Transcript Information Retrieval from Internet

Internet Tips & Tricks
Vaibhav Kalia
Dept. of Stat., Math, Physics
College of Basic Sciences
C S K H P K V, Palampur
INTERNET
A
collection of Computers.
Communication is based
on Standard Protocols Transmission Control
Protocol/Internet Protocol
(TCP/IP)
HTTP Browsing
FTP
Internet
E-Mail
Remote Login
Information Servers
HTTP – Hyper Text Transfer
Protocol
 Hyper Text includes Text,
Images & general multimedia
content.
 A Web-server is installed in a
website that displays the
starting page of a website
automatically.
FTP – File Transfer Protocol
 A method of transferring files
from one computer to another.
 A username and a password is
required to access a FTP site.
 Publicly accessible FTP servers
are called anonymous FTP
servers.
FTP in Windows
 All Windows Versions (Win 9x,
Me, 2000, XP) have FTP clients.
 True Integration of FTP in
Microsoft Internet Explorer.
 Third party FTP client software
like GetRight
Web Browsing Tips (Internet Explorer )
 Instead of writing http://www.google.com
you can get the same results by writing
google CTRL + ENTER
 Shift Click on a link opens the link in a
new browser window.
 Turning off pictures in web browser
options reduces the amount of data
transferred and increases speed.
 While printing web pages, background
pictures should not be printed to save
Ink!
I.E. Turning off pictures
I.E. – Managing Favorites
 Listing your
favorite pages
for quick
viewing. When
you find Web
sites or pages
that you like,
you can keep
track of them, so
it's easy to open
them in the
future.
I.E. – Managing Favorites
 Its better to keep
similar pages
together.
 Creating folders
and moving
favorite links to
their respective
folders is
advisable.
I.E. – Favorites Organized
Finding Information Online
 Search engines like GOOGLE are
used.
 Query should be brief & precise.
 Avoid writing sentences like “I
want to download media player”
 Instead “Media Player” + Download
will give better results.
 I‘m Feeling Lucky option takes you
automatically to first search result.
I.E. – Keyboard Shortcuts
Press this
To do this
F11
Toggle Full Screen mode
CTRL+F
Finds on current page displayed
F5 or CTRL+R
Refreshes current page
CTRL+N
Opens New Window
CTRL+I
Open Favorites in Explorer bar
CTRL+W
Closes the current Window
F4
Display the Address bar history
CTRL+D
Adds a page to Favorites
CTRL+S
Saves a Webpage to local disk
Electronic Mail (e-mail)
 There are different advantages of
Internet but none can match the impact
of e-mail
 Defined as the exchange of messages
and computer files between computers
over a computer network.
 The network can be as small as a local
area network (LAN) or it can be as large
as Internet that spans the world.
 The cost of email is very less & is same
for email destined to any place world.
How e-mail works
Mail Server
Mail Server
Sender
Sends
mail to
mail
server
Store & forward
Store & forward
Store and Forward principle
Recipient
Collects
mail
from
mail
server
Email
 Web based Emails
 Free Email sites like Hotmail, Yahoo provide free
email access.
 One has to bear with the advertisements for free
services.
 Mailbox size is limited. ( 2 MB to 10MB)
 POP enabled
 Works on Post Office Protocol.
 An POP client software (Outlook Express) is
required to access mails.
 Emails can be downloaded into local
computers.
Primary Source of Virus Transmission over Internet
Sending Emails
 The subject should be written precise so that
reader can get an idea of email.
 The attachments should be of small size.
 A Zip file attachment in much smaller than
original file.
 If sending single email to multiple recipients,
its advisable to send a BCC. The To field is
deleted at the recipient side
 Spam/Chain mails should not be forwarded.
Outlook Express Shortcuts
Press this
CTRL+ M
CTRL+ I
To do this
Send & Receive
Go to Inbox
CTRL+ N
Create a new mail message
CTRL+SHIFT+ B Opens Address Book
CTRL+ >
Go to next message in list
CTRL+ Y
Go to Folder
CTRL+ U
Go to next Unread Message
CTRL+SHIFT+ F Find a Message
CTRL+ R
Reply to author of Message
Viewing Message Properties
Viewing Properties – Message Source
Prevent Virus Spread
 Attachments from unknown
persons should not be opened.
 .DOC, .XLS, .SCR, .EXE, .PIF,
.VBS, .COM, .REG are unsafe &
can contain viruses.
 Sending .TXT and .RTF files
should be encouraged.
 Antivirus software with latest
updates should be present.
Preventing Virus Spread
 Email Viruses use address book to
send its copies to all users. This can be
dangerous because emails goes from
your name.
 To avoid this – In address book create
an entry with name !000 and blank
email address.
 Email software will block the email if
virus sends a mail to this address.
Preventing Virus Spread
What to do if a virus infects
 Isolate your machine from network.




Unplug the network cable of your
machine immediately.
Perform a clean boot (boot from a clean
floppy diskette)
Run the Virus Scanner
Keep regular backup of data onto
CDROM.
Never share folders with WRITE access
General Internet Usage Tips
 Sharing software: Its better to copy Virus
definitions, Yahoo Messenger etc from a
colleague who has the latest version
rather than everyone downloading from
the Internet.
 Sharing photographs: Instead of sending
photographs to everyone through emails
its better to upload them on yahoo photos
& send the link to all persons.
Thank You
Any comments/queries can be addressed to
Vaibhav Kalia
Asst. Professor (Computer Science)
Department of Stat., Math., Physics
College of Basic Sciences
CSK H P K V, Palampur
[email protected]