INTERVIEW QUESTIONS NETWORKING DETAILS

Question: what is difference beetween ISDN and ATM?

Answer: ISDN is an example of Circuite switching
but
ATM is Packet Switching or Cell switching.

ISDN is an example of Circuite switching
but
ATM is Packet Switching or Cell switching.

Source: CoolInterview.com

integrated service digital n/w Source: CoolInterview.com

what is difference beetween ISDN and ATM?

Source: CoolInterview.com

ISDN is a ckt switched point to piont fixed bandwidth communication,while ATM is packed switched variable bandwidth (means bandwidth of one side may deffer from the bandwidth of other) communication. Source: CoolInterview.com

Integrated Services refers to ISDN's ability to deliver at minimum two simultaneous connections, in any combination of data, voice, video, and fax, over a single line. Multiple devices can be attached to the line, and used as needed. That means an ISDN line can take care of most people's complete communications needs at a much higher transmission rate, without forcing the purchase of multiple analog phone lines.
Asynchronous Transfer Mode (ATM) is a cell relay, packet switching network and data link layer protocol which encodes data traffic into small (53 bytes; 48 bytes of data and 5 bytes of header information) fixed-sized cells. ATM provides data link layer services that run over Layer 1 links. This differs from other technologies based on packet-switched networks (such as the Internet Protocol or Ethernet), in which variable sized packets (known as frames when referencing layer 2) are used. ATM is a connection-oriented technology, in which a logical connection is established between the two endpoints before the actual data exchange begins.
Source: CoolInterview.com

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