350-501 Free Practice Test

What is a characteristics of the Pipe model for MPLS QoS?

1. A. The same QoS policy is applied to all customer traffic on the egress PE.
2. B. If the outer EXP is changed, it is copied to the DSCP value.
3. C. The MPLS EXP bits are set by the CE.
4. D. The DSCP value determines how the packet is forwarded

Correct Answer: A

Refer to the exhibit.

Routers R2 and R3 are Level 1/Level 2 IS-IS routers that redistribute 198 18.x.x/24 prefixes to routers R5 and R6 In the Level 1 area R2 Is to be the preferred router for all redistributed prefixes in the Level 1 area. Which configuration sets this preference?

1. A. Option A
2. B. Option B
3. C. Option C
4. D. Option D

Correct Answer: A

Refer to the exhibit.

The CE router is peering with both PE routers and advertising a public prefix to the internet. Routing to and from this prefix will be asymmetric under certain network conditions, but packets must not be discarded. Which configuration must an engineer apply to the two PE routers so that they validate reverse packet forwarding for packets entering their Gi2 interfaces and drop traffic from the RFC1918 space?

1. A. ip verify unicast source reachable-via rx allow-default
2. B. interface GigabitEthernet 2ip verify unicast source reachable-via rx
3. C. ip verify unicast source reachable-via any allow-default interface GigabitEthernet 2
4. D. ip verify unicast source reachable-via any

Correct Answer: D

Refer to the exhibit.

An engineer is configuring IS-IS on ISP network. Which IS-IS configuration must an engineer implement on router AGG1 so that it establishes connectivity to router AGG6 via the BB3 core router?

1. A. router isis 100 metric-style narrowinterface GigabitEthernet 3 isis metric 10 level-2
2. B. router isis 100 metric-style wideinterface GigabitEthernet 3 isis metric 1500 level-2
3. C. router isis 100 metric-style narrowinterface GigabitEthernet 3 isis metric 10 level-1
4. D. router isis 100 metric-style wideinterface GigabitEthernet 3 isis metric 1500 level-1

Correct Answer: C

Which statement about Network Services Orchestrator (NSO) is true?

1. A. It is used only in service provider environments
2. B. It can be used only with XML coding
3. C. It uses YANG modeling language to automate devices
4. D. It must use SDN as an overlay for addressing

Correct Answer: C