16 Questions
What are the parameters used to measure network performance?
Loss, Delay, Throughput
In computer networks, what is a queue?
A collection of data packets waiting to be transmitted
What does network congestion lead to?
Loss and delay
What causes network delay in the presence of excessive network traffic?
Large queue size
Which of the following is NOT a parameter used to measure network performance?
Network security
What is a collection of data packets collectively waiting to be transmitted by a network device known as?
Queue
What is packet loss?
Packets that are discarded due to reaching the maximum queue capacity
Which time delay is dependent on the packet length and transmission rate?
Transmission time
What is the most dominant time delay in network performance?
Queueing time
Which factor determines whether the queuing time will be small or large?
Transmission rate (L/R)
What does propagation delay depend on?
Wire length
In the Caravan Scenario, what does the transmission time depend on?
Packet length (bits)
What is the propagation delay in the Caravan Scenario with a 1000 km direct link and propagation speed of 2.5 x 10^8 meters/sec?
$0.005$ seconds
What is the transmission delay for sending a file of 2000 bytes from A to B over a direct link of R = 2 Mbps?
$0.08$ seconds
What is not a dominant time delay in network performance?
Propagation time
Which factor determines the queuing time in a network?
$a$: average packet arrival rate
This quiz covers lecture 3 on computer networks, focusing on network performance parameters such as delay, loss, and throughput, as well as network security and protocol layers. The content is based on the book 'Computer Networking: A Top Down Approach' by Jim Kurose and Keith Ross, 6th edition, Addison-Wesley, 2012.
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