300-410 Free Practice Test

- (Exam Topic 2)
An engineer configured two routers connected to two different service providers using BGP with default attributes. One of the links is presenting high delay, which causes slowness in the network. Which BGP attribute must the engineer configure to avoid using the high-delay ISP link if the second ISP link is up?

1. A. LOCAL_PREF
2. B. MED
3. C. WEIGHT
4. D. AS-PATH

Correct Answer: A

- (Exam Topic 2)
Refer to the exhibit.

AS65510 iBGP is configured for directly connected neighbors. R4 cannot ping or traceroute network 192.168.100.0/24 Which action resolves this issue?

1. A. Configure R4 as a route reflector server and configure R1 as a route reflector client
2. B. Configure R1 as a route reflector server and configure R2 and R3 as route reflector clients
3. C. Configure R4 as a route reflector server and configure R2 and R3 as route reflector clients.
4. D. Configure R1 as a route reflector server and configure R4 as a route reflector client

Correct Answer: D
A route received from one iBGP peer will NOT be advertised to another iBGP peer. Therefore R4 could not receive advertisement for network 192.168.100.0/24. We can overcome this BGP limitation by configuring R1 as a route reflector server and R4 as a route reflector client so that R1 sends advertisements for R4.

- (Exam Topic 3)
Refer to the exhibit.

R1 is configured with IP SLA to check the availability of the server behind R6 but it kept failing. Which configuration resolves the issue?

1. A. R6(config)# ip sla responder
2. B. R6(config)# ip sla responder udp-echo ip address 10.10.10.1 port 5000
3. C. R6(config)# ip access-list extended DDOSR6(config ext-nac)# 5 permit icmp host 10.66 66.66 host 10.10.10.1
4. D. R6(config)# ip access-list extended DDOSR6(confg ext-nac)# 5 permit icmp host 10.10.10.1 host 10.66.66.66

Correct Answer: D
In this IP SLA tracking, we don’t need a IP SLA Responder so the command “ip sla responder” on R6 is not necessary.
We also notice that the ACL is blocking ICMP packets on both interfaces E0/0 & E0/1 of R6 so we need to allow ICMP from source 10.10.10.1 to destination 10.66.66.66.

- (Exam Topic 2)

Refer to the exhibit. A network administrator redistributed the default static route into OSPF toward all internal routers to reach to Internet. Which set of commands restores reachability to the Internet by internal routers?

1. A. router ospf 1default-information originate
2. B. router ospf 1network 0.0.0.0 0.0.0.0 area 0
3. C. router ospf 1redistribute connected 0.0.0.0
4. D. router ospf 1redistribute static subnets

Correct Answer: A

- (Exam Topic 1)
Refer to the exhibit.

What does the imp-null tag represent in the MPLS VPN cloud?

1. A. Pop the label
2. B. Impose the label
3. C. Include the EXP bit
4. D. Exclude the EXP bit

Correct Answer: A
The imp-null (implicit null) tag instructs the upstream router to pop the tag entry off the tag stack before forwarding the packet.
Note: pop means remove the top MPLS label