 3.

Ctrl+Shift+6 applies the Exponential (Scientific) number format in Excel. This displays numbers in scientific notation like 1.23E+10. The format is useful for very large or very small numbers and shows no decimal places in the default setting.

Ctrl+Shift+2 applies the time format in Excel, displaying values as hours:minutes or hours:minutes:seconds depending on your system settings. This shortcut is different from date formatting (Ctrl+Shift+3). The number 2 was chosen to distinguish it from the date shortcut.

Ctrl+Shift+1 applies the number format with two decimal places in Excel, using the thousands separator. This displays numbers like 1,234.56 with commas separating thousands. Ctrl+1 opens the Format Cells dialog but does not apply a specific format directly.

Ctrl+Shift+7 applies the outline border around selected cells in Excel. This adds a border on all outside edges of the selection. Note that Ctrl+Shift+- removes borders, while Ctrl+B applies bold formatting rather than borders.

In TMF (Testing Management Framework), the All Errors tab shows every error encountered during test execution. This is distinct from a general Errors tab which might show only current or filtered errors. The All Issues tab would include warnings as well.

In MSChange, to find the expected impact of a change, you click on the Impact tab. This is the most direct and logical path - the Impact tab would contain information about what systems or services will be affected. The Code tab would typically contain technical details or identifiers, Severity tab indicates urgency level, and None of the above is incorrect since the Impact tab exists.

CricketNet is a network monitoring tool that provides performance statistics and graphs for network devices such as routers, switches, and other infrastructure. Option A correctly describes its purpose. Option B is incorrect despite the name - it's not related to the sport of cricket. Option C is incorrect because CricketNet focuses on network devices, not servers.

In DOM event handling, onKeyDown returning false prevents the key-press event from firing. The event sequence is keydown → keypress → keyup, and canceling keydown stops the chain. Options C and D are wrong because onKeyDown doesn't affect key-up, which always fires when the key is released.

The command to open keyboard properties is 'control keyboard'. This opens the Keyboard tab in Control Panel. The other options ('keybrd', 'kb.ctl', 'keyboard.control') are not valid commands.