Question Discussion & Solution

The correct answer is Gigahertz.

Key Points

• The speed of the CPU is measured in Gigahertz.
  • A central processing unit or CPU enables your computer to interact with all of the applications and installed programmes.
  • CPU interprets the program’s instructions and creates the output that is the interface.
  • The performance of the CPU has a major effect on the speed at which programs run.
  • Clock speed (also “clock rate” or “frequency”) is an important attribute to measure the performance of a processor. 
  • A higher clock speed means a faster CPU.  
  • The CPU processes many instructions from different programs every second.
  • The clock speed measures the number of cycles the CPU executes per second.
    • ​It is measured in GHz (gigahertz).
  • A “cycle” is technically a pulse synchronized by an internal oscillator.
  • During each cycle, billions of transistors within the processor open and close.
  • A CPU with a clock speed of 3.2 GHz executes 3.2 billion cycles per second.  

The correct answer Firewall.

Key Points

• A firewall's main purpose is to prohibit unauthorized access to your computer via the Internet.
• In computing, a firewall is a network security system that monitors and controls the incoming and outgoing network traffic based on predetermined security rules.
• A firewall typically establishes a barrier between a trusted network and an untrusted network, such as the Internet.

Additional Information

• Tim Berners-Lee, a British scientist, invented the World Wide Web (WWW) in 1989 while working at CERN.
• The first web page address was http://info.cern.ch/hypertext/WWW/TheProject.html.
• ARPANET adopted TCP/IP on January 1, 1983.
• NCSA Mosaic ran on Windows computers was the first browser to surf the internet.

The correct answer is It should always begin with an = (equal) sign.

• Creating a formula in Excel
  • To create a simple formula to add, subtract, multiply or divide values in your worksheet
  • Simple formulas always start with an equal sign (=), followed by constants that are numeric values and calculation operators such as plus (+), minus (-), an asterisk(*), or forward-slash (/).
• MS-Excel
  • It is a spreadsheet program for data analysis and documentation.
  • It contains a number of rows and columns, where the intersection of a column and cell and a row is a "cell".
  • Each cell contains one point of data.
  • It is developed by Microsoft.
  • It features calculation, graphing tools, pivot tables.

• All Excel formulas begin with an equal to sign (=)
• After the equal symbol, you enter either a calculation or function
• For example, to add up values in cells B1 through B5, you can either:
  • Type the entire equation: = B1+B2+B3+B4+B5
  • Use the SUM function: = SUM(B1: B5)
  • Press the Enter key to complete the formula.

The correct answer is 14.

Key Points

• If the font size of a text in MS-Word 2016 document is 12.
• If we select the text and press CTRL+SHIFT+> once, then the font size of the text will be 14.
• Font sizes are measured in points; 1 point (abbreviated pt) is equal to 1/72 of an inch.
• The default size increase in MS word is two points. 
• The point size refers to the height of a character.
• Thus, a 12-pt font is 1/6 inch in height.

Additional Information

• Microsoft Word uses the Calibri font and 11 point font size by default. 
• To increase the font size, press Ctrl + ] . (Press and hold the Ctrl, then press the right bracket key.)
• To decrease the font size, press Ctrl + [.

The correct answer is option 5, i.e. File Transfer Protocol.

• FTP - File Transfer Protocol
• It is a standard Internet protocol for transmitting files between computers on the Internet over TCP/IP connections.
• It is a client-server model architecture or protocol.
• Using FTP, a client can upload, download, delete, rename, move and copy files on a server.