Questões de QoS

Quiz
•
Computers
•
University
•
Hard
Wendell Rodrigues
FREE Resource
9 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
São 2 parâmetros que estão relacionados com a temporização da rede.
BER (Taxa de Erro de Bit)
Delay
Throughput
Packet Lose Rate
Round Trip Time
2.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
A confiabilidade se refere aos seguintes parâmetros da rede. (Selecionar 2).
Packet Lose Rate
Delay
Round Trip Time
Jitter
MTTF
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Em que campo do pacote IP podemos inserir informações de QoS?
TOS
TTL
IHL
COS
PCL
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
É um parâmetro do QoS que representa o tempo médio que demora os pacotes em chegar da origem até o destino.
Reliability
Throughput
Jitter
Latency
Timeliness
(Pontualidade)
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Métrica da rede que faz referência à proporção de pacotes que não chegam ao destino devido a erros do enlace.
VER
PLR
BER
Reliability
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pacotes de voz são recebidos em um fluxo contínuo por um telefone IP, mas devido a um congestionamento na rede, o atraso entre cada pacote varia e está causando quebras na conversação. Qual termo descreve a causa desta situação?
buffering
latency
queuing
jitter
Answer explanation
Jitter is the variation in the latency or delay of received packets. When data is sent, packets are sent in a continuous stream and are spaced evenly apart. Because of network congestion, the delay between each packet can vary instead of remaining constant.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Que algorítmo de filas tem somente uma única fila e trata todos os pacotes de forma igual?
FIFO
CBWFQ
WFQ
LLQ
Answer explanation
FIFO queuing sends packets out an interface in the order that they had arrived and does not make a decision about packet priority. All packets are treated equally.
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Um administrador de rede está implementando QoS com a habilidade de fornecer fila especial para tráfego de voz, de tal forma que ele será encaminhado antes de outros tráfegos. Que método de fila deveria ser a melhor escolha?
FIFO
WFQ
CBWFQ
LLQ
Answer explanation
Low latency queuing (LLQ) allows delay-sensitive data, such as voice traffic, to be defined in a strict priority queue (PQ) and to always be sent first before any packets in any other queue are forwarded.
9.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Quais são as características do modelo de QoS do tipo Best Effort? (escolha 2 respostas)
Não fornece garantias de entrega de pacotes.
Ele usa uma abordagem orientada a conexão com QoS.
Ele trata todos os pacotes da rede da mesma maneira.
Ele permite as aplicações sinalizarem suas necessidades de QoS.
Ele fornece tratamento preferencial para pacotes de voz.
Answer explanation
The best-effort QoS model provides no guarantees and it is commonly used on the Internet. The best-effort QoS model treats all network packets in the same way.
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