- Networks enable people to share computer hardware resources,reducing costs and making it possible for people to benefit from powerful computer equipment.
- Networks allow people to share data ans programs, increasing efficiency and productivity
- Networks allow people to work together , in way that would otherwise be difficult.
5. Under what circumstances is a modem necessary for connecting computers in networks? What does a modem do?
A modem is a hardware device that connects a computer to a telephone line.Modems are necessary when you want to use a telephone network to connect remote computers. It job is to convert digital signals into analog signals and vice versa.
6.Describe at least two communication softwares.
One communication software is known as NOS or a network operating system.. It is for users who work exclusively on a local area network.It must respond to requests from many computers and must coordinate communication through out the network.
Another communication software is the terminal emulation software. It is the most basic communication software outside of LAN.It enables a computer to function as a simple input and output device for sending messages to or receiving messages from the host computer.
7. How can a file server be used in a student computer lab? What software issue
would be raised by using a file server in a student lab?
In a student lab a file server can be used to store file created by students and softwares and sharing them with ease.A software licensing issue that can be raised since some but not all licenses allow the software to be installed on a file server as long as the number of simultaneous users never exceeds the number of licenses copies.
8. What are the difference between email and instant messaging systems?
One of the main differences is that instant messaging is Real -Time communication and is based on typed text while e-mails are not and can include text, images and more.
9. Describe something you can do with email that you can not do with regular mail.
Using email you can send messages within minutes and get a quick response. You don't have to go and drop the letter at a post office.
10. Describe several potential problems associated with email and teleconferencing.
-If the recipient views an HTML-encoded message with a mail program that does not recognize HTML, the formatting doesn't appear.
-Some messages can carry web bugs and viruses
-Junk mailers can get information about you when you read their messages
-they are vulnerable to machine failure, network glitches, and security breaches
-messages can be misunderstood
13. Why is netiquette important? Give some examples of netiquette.
Netiquette is important in ensuring that others have a pleasant Internet experiences. Some examples of good network or Internet etiquettes are respecting the privacy of others, not abusing your power, and avoiding 'flamewars'.
