1. Blind carbon copy is the extended form of BCC used in e-mail communication.

2. It is used to send a copy of an email to a person without informing the recipient about it i.e. the identity of the recipient mentioned in the 'Bcc field' is hidden from other recipients receiving the same email.

3. Recipients in the BCC list can see every other email address, including the To and CC lists.

1. The operating system runs on computer hardware and provides the platform to run other software.

2. The computer takes the help of various devices and programs to do its work. There is a separate and special computer program to handle these devices and programs, this special master program is known as the operating system.

3. Operating System, in short form is called OS, is a computer program which operates other computer programs. The operating system acts as an intermediary between users and the computer system. It explains our instructions to the computer. Other software programs and hardware are operated through the operating system.

There is a table in MS Excel which contains numbers from 0 to 10. If you have to add numbers greater than 5 in that table, then the formula =SUMIF (A2:A8,”>0″) is suitable.

1. PPI (pixels per inch) refers to display resolution, or, how many individual pixels are displayed in one inch of a digital image.

2. DPI (dots per inch) refers to printer resolution, or, the number of dots of ink on a printed image.

3. The physical size of an image refers to the dimensions in which it will print (ex: 8.5" x 11") or the pixel dimensions of an image displayed on the web (ex: 600 pixels x 800 pixels).

1. In MS Excel 2010, the address of the topmost cell is Al.

2. Microsoft Excel is a commercial spreadsheet application written and distributed by Microsoft for Microsoft Windows and Mac OS X.

3. Microsoft Excel is a spreadsheet tool capable of performing calculations, analyzing data, and integrating information from different programs.

The following e-mail fields are given, when 'D' receives the message he will see the following e-mail addresses-
A@lest.com; b@test.com; C@test.com.

1. MS to monitor all changes in the document. Track Changes features are used in Word 2010.

2. Track Changes is a way for Microsoft Word to keep track of changes you make to your text.