PPP supports error correction ???

mincol

PPP supports error correction or error detection or both ?

I found some answers from internet and books, some of them said both, some said error correction, but with my book, it only said detection.

which should I choose if I meet this question on ccna exam ?

Thank you

tech-airman

mincol wrote:

PPP supports error correction or error detection or both ?

I found some answers from internet and books, some of them said both, some said error correction, but with my book, it only said detection.

which should I choose if I meet this question on ccna exam ?

Thank you

mincol,

According to the "Point to Point Protocol (PPP)" webpage in the Internetworking Technology Handbook website at cisco.com it states...

Point to Point Protocol (PPP) wrote:

• Frame check sequence (FCS)—Normally 16 bits (2 bytes). By prior agreement, consenting PPP implementations can use a 32-bit (4-byte) FCS for improved error detection.

So I would say "PPP supports error detection."

Source:

1. "Point to Point Protocol (PPP)" webpage in the Internetworking Technology Handbook @ cisco.com - http://www.cisco.com/en/US/docs/internetworking/technology/handbook/PPP.html

JavonR

whenever you're dealing with layer 2 protocols it's a safe bet to assume error detection is the only thing that exists.