Refer to the exhibit. After implementing a new design for the network, a technician reviews the pictures CLI output as part of the MOP.
Which two elements describe what the technician can ascertain from the ImpNull output? (Choose two.)

Refer to the exhibit.

A network operator must configure CSR1 interlaces GigabitEihernet2 and GigabitEthemet to rewrite VLAN tags 12 and 21 for traffic between R1 and R2 respectively. Which configurator accomplishes this task?
A)

B)

C)

Which QoS model allows hosts to report their QoS needs to the network?

Reter to the exhibit. ISP A provides VPLS services and DDoS protection to Company XYZ to connect their branches across the North America and Europe regions. The uplink from the data center to the ISP is 100 Mbps. The Company XYZ security team asked the ISP to redirect ICMP echo requests, which are currently going to the web server, to a new local security appliance.
Which configuration must an ISP engineer apply to router R2 to redirect the ICMP traffic?

Refer to the exhibit:

A network engineer is implementing QoS services. Which two statements about the QoS-group keyword on Cisco IOS XR 3re true? (Choose two )