Exercise 2

1.          Define :

                a)             LAN (Local Area Network)                 

                b)            MAN (Local Area Network)               

                c)             WAN (Local Area Network)               

 2.          a)             Give one advantage of LAN               

                b)            State one disadvantage of WAN       

3.          The Internet is allowing greater flexibility in working hours and location, especially with the spread of unmetered high-speed connections and web applications.

a)       Define Internet.  

b)       There are two types of Internet connection; low speed and high speed. Give the example of the low speed Internet connection.       

c)       Give two (2) example of the common Internet Sevice Provider (ISP) in Malaysia.   

d)       Internet Protocol (IP) address is a unique set of numbers used to represent a computer or other devices on the Internet. Give one (1) example of IP address.                                                             

e)       Below is an example of Uniform Resource Locator (URL). Identify each portion of the URL.

                         http://www.jobstreet.com.my/programmer/intel.html

 4.          A Web Browser is an application software that allows users to access and view web pages.

a)       Give three (3) examples of web browser.                              

                b)    Differentiate between web page and home page.               

c)    Differentiate between Wiki and Blog.
d)    State the definition of netiquette.           

Exercise 1

Answer all questions         

1. Information technology is concerned with improvements in a variety of human and organizational problem-solving through the design, development, and use of technologically based systems and processes that enhance the efficiency and effectiveness of information in a variety of strategic, tactical, and operational situations.

(a)                 Define Information Technology                       

(b)                 Explain the evolution phases below.

(i)                   Cloud computing                                 

(ii)                 Client Server                                        

2.   In hexadecimal number system, what are the next 3 digit after 3F 

                a)            Convert 11010001100₂ to hexadecimal.  Show your work flow.               

b)           Convert A9₁₆ to binary.  Show your work flow.                                                

c)                   Convert 27₁₀ to binary.  Show your work flow.                                                

e)                   Convert 1101010101₂ to decimal numbers. Show your work flow.          

3.  Storage capacity refers to how much disk space that one or more storage devices provide. It measures the volume of data a computer system may contain.

(a)                 What is byte?                                                                                       

(b)                 How many bytes are there in a word “ COMPUTERS ” ?             

4.  a)  512 MB = _________ GB.   
     b)    In hexadecimal number system, state 3 numbers after AF.                                      
     c)   In decimal number system, state 3 numbers after 101101.   
     d)   6 kb  = ? byte    
5. Define Network Topology.                                                                

6. State 3 network topology                                                                  

7. What is the main central device for Star Topology ?                     

8.  Bus network topology consist of a single central cable. What is that ?
9.  What is a single bus cable which connecting each device ?  
10.  A  ……………………………  is required at each end of the bus cable to prevent the signal from bouncing back and forth on the bus cable.     
11.  Draw a bus network topology with the backbone, t-connector and terminator.     
12.  Draw a star network topology with one hub/switch and FIVE devices.                     

 

Chapter 4 :
4.1 -  Computer Ethics
4.1.1 - Intellectual Property

4.2 - Computer Security
4.2.1 - Computer Security Risks
4.2.2 - Security Measures

Web Browser

Browsers

Examples :

(MINAMOZ – Mozilla, Internet Explorer, Netscape Navigator, Avant, Maxthon, Opera, Mozilla Firefox), Google Chrome, Safari.

Internet Explorer Internet Explorer (IE) is a web browser from Microsoft. It was released in 1995 and is one of the most popular browsers today.

Firefox Firefox is a web browser from Mozilla. It was released in 2004 and is one of the most popular browsers today.

Google Chrome Google Chrome is a free, open-source web browser developed by Google. It was released in 2008, and is one of the most popular browsers today.

Apple Safari Safari is the default web browser for Mac systems. Safari is known for its sleek design.

Opera Opera is a free, fast, small, and standards-compliant web browser. Opera is the preferred browser for a number of small devices like mobile phones and hand-held computers.

Mozilla The Mozilla Project has grown from the ashes of Netscape. Browsers based on Mozilla code are the largest browser-family on the Internet today.

Netscape Netscape was the first commercial web browser. Netscape was released in 1994, but gradually lost its popularity to Internet Explorer. The development of Netscape officially ended in February 2008.