What is meant by congestion? Why the congestion occurs in network?

What is meant by congestion? Why the congestion occurs in network?
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1 Answer

Answer :

Congestion in a network occurs if user sends data into the network at a rate greater than that  allowed by network resources. Congestion occurs because the switches in a network have a limited buffer  size to store arrived packets.
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Related questions

Congestion in a network or internetwork occurs because routers and switches have _______. A. tables B. queues C. crosspoints D. none of the above

Description : Congestion in a network or internetwork occurs because routers and switches have _______. A. tables B. queues C. crosspoints D. none of the above

Last Answer : B. queues

Consider an instance of TCP’s Additive Increase Multiplicative Decrease (AIMD) algorithm where the window size at the start of the slow start phase is 2 MSS and the threshold at the start of the first transmission is 8 MSS. Assume that a timeout occurs during the fifth transmission. Find the congestion window size at the end of the tenth transmission. a. 8 MSS b. 14 MSS c. 7 MSS d. 12 MSS

Description : Consider an instance of TCP's Additive Increase Multiplicative Decrease (AIMD) algorithm where the window size at the start of the slow start phase is 2 MSS and the threshold at the start of the first transmission is ... the end of the tenth transmission. a. 8 MSS b. 14 MSS c. 7 MSS d. 12 MSS

Last Answer : c. 7 MSS

In open-loop control, policies are applied to __________ A. Remove after congestion occurs B. Remove after sometime C. Prevent before congestion occurs D. Prevent before sending packets

Description : In open-loop control, policies are applied to __________ A. Remove after congestion occurs B. Remove after sometime C. Prevent before congestion occurs D. Prevent before sending packets

Last Answer : C. Prevent before congestion occurs

Congestion control can control traffic entry into a telecommunications network, so to avoid _________ a. Congestive connection b. Connection collapse c. Congestive collapse d. Collapse congestive

Description : Congestion control can control traffic entry into a telecommunications network, so to avoid _________ a. Congestive connection b. Connection collapse c. Congestive collapse d. Collapse congestive

Last Answer : c. Congestive collapse

Which of the following is not a congestion policy at network layer? a. Flow Control Policy b. Packet Discard Policy c. Packet Lifetime Management Policy d. Routing Algorithm

Description : Which of the following is not a congestion policy at network layer? a. Flow Control Policy b. Packet Discard Policy c. Packet Lifetime Management Policy d. Routing Algorithm

Last Answer : a. Flow Control Policy

Which one of the following is not a function of network layer? a. routing b. inter-networking c. congestion control d. error contro

Description : Which one of the following is not a function of network layer? a. routing b. inter-networking c. congestion control d. error contro

Last Answer : d. error control

Which one of the following is not a function of network layer? a) routing b) inter-networkingc) congestion control d) error control

Description : Which one of the following is not a function of network layer? a) routing b) inter-networking c) congestion control d) error control

Last Answer : d) error control

Congestion in a network or internetwork occurs because routers and switches have _______

Description : Congestion in a network or internetwork occurs because routers and switches have _______

Last Answer : queues

In the slow start phase of the TCP congestion control algorithm, the size of the congestion window a. does not increase b. increases linearly c. increases quadratically d. increases exponentially

Description : In the slow start phase of the TCP congestion control algorithm, the size of the congestion window a. does not increase b. increases linearly c. increases quadratically d. increases exponentially

Last Answer : d. increases exponentially

Which services are provided by transport layer? a. Error control b. Connection service c. Connection less service d. Congestion control

Description : Which services are provided by transport layer? a. Error control b. Connection service c. Connection less service d. Congestion control

Last Answer : a. Error control

What are the functions of the transport layer? a. Multiplexing/ Demultiplexing b. Connection less Services c. Connection oriented service d. Congestion control

Description : What are the functions of the transport layer? a. Multiplexing/ Demultiplexing b. Connection less Services c. Connection oriented service d. Congestion control

Last Answer : a. Multiplexing/ Demultiplexing

Which one of the following is a version of UDP with congestion control? a. datagram congestion control protocol b. stream control transmission protocol c. structured stream transport d. user congestion control protocol

Description : Which one of the following is a version of UDP with congestion control? a. datagram congestion control protocol b. stream control transmission protocol c. structured stream transport d. user congestion control protocol

Last Answer : a. datagram congestion control protocol

Which one of the following is a version of UDP with congestion control? a. datagram congestion control protocol b. stream control transmission protocol c. structured stream transport d. user congestion control protocol

Description : Which one of the following is a version of UDP with congestion control? a. datagram congestion control protocol b. stream control transmission protocol c. structured stream transport d. user congestion control protocol

Last Answer : a. datagram congestion control protocol

Which one of the following algorithm is not used for congestion control? a. traffic aware routing b. admission control c. load shedding d. routing information protocol

