Choose the correct answer!

What is (PPP)

• Point-to-Point Protocol

• Pay per performance

• Public private partnership

This design for . . . . ?

• Go-Back-N ARQ

• Selective Repeat ARQ

• Stop- and- wait ARQ protocol

What is the relationship between the Stop-and-Wait ARQ protocol and the Go-Back-N ARQ protocol?

• Stop-and-Wait ARQ is completely independent of Go-Back-N ARQ

• Stop-and-Wait ARQ is a special case of Go-Back-N ARQ where the window size is 1

• Go-Back-N ARQ is a special case of Stop-and-Wait ARQ where the window size is 1

What characterizes the simplest protocol in communication?

• Complex data encryption

• Multi-channel transmission

• No flow or error control

In selection repeat ARQ, the size of the sender and receiver window must be at most one-half of 2^m (2^m-1)

• True

• False

in the selective-repeate protocol, an acknowledgement number defines the sequence number of the error-free packet received

• True

• False

(HDLC) is a bit oriented protocol for communication over point-to-point and multipoint links

• True

• False

What is (ARQ) ?

• Automatic Repeat Request

• Advanced Repeat Request

• immediate frame retransmission

This design for . . . ?

• Receive window for selective Repeat ARQ

• Windows size for Go-Back-N ARQ

• Window size for Selection Rapet

This design for . . . ?

• Go-Back-N ARQ

• Selective Repeat ARQ

• Stop-and-wait ARQ