Q) WRITE ABOUT E-MAIL ADVANTAGES AND
THE DISADVANTAGES
E-mail (Electronic Mail): E-mail is one of the most popular
services available through
the
Internet. E-mail is a lot less expensive than a phone call and nearly as fast.
Today many people all over the world
have been exposed to e-mail.
Through e-mail system people can now receive and
send e-mail to:
1. Nearly
any country in the world.
2. One
of millions of computer users.
3. Many
users at once. Advantages of E-mail:
1. Convenience: There are no trips to the post office, and no need to search
for stationary and stamps. Sending a memo or short note it easy. A message can be informal or formal.
2. Speed: E-mail
is fast, based on the speed of the underlying communication network.
3. Inexpensive: Once
you are on online, the cost of sending a message is small. Sending 100 pages
document requires no more efforts or cost than sending a one-page document.
4. Printable: A
hard copy is easy to obtain. However, since a great deal of correspondence does
not need to be printed, using e-mail saves on natural resources. You can keep an electronic copy of a message for your
own records.
5. Reliable: Although
messages are occasionally lost, this is rare. Many mail systems will notify the sender if an e-mail
message was undeliverable.
6. Global: Ever increasingly, people and
businesses all over the world are using e-mail.
7. Generality: E-mail
is not limited to text; it allows the transfer of graphics, programs, and even sounds.
Disadvantages of E-mail:
1.
Misdirection: With
e-mail, you are your own worst enemy.
It is far more likely that you will accidentally send e-mail to an unintended recipient than it is for someone
actually to intercept your e-mail.
2.
Interception: It is
possible, although unlikely, that eavesdroppers are “listening in” on e-mail correspondence. As a rule of thumb,
never send an e-mail message that
you would not want the whole world to see. It is simple for someone to pass on your message, called e-mail forwarding another party.
3. Forgery: E-mail does not preclude forgeries
that is, someone
impersonating the sender,
since the sender is usually not authenticated in any way.
4. Overload: E-mail
can also be too convenient and result in a flood of mail.
5. No response: A mild irritation sometimes
associated with using e-mail is dealing
with recipients who do not read and respond to their e-mail on a regular basis.
On the whole, the advantages of e-mail
are great, and the disadvantages, although
real,
are acceptable
when compared with alternatives.
ANS: A) USER-ID’S: Synonyms for
userid are user name and account name. Userid is merely the
concatenation of the word “user“and
the abbreviation “id,” standing for identification.
Your userid identifies you to
the computer. Userid’s have some mnemonic meaning. Userid’s are much easier to remember. If
you have a choice, pick as descriptive a name as possible, but one that is also easy to type and
associate with you. If you have a common name or are part of a
large
organization, your first name and last name combined will probably not uniquely identify you. In such cases, it may be
necessary to append a number to your name.
For example: Shaikayaan18.
B)PASSWORDS: Your password is a secret code that authenticates
you to the computer. This is done
simply to check that you are who you say you are. In theory your are the only
one who knows the password to your
computer account and no one except you should be able to log in to your
account.
A good
password should:
·
Be at least eight characters long.
·
Contain a no alphabetical symbol such as
&, %, or !
·
Contain a number.
·
Possess uppercase and lowercase letters.
c)
E-Mail Addresses: The
basic form of an e-mail address is
username@hostname.subdomain.domain
There are some exceptions, but this
format covers most common addresses. The text
before the @ (pronounced
“at”) sign specifies the username of the individual, while the text after the @ sign indicates how the
computer system can locate that
individual’s mailbox. For example: maria@cs.coloradio.edu
The first important point to be aware of is that the suffix
following the @ sign gets more general form left to right. That is, cs is a subdomain of colorado, colorado
is a subdomain of edu,
and edu specifies a top-level domain
name. In this case, National
is a master science major at
the University of colorado.
Some of the examples of e-mail id’s (addresses):
The
number of periods
(a period is pronounced as “dot”) varies from e-mail address to e-mail address.
Most addresses have either one or two dots.