Description : Which one of the following algorithm is not used for congestion control? a. traffic aware routing b. admission control c. load shedding d. routing information protocol

Last Answer : d. routing information protocol

______ is a static algorithm in which every incoming packet is sent out on every outgoing line except the one it arrives on. This method usually generates vast number of duplicate packets.. A. Flooding B. Wait and watch C. congestion D. both a and c

Description : ______ is a static algorithm in which every incoming packet is sent out on every outgoing line except the one it arrives on. This method usually generates vast number of duplicate packets.. A. Flooding B. Wait and watch C. congestion D. both a and c

Last Answer : A. Flooding

The subnet gets increasingly loaded with packets causing increase in delay in the delivery of packets, which can lead to more retransmission, and ultimately increasing more and more traffic. This is a concept called as _________ A. blockage B. Traffic jam. C. Congestion D. both a and b

Description : The subnet gets increasingly loaded with packets causing increase in delay in the delivery of packets, which can lead to more retransmission, and ultimately increasing more and more traffic. This is a concept called as _________ A. blockage B. Traffic jam. C. Congestion D. both a and b

Last Answer : C. Congestion

In the ________ algorithm of TCP, the size of the congestion window increases exponentially until it reaches a threshold A. slow-start B. congestion avoidance C. congestion detection D. none of the above

Description : In the ________ algorithm of TCP, the size of the congestion window increases exponentially until it reaches a threshold A. slow-start B. congestion avoidance C. congestion detection D. none of the above

Last Answer : A. slow-start

The packet sent by a node to the source to inform it of congestion is called _______ A. Explicit B. Discard C. Choke D. Backpressure

Description : The packet sent by a node to the source to inform it of congestion is called _______ A. Explicit B. Discard C. Choke D. Backpressure

Last Answer : C. Choke

Explain the Congestion Avoidance techniques in detail.

Description : Explain the Congestion Avoidance techniques in detail.

Last Answer : _ Leaky bucket algorithm _ Token bucket algorithm _ Switch controlling the output rate _ Flowchart

Explain about congestion control

Description : Explain about congestion control

Last Answer : Congestion avoidance ∙ BECN ∙ FECN ∙ Four situations ∙ Discarding

Define Congestion Control.

Description : Define Congestion Control.

Last Answer : It involves preventing too much data from being injected into the network, thereby causing switches or links to become overloaded. Thus flow control is an end to an end issue, while congestion control is concerned with how hosts and networks interact.

Which of the following is not a congestion policy at network layer? (A) Flow Control Policy (B) Packet Discard Policy (C) Packet Lifetime Management Policy (D) Routing Algorithm

Description : Which of the following is not a congestion policy at network layer? (A) Flow Control Policy (B) Packet Discard Policy (C) Packet Lifetime Management Policy (D) Routing Algorithm

Last Answer : (A) Flow Control Policy

The Network is overloaded with enormous data sent by many computers within the network. The inability of the network to deliver the data is termed as __________ . (1) Access control (2) Congestion (3) Error propagation (4) Deadlock

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Last Answer : Congestion

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A modern electronic computer is a machine that is meant for a. Doing quick mathematical calculations b. Input, storage, manipulation and outputting of data c. Electronic data processing d. Performing repetitive tasks accuratel

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Last Answer : Input, storage, manipulation and outputting of data

What is meant by quality of service? What are the two categories of it?

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Last Answer : The quality of service defines a set of attributes related to the performance of the connection. For each connection, the user can request a particular attribute each service class is associated with a set of attributes. The two main categories are, ∙ User Oriented ∙ Network Oriented

What is meant by Concatenation?

Description : What is meant by Concatenation?

Last Answer : The size of the data unit belonging to single sessions are so small that several can fit together into a single datagram or frame, the transport protocol combines them into a single data unit. The combining process is called concatenation.

What is meant by segment? What is meant by segmentation?

Description : What is meant by segment? What is meant by segmentation?

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What is meant by bridge?

Description : What is meant by bridge?

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. In IEEE 802.11, communication between two stations in twodifferent BSSs usually occurs viatwo ________. A) BSSs B) ESSs C) APs D) none of the above

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Last Answer : APs

When a beam of light travels through media of two different densities, if theangle of incidence isgreater than the critical angle, _______ occurs. A) reflection B) refraction C) incidence D) criticism

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In ________APS, there is only one protection line for many workinglines. When afailure occurs in oneof the working lines, the protectionline takes control until the failedline is repaired. A) one-plus-one B) one-to-one C) one-to-many D) none of the above

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Last Answer : d.sessions are created

The TCP sliding window a. can be used to control the flow of information b. always occurs when the field value is 0 c. always occurs when the field value is 1 d. occurs horizontally

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Last Answer : a. can be used to control the flow of information

When does the station B send a positive acknowledgement (ACK) to station A in Stop and Wait protocol? a. only when no error occurs at the transmission level b. when retransmission of old packet in a novel frame is necessary c. only when station B receives frame with errorsd. all of the above

