300-515 Free Practice Test

- (Exam Topic 2)
A network architect is troubleshooting the L2TPv3 tunneling security due to the untrusted nature of the underlaying network. Which two L2TPv3 features does the architect deploy to address the ongoing issues? (Choose two.)

1. A. TCP MD5 authentication
2. B. control message hashing
3. C. CHAP authentication
4. D. control message rate limiting
5. E. asymmetric mutual authentication with PSK

Correct Answer: BC

- (Exam Topic 3)
With Layer 3 MPLS VPN implementations on Cisco IOS XR PE routers, an interface is assigned to a VRF using the vrf command in which configuration mode?

1. A. RP/0/RP0/CPU0:PE(config-bgp)#
2. B. RP/0/RP0/CPU0:PE(config-if)#
3. C. RP/0/RP0/CPU0:PE(config-bgp-af)#
4. D. RP/0/RP0/CPU0:PE(config-vrf)#

Correct Answer: B
Reference:
https://www.cisco.com/c/en/us/td/docs/ios_xr_sw/iosxr_r3-7/mpls/configuration/guide/gc37v3.html

- (Exam Topic 1)
The CTO of a company requires the support of a network consultant to deliver an MPLS solution without resigning to a certain degree of redundancy and scalability. Which solution effectively scales to hundreds or thousands of sites?

1. A. L2VPN with the broadcast traffic processed at the ingress PE.
2. B. L3VPN with direct LSP connectivity between all PEs.
3. C. L2VPN by encapsulating multiple frame formats with interworking.
4. D. L3VPN using a hierarchical topology of N-PEs and U-PEs.

Correct Answer: D

- (Exam Topic 3)
While implementing Layer 3 MPLS VPN, which feature should an engineer use at the PEs to transform the customer IPv4 prefixes into a unique 96-bit prefix

1. A. RT
2. B. VC ID
3. C. RD
4. D. PW ID

Correct Answer: C

- (Exam Topic 2)
Which mechanism reduces the network flooding caused by host ARP learning behavior?

1. A. ARP suppression
2. B. storm control
3. C. root guard
4. D. BPDU guard

Correct Answer: A
Reference: https://www.cisco.com/c/en/us/products/collateral/switches/nexus-7000-series-switches/white- paper-c11-735015.html