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Delay, Loss, and Throughput in Packet-Switched Networks

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Delay, Loss, and Throughput in Packet-Switched Networks

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Questions and Answers

What are the most important delays a packet suffers from at each node along its path in a computer network?

Connection delay, authentication delay, encryption delay, and decryption delay

Packet loss delay, bandwidth delay, latency delay, and storage delay

Nodal processing delay, queuing delay, transmission delay, and propagation delay (correct)

Encoding delay, decoding delay, modulation delay, and demodulation delay

What is part of the processing delay at a router in a computer network?

Transmitting the packet onto the link

Examining the packet's header and determining where to direct the packet (correct)

Executing operations on the packet's payload

Checking for physical layer errors in the packet

What factor affects the length of queuing delay a packet experiences at a router?

Number of earlier-arriving packets queued and waiting for transmission (correct)

Length of the packet's payload

Time taken for physical layer error detection

Time taken for routing table lookup

In a computer network, what does propagation delay represent?

Time taken for a signal to travel from sender to receiver Signup and view all the answers

Which of the following is NOT part of the nodal processing delay at a router?

Transmitting the packet onto the link Signup and view all the answers

What is the primary function of a queue at a router in a computer network?

To hold packets waiting to be transmitted onto the link Signup and view all the answers

What is the main goal mentioned in the text for Internet services?

To move as much data as possible between any two end systems instantaneously Signup and view all the answers

What is the unfortunate reality mentioned in the text about computer networks?

They introduce delays and loss, constraining throughput Signup and view all the answers

What is one reason mentioned in the text for the many fascinating issues surrounding computer networks?

Because computer networks have problems like delay, loss, and constrained throughput Signup and view all the answers

What is the journey that a packet takes in a packet-switched network?

Passes through a series of routers from source to destination host Signup and view all the answers

Which term is used to define the amount of data per second that can be transferred between end systems?

Throughput Signup and view all the answers

What are the physical laws of reality blamed for in the text?

Introducing delays and loss as well as constraining throughput Signup and view all the answers