Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days


Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number


Mon to Sat - 11 AM to 8 PM

CBSE - XII Science - Physics - Communication Systems

write 2 advantages of digital signal.write 1 diffrenve between fax and e-mail systems of communication.

Asked by ESHA ESHA 22nd February 2013, 11:31 AM
Answered by Expert


Difference between email and fax are:

An email is stored and then forwarded by the internet to the recipient. An email is not a runtime message. There is always a considerable time lag between the senders sending and receivers receiving. Email gets stored in the recipient's inbox. 

A fax is not stored in any kind of device. The original document is copied and the photocopy of the original document is sent via telephone connection (not internet) and printed on the other side (receivers end). Fax is a runtime message. The receiver receives the copy of the document instantly after it is copied by the fax machine on the senders end. Fax do not get stored in the recipient's inbox.

 Advantages of digital  signal:
1.Highly resistive to noise as we are dealing with binary digits.
2.Highly secure.
Answered by Expert 22nd February 2013, 12:20 PM

Rate this answer

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Report an issue
Your answer has been posted successfully!

Related Question

Answered by Expert
Answered by Expert
Answered by Expert
Answered by Expert