Description : When does the station B send a positive acknowledgement (ACK) to station A in Stop and Wait protocol? a. only when no error occurs at the transmission level b. when retransmission of old packet in a novel frame is necessary c. only when station B receives frame with errors d. all of the above

Last Answer : only when no error occurs at the transmission level

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Description : When does the station B send a positive acknowledgement (ACK) to station A in Stop and Wait protocol? a. only when no error occurs at the transmission level b. when retransmission of old packet in a novel frame is necessary c. only when station B receives frame with errors d. all of the above

Last Answer : only when no error occurs at the transmission level

Which mode of Communication occurs between a computer and a keyboard. a. Automatic b. Half-duplex c. Full-duplex d. Simplex

Description : Which mode of Communication occurs between a computer and a keyboard. a. Automatic b. Half-duplex c. Full-duplex d. Simplex

Last Answer : d. Simplex

Persistant congestion with cough - what worked for you?

Description : Persistant congestion with cough - what worked for you?

Last Answer : Wow! I've had the same thing since January! It's slowly getting better, but lots of (drinking) fluids seems to help. Slowly, but slowly, it seems to be subsiding. Take your multiple vitamins, aspirin, stay ... I cough up from deep in the lungs helps a lot. Try not to inhale any dust of any kind )

Ear Congestion Clicking and Ringing Ears?

Description : Ear Congestion Clicking and Ringing Ears?

Last Answer : answer:Sending this to our resident audiologist. Squirtingt water into ears can easily induce dizziness but is unrelated to eardrum issue. Can you see an ENT (ear, nose and throat specialist)? He’s in charge of eardrums. Aka Otolaryngologist.

How do I fix my nasal congestion?

Description : How do I fix my nasal congestion?

Last Answer : You’ve seen it a hundred times on TV or in movies. Big pot of hot, salty water. Hold you head over it, covered by a towel, and breathe in the steam.

Ear congestion and vertigo...ear infection?

Description : Ear congestion and vertigo...ear infection?

Last Answer : If it is an ear infection and it is left untreated, it could go into the mastoid bone requiring surgery. Go to a doctor.

Is this a valid and convincing diagnosis and treatment for nasal congestion?

Description : Is this a valid and convincing diagnosis and treatment for nasal congestion?

Last Answer : It could have been an accurate diagnosis. Obviously there was something there for them to remove. I would imagine they did some kind of xray or ct to see what was going on and to come to ... is a blockage caused by something that can be removed or repaired, that's definitely the right treatment.

Best way to get rid of sinus congestion?

Description : Best way to get rid of sinus congestion?

Last Answer : Mucinex, works wonders.

How to get rid of ear congestion?

Description : How to get rid of ear congestion?

Last Answer : It’s probably due to nasal congestion. Try taking a nasal decongestant (provided you are okay to do so) and see if it gets any better.

When cough, congestion, and other cold-like symptoms are the side effects of a medication, are those conditions contagious?

Description : When cough, congestion, and other cold-like symptoms are the side effects of a medication, are those conditions contagious?

Last Answer : ***Totally off topic – how’s your son doing?

Ear congestion remedies?

Description : Ear congestion remedies?

Last Answer : Stop putting any kind of medicine or solutions in your ear, right away. Because you're getting dizzy and certain noises hurt, you could very well have a broken eardrum. You do not want to get it wet, ... and would get dizzy, along with certain sounds hurting my ears, which is why I urge you to go.)

How do I relieve ear congestion?

Description : How do I relieve ear congestion?

Last Answer : Get yourself some debrox at the local pharmacy if the issue is ear wax (or other debris). For inner ear issues, I suggest a decongestant, like Sudafed. FYI, I’m a doctor, for what its worth.

How can I get rid of ear congestion that I've had for a month?

Description : How can I get rid of ear congestion that I've had for a month?

Last Answer : Welcome to the collective. It is helpful if you pose a shorter question, and then put all the pertinent additional information in the Details section. I recommend you see your doctor or an ENT ... In that case, you would likely have some pain, a slight fever, or symptoms beyond lightheadedness.

What should I do if I have ear congestion and I need to fly in an airplane?

Description : What should I do if I have ear congestion and I need to fly in an airplane?

Last Answer : I get the same thing even when healthy. My ears are fucked. My old roommate suggested these. Not perfect but helped a lot. And normally on every landing I went deaf and it hurt like hell. Even with those it still sucks, but it sucks a lot less. edit :: drunk

I'm a kid with ear congestion and home alone.. Help?

Description : I'm a kid with ear congestion and home alone.. Help?

Last Answer : You seriously need to be seen by an ENT. Yesterday. Use technology to text them both until one of them realizes this is important, because if your eardrum ruptures you could wind up with permanent hearing loss. Insist on going to an urgent care center, or last resort the ER.