QoS (Quality of Service) Quiz (Online)

Which option describes the purpose of traffic policing?

It queues and then transmits traffic that exceeds the CIR

It remarks traffic that is below the CIR

It drops traffic that exceeds the CIR

It prioritizes routing protocol traffic

Quality of Service can alleviate which problems?

Dropped voice calls during periods of high network utilisation

Link Instability

Interface buffer overruns

Insufficient Bandwidth

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

RSVP

Round robin

CBWFQ

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

Traffic Shaping

Traffic Control

Traffic Congestion

Traffic Flow

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

The DSCP byte

The CoS byte

The QoS byte

The ToS byte

Which of the following QOS functions are performed on the incoming interface?

Packet Classification

Buffer Management

Congestion Management

Packet Scheduling

Which of the following are examples of metrics for QoS?

AIS, Latency, NEXT

Jitter, Delay, Packet-loss

SNR, Delay, WRED

Latency, WRED, Attenuation

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

Cos E

ToS

DSCP

IP Precedence

What happens if conflicting QoS policies are deployed to the same Router?

If multiple policies apply, no QoS policy will take precedence

If multiple policies apply, the more specific QoS policy takes precedence

If multiple policies apply, the first applied QoS policy takes precedence

None

10.

Which QoS model is the most widely used one today?

None of these

IntServ

DiffServ

Best-Effort