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Computer Networks Lecture 7: Transport Layer and Network Layer Protocols

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Computer Networks Lecture 7: Transport Layer and Network Layer Protocols

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Questions and Answers

What is the main responsibility of the transport layer in a computer network?

Providing logical communication between application processes on different hosts (correct)
Ensuring physical data transfer between hosts
Handling communication between network layer protocols
Establishing communication between data link layers

Which functionality is NOT a responsibility of the transport layer in a computer network?

Multiplexing and demultiplexing
Congestion control
Routing packets between hosts (correct)
Reliable data transfer

Which transport layer protocol provides connection-oriented and reliable transport?

TCP (correct)
ICMP
UDP
IP

What function does UDP perform in a computer network?

Connectionless/unreliable transport (A) Signup and view all the answers

What communication does the network layer in a computer network facilitate?

Communication between hosts (C) Signup and view all the answers

What is the main difference between connection-oriented protocols and connectionless protocols?

Connection-oriented protocols establish a dedicated connection between devices before transmitting data, while connectionless protocols don’t establish a dedicated connection before transmitting data. (D) Signup and view all the answers

What feature is unique to TCP (Transmission Control Protocol) and not available in UDP (User Datagram Protocol)?

Congestion control (B) Signup and view all the answers

What is the purpose of multiplexing at the sender's side in the transport layer?

To collect messages from multiple sockets and add transport layer info for demultiplexing (A) Signup and view all the answers

What type of protocol ensures that all data packets are delivered without any errors?

Connection-oriented protocol (C) Signup and view all the answers

Which service is not available in both UDP and TCP?

Determined delay guarantees (C) Signup and view all the answers