Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Networking 3 > M9 (QoS Concepts) > Flashcards

M9 (QoS Concepts) Flashcards

1
Q

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

Serialization Delay

Propagation Delay

Code Delay

A

Propagation delay

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What happens when congestion occurs?

Packet Loss

Jitter

Code Delay

A

Packet Loss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

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

Serialization Delay

Jitter

Code Delay

A

Serialization Delay

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is caused by variation in delay?

Congestion

Packet Loss

Jitter

A

Jitter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

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

Voice

Video

Data

A

Data

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

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

Voice

Video

Data

A

Video

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

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

Voice

Video

Data

A

Video

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which type of traffic can be predictable and smooth?

Voice

Video

Data

A

Voice

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which type of traffic cannot be retransmitted if lost?

Voice

Video

Data

A

Voice

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which type of traffic must receieve a higher UDP priority?

Voice

Video

Data

A

Voice

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which queuing algorithm simultaneously schedules interactive traffic to the front of ta queue to reduce response time?

FIFO

WFQ

CBWFQ

LLQ

A

WFQ

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which queuing algorithm provides support for user-defined traffic classes?

FIFO

WFQ

CBWFQ

LLQ

A

CBWFQ

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which queuing algorithm is effective for large links that have little delay and minimal congestion?

FIFO

WFQ

CBWFQ

LLQ

A

FIFO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which queuing algorithm classifies traffic into different flows based on packet header addressing?

FIFO

WFQ

CBWFQ

LLQ

A

WFQ

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which queuing algorithm allows delay-sensitive data such as voice to be sent before packets in other queues?

FIFO

WFQ

CBWFQ

LLQ

A

LLQ

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which queuing algorithm applies priority, or weights, to identify traffic and classify it?

FIFO

WFQ

CBWFQ

LLQ

A

WFQ

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which QoS model provides per-request policy admission control?

Best effort

Integrated services

Differential services

A

Integrated services

18
Q

Which Qos model requires no special QoS mechanisms?

Best effort

Integrated services

Differential services

A

Best effort

19
Q

Which QoS model provides many different levels of quality?

Best effort

Integrated services

Differential services

A

Differential services

20
Q

Which QoS model uses explicit end-to-end resource admission control?

Best effort

Integrated services

Differential services

A

Integrated services

21
Q

Which QoS model is the most scalable?

Best effort

Integrated services

Differential services

A

Differential services

22
Q

Which detects when traffic rates reach a configured maximum rate and drops excess traffic?

Traffic policing

Traffic shaping

Classification

A

Traffic policing

23
Q

Which determines what class of traffic packets or frames belong to?

Marking

Classification

Traffic shaping

A

Classification

24
Q

Which adds a value to the packet header?

Marking

Classification

802.1Q

25
Which provides buffer management and allows TCP traffic to throttle back before buffers are exhausted? Traffic policing 802.1Q WRED
WRED
26
Which retains excess packets in a queue and then schedules the excess for later transmission over increments of time? WRED Traffic policing Traffic shaping
Traffic shaping
27
What is the term used to indicate a variation of delay? Latency Serialization delay Speed mismatch Jitter
Jitter
28
A network engineer performs a ping test and receives a value that shows the time it takes for a packet to travel from a source to a destination device and return. Which term describes the value? Jitter Latency Priority Bandwidth
Latency
29
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 provide a best-effort approach to forwarding traffic. Network devices are configured to service multiple classes of traffic and handle traffic as it may arrive. Network devices use QoS on a hop-by-hop basis to provide excellent scalability.
Network devices ensure that resources are available before traffic is allowed to be sent by a host through the network.
30
Which device would be classified as a trusted endpoint? Switch Router Firewall IP phone
IP phone
31
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 video traffic requests more bandwidth than voice traffic requests If voice traffic latency begins to decrease across the network If a user downloads a file that exceeds the file limitation that is set on the server
If the request for bandwidth exceeds the amount of bandwidth available
32
Which type of traffic does Cisco recommend be placed in the strict priority queue (PQ) when low latency queuing (LLQ) is being used? Video Data Voice Management
Voice
33
Which model is the only QoS model with no mechanism to classify packets? IntServ DiffServ Best-effort Hard QoS
Best-effort
34
What happens when the memory queue of a device fills up and new network traffic is received? The network device sends the received traffic immediately. 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 netowk device will drop the arriving packets.
35
What are two characteristics of voice traffic? (Choose two.) It is delay sensitive. It is bursty. It can tolerate latency up to 400 ms. It consumes few network resources. It is insensitive to packet loss.
(It is delay sensitive) and (It consumes few network resources)
36
Which QoS model is very resource intensive and provides the highest guarantee of QoS? DiffServ Best-effort IntServ Soft QoS
IntServ
37
What happens when an edge router using IntServ QoS determines that the data pathway cannot support the level of QoS requested? Data is forwarded along the pathway using a best-effort approach. Data is forwarded along the pathway using DiffServ. Data is not forwarded along the pathway. Data is forwarded along the pathway using IntServ but not provided preferential treatment.
Data is not forwarded along the pathway
38
In QoS models, which type of traffic is commonly provided the most preferential treatment over all other application traffic? Voice traffic Email Web traffic File transfers
Voice traffic
39
Which queuing mechanism supports user-defined traffic classes? FIFO CBWFQ WFQ FCFS
CBWFQ
40
What mechanism compensates for jitter in an audio stream by buffering packets and then replaying them outbound in a steady stream? Digital signal processor Playout delay buffer Voice codec WFQ
Playout delay buffer

Networking 3 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions