What are RTS and CTS packets?

Expert Solution

RTS (Request to Send) & CTS (Clear to Send) was used to avoid frame collisions in the hidden node problem and was used by the 802.11 networking protocol as an optional mechanisam. Modern RTS & CTS includes acknowledgments and does not solves exposed node problem which was solved earlier.

It means Request-to-send and Clear-to-send . when stations are communicating each other it will be used inorder to avoid collision.

Mechanisms of RTS and CTS:

When a node wants to transmit data to another node, it sends out a RTS 'Request to Send' packet. The receiver node replies with a packet called CTS 'Cleared to Send' packet.After the transmitter node receives the CTS packet, it transmits the data packets. Encoded within the RTS/CTS packets is a duration field. The duration field is set such that the data transmission can be completed within the designated time period. If a transmiiter node does not receive a CTS packet it enters into an exponential back off mode.

Manojponduru answered 5 months ago

Packets arrive at an infinite buffer at a Poisson rate of 100 packets/sec, and are transmitted...

Packets arrive at an infinite buffer at a Poisson rate of 100 packets/sec, and are transmitted over a link of rate 1 Mbps in an FCFS manner. An arriving packet is a 100-bit packet with probability 0.2, a 1000-bit packet with probability 0.5, and a 10000-bit packet with probability 0.3 . Find (a) the average waiting time for a packet, and (b) the average number of packets in the buffer, in steady state.

a) TCP/IP what is the name of the packets at the data link layer? b) What...

a) TCP/IP what is the name of the packets at the data link layer? b) What are the two identifiers to locate a process in other part of the world so we can connect to it? c) Supposed you are making a broadcast in your local network and the broadcasts reach a router . Would the router forward this broadcast message further or stop it? Why or why not? d) Tcp/IP is the defacto network architecture for today's internet/ What...

Explain what is RTS/CTS scheme. How can they mitigate the exposed node and hidden node problems?

List methods for assigning packets to VLANs.

(3) -> The arrival of packets at an Ethernet adapter of a web server is described...

(3) -> The arrival of packets at an Ethernet adapter of a web server is described by a Poisson process with a rate of 100 packets per second . Packets that arrive to the Ethernet adapter described in the above problem (3) are queued up in a buffer until processed by the Interrupt Service Routine (ISR). Assuming that the ISR service time per packet is exponential with an average of 9.6 milliseconds. Answer the following questions: (a) What is the...

Thoughts and feedback on this? If there were no hop limits put on packets, the packet...

Thoughts and feedback on this? If there were no hop limits put on packets, the packet could get stuck in an infinite loop and slow down the network. It could also cause the packet to lose data. According to Ms. Taylor from Stanford, It typically takes 10-20 hops in order to reach a destination. I’m struggling to find a reason why a series of routers on a network wouldn’t surge the hop count past 255. From viewing Tirek’s response, it...

1. (Important: Assume RTS/CTS mechanism is used) Suppose there are two ISPs providing WiFi access in...

1. (Important: Assume RTS/CTS mechanism is used) Suppose there are two ISPs providing WiFi access in the same café, with each ISP operating its own AP. a. If each ISP has configured its AP to operate over the same channel, channel 11. Will the 802.11 protocol completely break down in this situation? Discuss what occurs when two devices, each associated with a different AP, attempt to transmit at the same time. b. Suppose now one AP changes its channel to...

2) A cereal company claims that the mean weight of the cereal in its packets is...

2) A cereal company claims that the mean weight of the cereal in its packets is 14 oz. The weights (in ounces) of the cereal in a random sample of 8 of its cereal packets are listed below. 14.6 13.8 14.1 13.7 14.0 14.4 13.6 14.2 Test the claim at the 0.01 significance level. using it ti-84 calculator please stpe by step

This program is in Python ### simulates packets of data arriving at irregular times. The data...

This program is in Python ### simulates packets of data arriving at irregular times. The data gets ### read from the file and then you must place it in a queue where it will wait ### its turn to get processed. The "processing" happens in a threaded subroutine ### called "process_input_data". That function should pull data from the queue, ### hash the student ID number, and then store the data in a hash table which ### you have to implement....

1) You have a device that wants to transmit many packets to a router, which is...

1) You have a device that wants to transmit many packets to a router, which is sometimes busy serving other users. At every second, your device attempts to send a packet. It succeeds with probability 1/5 and the success of any attempt is independent of the success of other attempts. What is the average number of attempts until the first success? 2)You have a device that wants to transmit many packets to a router, which is sometimes busy serving other...

Question