300-410 Free Practice Test

- (Exam Topic 3)
Refer to Exhibit.

PC2 is directly connected to R1. A user at PC2 cannot Telnet to 2001:db8:a:b::10. The user can ping 2001:db8:a:b::10 and receive DHCP-related information from the DHCP server. Which action resolves the issue?

1. A. Remove sequence 10 and put it back as sequence 25.
2. B. Remove sequence 20 and put it back as sequence 45.
3. C. Remove sequence 30 and put it back as sequence 5.
4. D. Remove sequence 40 and put it back as sequence 15.

Correct Answer: A

- (Exam Topic 3)
What does the MP-BGP OPEN message contain?

1. A. MPLS labels and the IP address of the router that receives the message
2. B. the version number and the AS number to which the router belongs
3. C. IP routing information and the AS number to which the router belongs
4. D. NLRI, path attributes, and IP addresses of the sending and receiving routers

Correct Answer: B

- (Exam Topic 3)
Refer to the exhibit.


The network operation team observes a traffic forwarding issue between R2 and R3:
Ping and traceroute of loopback IP address from R2 to R3 is successful.
iBGP peering in AS 65101 and AS 65201 is up. Which configuration resolves the issue?

1. A. Configure MD5 password authentication on R2.
2. B. Advertise R2 and R3 loopback IPs in AS 65101 and AS 65201.
3. C. Remove MD5 password authentication on R3.
4. D. Set up eBGP multihop on R2 and R3 routers.

Correct Answer: D

- (Exam Topic 3)
Which feature minimizes DoS attacks on an IPv6 network?

1. A. IPv6 Binding Security Table
2. B. IPv6 Router Advertisement Guard
3. C. IPv6 Prefix Guard
4. D. IPv6 Destination Guard

Correct Answer: D
The Destination Guard feature helps in minimizing denial-of-service (DoS) attacks. It performs
address resolutions only for those addresses that are active on the link, and requires the FHS binding table to be populated with the help of the IPv6 snooping feature.The feature enables the filtering of IPv6 traffic based on the destination address, and blocks the NDP resolution for destination addresses that are not found in the binding table. By default, the policy drops traffic coming for an unknown destination.
Reference: https://www.cisco.com/c/en/us/td/docs/routers/7600/ios/15S/configuration/guide/7600_1 5_0s_book/IPv6_Security.pdf

- (Exam Topic 3)
Refer to the exhibit.

A NOC team receives a ticket that data traffic from RA to RF is not forwarded when the link between the RC-RE path goes down. All routers learn loopback IP through the IGP protocol. Which configuration resolves?

1. A. RD(config)#router bgp B5201RD(config-router)# neighbor 10.10.10.2 update-source loopback 0
2. B. RD(config-router)# neighbor bgp 65101RB(config-router)# neighbor 10.10.10.3 ebgp-multihop 3
3. C. RB(config)# router bgp 65101RB(config)#neighbor 10.10.10.3 update-source loopback 0
4. D. RD(config)# router bgp 65201RDI(config-router)# neighbor 10.10.10.2 ebgp-multihop 3

Correct Answer: B