QoS (Quality of Service) Quiz (Online)

Which of the following is not a QoS Model?

Best Effort

DiffServ

IntServ

Loss

Which mathematical model is used by traffic policing mechanisms to meter traffic?

RED

Token Bucket

FIFO metering

Predictor or stacker

Which feature can you implement to reserve bandwidth for VoIP calls across the call path?

RSVP

Round robin

CBWFQ

Which of the following is NOT used for Quality of Service?

MPLS EXP bits

802.1P

802.1X

DSCP bits

What is a mechanism to control amount and rate of traffic sent to network?

Traffic Shaping

Traffic Flow

Traffic Congestion

Traffic Control

QoS is useful only if VOIP is used in the network:

FALSE

TRUE

In which byte of an IP packet can traffic be marked?

The ToS byte

The DSCP byte

The QoS byte

The CoS byte

What is the variation in delay of packets called?

Reliability

Bandwidth

Delay

How does DiffServ deliver QoS across the network?

DiffServ classifies and marks traffic at each node in the network

DiffServ tries to deliver a particular level of service on a per-flow basis across the network

When using DiffServ, the network tries to deliver a particular kind of service that is based on the QoS that is specified by each packet

DiffServ delivers a particular kind of service based on either a flow-based behavior or a per-hop behavior, depending on how the traffic was marked and classified at ingress

10.

The QoS requirements on the CE and PE router differ depending on which factor?

Whether or not the service provider is using an MPLS core

The SLAs offered by the service provider

Whether or not the CE router is managed by the service provider

Whether or not the PE router is managed by the service provider