8th Class Computers Science Networking Reading E-mail

    Reading E-mail

E-mail (Electronic mail) is a digital correspondence that provides the facility to send and receive text messages, picture files and any other file to and from anyone with an e-mail address. E-mail is fast, easy and inexpensive. Email is a formal conversation. It should be point to point and well written. In current market there are many service providers who provide free e-mail services on the Internet, such as www.gmail.com, www.yahoo.com, www.hotmail.com and www.msn.com. The first part of the address is a user name. The second part or domain name defines the Internet provider where the mail is sent. The two parts are separated by an @ sign (pronounced as "at the rate"). The domain name is '' followed by an extension that indicates the type of organization to which the network belongs.  

  To read new e-mail: 

• Open the website and login in your site.
• Check for new messages. When new mail arrives, you will hear a sound, get a message and/or see a little envelope in your system tray.
• Your mail program collects all the messages on your mail server and displays them in your Inbox.
• To read a message, double-click it.  

 To print e-mail: 

• Open the mail by double-click.
• Select File -> Print to open Print dialog box.
• Click OK.  

  To save an e-mail to disk: 

• Open the mail by double-click.
• Select File -> Save or Save As to open the Save As dialog box.
• Type the name in File name text box.
• Click OK.        

 Network topology refers to the way a computer network is laid out, either physically or logically. Which of the following are the types of Network topology?

(A) Star                                                                

(B) Bus

(C) Ring                                                               

(D) All of these

(E) None of these  

Answer: (d)

Explanation

Correct Option:

(D) Network topology, such as star, bus and ring refers to the way a computer network is laid out. Incorrect Option: Rests of the options are invalid.    

 In..............topology all nodes are connected together to the parallel cable.

(A) Star                                                                

(B) Bus

(C) Ring                                                               

(D) All of these

(E) None of these  

Answer: (b)

Explanation                          

Correct Option:

(B) In bus topology all nodes are connected together to the parallel cable by drop lines and taps/T-connectors.

Incorrect Options:

(A) In star topology each node is directly connected with hub.

(C) In ring topology all computers are connected in a ring shape.  

 Browser allows you to open website. Which of the following browsers allow saving your favorite sites?

(A) Internet Explorer 6                                 

(B) Internet Explorer 7

(C) Mozila Firefox                                           

(D) All of these

(E) None of these  

Answer: (d)

Explanation

Correct Option:

(D) Mostly all browsers, such as IE allows saving sites.

Incorrect Option:

Rests of the options are invalid.  

• In old days Internet was known as ARPANET (Advanced Research Projects Agency Network).
• Tree is also a type of topology.
• Hybrid is a combination of any two or more topology.  

• AppleTalk: Is a routable protocol and is mainly used to communicate with Macintosh computers on the network.
• NWLink: Is used in Novell NetWare networks. This protocol is easy to install and is also a routable protocol.
• Mesh Topology: In mesh topology each node has a dedicated point - to - point link to every other device.
• Bus Topology: In this topology all nodes are connected together to the parallel cable by drop lines and taps/T-connectors.  

• Protocols are set of rules..
• A WAN (Wide Area Network) is one of the computer networks which can be established on a large geographical area.
• Network connections between two offices and branches are the good example of intranet.
• In ring topology each node has an input and an output connection.
• Email is a formal conversation. It should be point to point and well written. NetBIOS is the fastest protocol and does not require any configuration to implement.
• Protocols are generally implemented by software, hardware or a combination of the two.
• The Internet goes back to early 1960's.
• Topology defines the way in which network devices are organized geometrically.  

  Abbreviations

ARPANET             -              Advanced Research Projects Agency Network

DARPA                  -              Defense Advanced Research Projects Agency

UCLA                     -              University of California, Los Angeles

UCSB                     -              University of California, Santa Barbara