300-410 Free Practice Test

- (Exam Topic 1)
Refer to the exhibit.

An engineer is trying to redistribute OSPF to BGP, but not all of the routes are redistributed. What is the reason for this issue?

1. A. By default, only internal routes and external type 1 routes are redistributed into BGP
2. B. Only classful networks are redistributed from OSPF to BGP
3. C. BGP convergence is slow, so the route will eventually be present in the BGP table
4. D. By default, only internal OSPF routes are redistributed into BGP

Correct Answer: D
If you configure the redistribution of OSPF into BGP without keywords, only OSPF intra-area and inter-area routes are redistributed into BGP, by default.
You can redistribute both internal and external (type-1 & type-2) OSPF routes via this command: Router(config-router)#redistribute ospf 1 match internal external 1 external 2
Reference:
https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/5242-bgp-ospf-redis.html

- (Exam Topic 1)
Refer to the exhibit.

Redistribution is enabled between the routing protocols, and nowPC2 PC3, and PC4 cannot reach PC1. What are the two solutions to fix the problem? (Choose two.)

1. A. Filter RIP routes back into RIP when redistributing into RIP in R2
2. B. Filter OSPF routes into RIP FROM EIGRP when redistributing into RIP in R2.
3. C. Filter all routes except RIP routes when redistributing into EIGRP in R2.
4. D. Filter RIP AND OSPF routes back into OSPF from EIGRP when redistributing into OSPF in R2
5. E. Filter all routes except EIGRP routes when redistributing into OSPF in R3.

Correct Answer: AC
Even PC2 cannot reach PC1 so there is something wrong with RIP redistribution in R2. Because RIP has higher Administrative Distance (AD) value than OSPF and EIGRP so it will be looped when doing mutual redistribution.

- (Exam Topic 3)

Refer to the exhibit. A customer reports that networks in the 10.0.1.0/24 space do not appear in the RIP database. What action resolves the issue?

1. A. Remove summarization of 10.0.0.078.
2. B. Permit 10.0.1.0/24 address in the ACL.
3. C. Remove ACL on R1 blocking 10.0.1.0/24 network.
4. D. Configure 10.0.1.0/24 network under RIP.

Correct Answer: A

- (Exam Topic 1)
Which label operations are performed by a label edge router?

1. A. SWAP and POP
2. B. SWAP and PUSH
3. C. PUSH and PHP
4. D. PUSH and POP

Correct Answer: D
A label edge router (LER, also known as edge LSR) is a router that operates at the edge of an MP and acts as the entry and exit points for the network. LERs push an MPLS label onto an incoming packet and pop it off an outgoing packet.
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/nx-os/mpls/configuration/guide/mpls_cg/mp_mp

- (Exam Topic 1)
Refer to the exhibit.

An engineer has configured DMVPN on a spoke router. What is the WAN IP address of another spoke router within the DMVPN network?

1. A. 172.18.46.2
2. B. 192.168.1.4
3. C. 172.18.16.2
4. D. 192.168.1.1

Correct Answer: A
From the output we can see there are 2 NHRP Peers. The first one with the NBMA Address of 172.18.16.2 and the “Attribute” (Attrb) of Static (S) so we can deduce it is the Hub device. Therefore the second one must be the remaining Spoke device with the attribute of Dynamic (D).

--> S - Static, D - Dynamic, I - Incomplete N - NATed, L - Local, X - No Socket
# Ent --> Number of NHRP entries with same NBMA peer
NHS Status: E --> Expecting Replies, R --> Responding, W --> Waiting UpDn Time --> Up or Down Time for a Tunnel
========================================================================
==
Interface: Tunnel1, IPv4 NHRP Details Type:Spoke, NHRP Peers:2,
# Ent Peer NBMA Addr Peer Tunnel Add State UpDn Tm Attrb
----- --------------- --------------- ----- -------- ----- 1 44.44.44.4 192.168.100.254 UP 00:03:40 S
1 12.12.12.2 192.168.100.2 UP 00:03:20 D