1. For each item in the table below, decide whether the description is of a conn
ID: 3685070 • Letter: 1
Question
1. For each item in the table below, decide whether the description is of a connectionless (CL) protocol or a connection-oriented (CO) protocol.
Protocol
description
Uses a preliminary protocol to establish a connection before sending data.
Messages are sent from one end to the other without a prior arrangement.
Relies heavily on error detection.
Uses retransmission to assure messages arrive.
Considered an “unreliable” protocol.
Each end point must be able to transmit for effective communication.
Considered a “reliable” protocol.
2. Give an example of a connection-oriented protocol and an example of a connection-less protocol. Both examples must be commonly used today.
Protocol
description
Uses a preliminary protocol to establish a connection before sending data.
Messages are sent from one end to the other without a prior arrangement.
Relies heavily on error detection.
Uses retransmission to assure messages arrive.
Considered an “unreliable” protocol.
Each end point must be able to transmit for effective communication.
Considered a “reliable” protocol.
Explanation / Answer
(1) Protocols
A) Uses a preliminary protocol to establish a connection before sending data.
Ans. Connection-oriented
CO protocol first establish connection before sending data
B) Messages are sent from one end to the other without a prior arrangement.
Ans. Connectionless
CL protocol doesn't guarantee order of messages delevered.
C) Relies heavily on error detection.
Ans. Connectionless
Since CL protocol doesn't acknowledged each packets,it heavily relies on error detection
D) Uses retransmission to assure messages arrive.
Ans. Connection-oriented
CO protocol retransmit if packet is lossed or received corrupted
E) Considered an “unreliable” protocol.
Ans. Connectionless
CL protocol doesn't guarantee the successful transmission of message.
F) Each end point must be able to transmit for effective communication.
Ans Connection-oriented
In CO transmission each both end point transmit data.
G) Considered a “reliable” protocol.
Ans. Connection-oriented
CO protocol gurantees the successful and error free delivery of messages
(2) Examples
Connection-oriented protocol
Transmission COntrol Protocol (TCP): Recipient must confirm it receiver the message.
Connectionless protocol
User Datagram Protocol (UDP): Recipient doesn't confirm they received the message.
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