Under which condition does congestion occur on a converged network with voice, video, and data traffic?

if the request for bandwidth exceeds the amount of bandwidth available

if a user downloads a file that exceeds the file limitation that is set on the server

if video traffic requests more bandwidth than voice traffic requests

if voice traffic latency begins to decrease across the network

What are two characteristics of voice traffic? (Choose two.)

It consumes few network resources.

It can tolerate latency up to 400 ms.

It is insensitive to packet loss.

What are two characteristics of voice traffic? (Choose two.)

Dropped voice packets are not retransmitted.

Voice traffic latency should not exceed 150 ms.

Voice traffic consumes lots of network resources.

Voice traffic is unpredictable and inconsistent.

Voice traffic requires at least 384 kbs of bandwidth.

What happens when a router interface ingress queue is full and new network traffic is received?

The router drops the arriving packets.

The router drops all traffic in the queue.

The router queues the received traffic and sends previously received traffic.

The router sends the received traffic immediately.

What happens when an edge router using IntServ QoS determines that the data pathway cannot support the level of QoS requested?

Data is not forwarded along the pathway.

Data is forwarded along the pathway using a best-effort approach.

Data is forwarded along the pathway using DiffServ.

Data is forwarded along the pathway using IntServ but not provided preferential treatment.

What happens when the memory queue of a device fills up and new network traffic is received?

The network device will drop the arriving packets.

The network device drops all traffic in the queue.

The network device queues the received traffic while sending previously received traffic.

The network device sends the received traffic immediately.

What role do network devices play in the IntServ QoS model?

Network devices ensure that resources are available before traffic is allowed to be sent by a host through the network.

Network devices are configured to service multiple classes of traffic and handle traffic as it may arrive.

Network devices provide a best-effort approach to forwarding traffic.

Network devices use QoS on a hop-by-hop basis to provide excellent scalability.

Which statement describes the QoS classification and marking tools?

Marking involves adding a value to a packet header.

Classification is performed after traffic is marked.

Classification should be done as close to the destination service as possible.

Marking involves identification of the QoS policy that should be applied to specific packets.

Module 9

Authored by Ricky Zhanghao

Computers

University

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when congestion occurs?

code delay

jitter

packet loss

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is caused by variation in delay?

congestion

jitter

packet loss

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the fixed amount of time it takes to transmit a frame from the NIC to the wire?

code delay

jitter

serialization delay

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the variable amount of time it takes for a frame to traverse the links between the source and destination?

code delay

propagation delay

serialization delay

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of traffic can be predictable and smooth?

data

video

voice

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of traffic cannot be retransmitted if lost?

data

video

voice

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of traffic is unpredictable, inconsistent, and bursty?

data

video

voice

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Module 9

What happens when congestion occurs?

What is caused by variation in delay?

What is the fixed amount of time it takes to transmit a frame from the NIC to the wire?

What is the variable amount of time it takes for a frame to traverse the links between the source and destination?

Which type of traffic can be predictable and smooth?

Which type of traffic cannot be retransmitted if lost?

Which type of traffic is unpredictable, inconsistent, and bursty?

Which type of traffic must receive a higher UDP priority?

Which type of traffic requires at least 384 Kbs of bandwidth?

Which type of traffic tends to consume a large portion of network capacity?

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