1. Example of cell address in MS Excel 2010 is AZ145.

1. Which of the following formulas is a feature in Microsoft Excel that is used to perform calculations on data in a spreadsheet?

2. A formula is a special type of formula used to add, subtract, multiply, and divide numbers, text, and other data.

3. LANPAR, the first electronic spreadsheet on mainframe and time-sharing computers, was developed in the year 1969.

1. A website is a collection of web pages.

2. A website (also written as a website) is a collection of web pages and related content identified by a common domain name and published on at least one web server.

3. A group of related web pages makes up a website.

4. Some examples of a website include-

- News websites, such as CNN.com and BBC.com

- E-commerce websites, such as Amazon.com and eBay.com

- Social media websites, such as Facebook.com and Twitter.com

- Personal websites, such as About.me and Blogger.com

The following method is used to close the file of MS PowerPoint 2010.

- Click on the File tab and then click on the Close option.

- You can click on the close button appearing on the top right side of the window.

- The keyboard shortcut Ctrl + W can be used.

1. The full form of USB is Universal Serial Bus.

2. USB is a wired device with the help of which you can connect any other device like mobile with laptop, mobile with computer etc.

3. Apart from this, you can also insert a memory card inside the laptop with its help because it is a port in which we can insert things like Pendrive, Card Reader, Data Cable etc.

1. IP address (Internet Protocol address) is a digital address used to identify a computer or device on the Internet or any other network.

2. IP address is a set of four numbers. It is in this format 191.150.1.38. Is visible in. The set of numbers for an IP address ranges from 0 to 255. That means the IP address ranges from 0.0.0.0 to 255.255.255.255.

1. Optical fibres use total internal reflection to transfer data. The primary condition for total internal reflection is that the signal must travel from an optically denser medium to an optically rarer medium. Secondly, the angle of incidence must be greater than the critical angle.

1. Press the F5 key to start the presentation slide show.

2. View Show option is selected from the Slide Show menu to start the slide show of the presentation.

3. Shift+F5: Starts the slide show from the current slide.