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In a Selective Repeat connection, the receiver did not get any data for a long time. How will it react?
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מיין לפי
In a Go-Back-N connection, the receiver received packets #1, #2, and #3, and now it receives packet #5. How will it react?
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In an active TCP connection, the sender receives two identical ACKs. What happens to the receive window?
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מיין לפי
The central router of a major online retail platform’s distribution center is connected to its primary database servers with a speed of 6 Gbps. To enhance customer experience during peak shopping seasons, the company has allocated a budget for network upgrades. They are considering two options: Option 1- Upgrade the connection speed between the router and the servers to 10 Gbps. Option 2- Install a cache memory at the router, which can store frequently accessed data. The access time to the cache is negligible. Because the servers and the router are located in the same facility, propagation delays are negligible. Additionally, we will neglect any processing delays in the routers and servers. What should be the minimum hit rate of the cache memory for it to be a better investment than upgrading the connection speed?
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מיין לפי
Suppose users share a 2 Mbps link. Each user transmits continuously at 1 Mbps when transmitting, but each user transmits only 20% of the time. When circuit switching is used, how many users can be supported?
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Suppose users share a 2 Mbps link. Each user transmits continuously at 1 Mbps when transmitting, but each user transmits only 20% of the time. For packet switching, why will there be no queuing delay if two or fewer users transmit at the same time? Why will there be a queuing delay if three users transmit at the same time?
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Suppose users share a 2 Mbps link. Each user transmits continuously at 1 Mbps when transmitting, but each user transmits only 20% of the time. Find the probability that a given user is transmitting.
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מיין לפי
Suppose users share a 2 Mbps link. Each user transmits continuously at 1 Mbps when transmitting, but each user transmits only 20% of the time. Suppose there are three users. Find the probability that all three users are transmitting simultaneously. Find the fraction of time during which the queue grows.
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מיין לפי
How long does it take a packet to propagate over a link with a distance of 2,500 km and a propagation speed of 2.5*10^8 m/s?
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