QoS (Quality of Service) Quiz (Online)

Which of the following is a Congestion Management Techniques?

Jitter

TOS Byte

First-in First-out

IP Precedence

Which type of technique is First-in-Last-out?

Traffic Control

Traffic Shaping

Traffic Congestion

Traffic Flow

Which one is not a QoS requirement for voice?

Loss less than 1 percent

Jitter less than 30 ms

Bandwidth 80kbps per call minimum for all codecs

Latency less that 150 ms

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

The DSCP byte

The CoS byte

The ToS byte

The QoS byte

Do QoS policies apply to the sender & receiver of traffic?

No, QoS policies must be applied only on the receiver

None

No, QoS policies must be applied only on the sender

Yes, QoS policies need to be applied to both

Which 8-bit field exists in IP packet for QoS?

DSCP

Cos E

ToS

IP Precedence

In which service do we try to avoid traffic congestion?

Both congestion control and quality of service

Congestion control

Neither congestion control nor quality of service

Quality of service

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

FALSE

TRUE

Which option describes the purpose of traffic policing?

It queues and then transmits traffic that exceeds the CIR

It prioritizes routing protocol traffic

It drops traffic that exceeds the CIR

It remarks traffic that is below the CIR

10.

Which QoS model is the most widely used one today?

IntServ

DiffServ

None of these

Best-Effort