JN0-349 Online Practice Questions and Answers

You are a service provider and have multiple customers in a building.

You are installing a new switch that can host all of your customers. However, you would like to ensure that one customer cannot see or broadcast to another customer.

You would also like to have them use a common gateway IP address from the building.

What should be used to provide this access?

A. VLAN

B. private VLAN

C. filter-based VLAN

D. Layer 2 tunneling

Which two statements about Layer 2 loop prevention protocols are correct? (Choose two.)

A. RSTP distributes the current tree topology using the root bridge.

B. STP can take 30 to 50 seconds to respond to a topology change.

C. RSTP can take 30 to 50 seconds to respond to a topology change.

D. STP distributes the current tree topology using the root bridge.

Click the Exhibit button.

Referring to the exhibit, which statement is correct?

A. R1 and R2 are elected as DROthers.

B. R3 has the complete OSPF database.

C. R3 and R4 have an adjacency state of Full.

D. R4 is elected as the DR.

What are three requirements to ensure proper GRE or IP-IP tunnel routing? (Choose three.)

A. Keepalives must be used on stateless tunneling protocols.

B. Tunnel endpoints must have a route that directs traffic into the tunnel.

C. BGP must be used on intermediate devices.

D. Tunnel endpoints must have a valid route to the remote endpoint.

E. All intermediary devices must have a route to the tunnel endpoints.

Which statement is true about IP-IP tunnels?

A. The time-to-live value of the original packet Is decremented.

B. IP-IP tunnels are protocol agnostic.

C. The packet is encapsulated unchanged before entering the tunnel

D. The packet header is replaced before entering the tunnel

Click the Exhibit button.

Which statement is true about the configuration shown in the exhibit?

A. Only the next-hop-self export policy will be evaluated when routes are sent to neighbor 172.30.1.1.

B. Both the adv-aggregate and adv-custom export policies will be evaluated when routes are sent to neighbor 172.30.2.1.

C. Both the adv-aggregate and next-hop-self export policies will be evaluated when routes are sent to neighbor 172.30.1.1.

D. Only the adv-custom export policy will be evaluated when routes are sent to neighbor 172.30.2.1.

Which statement describes BFD?

A. BFD rapidly detects link failures.

B. BFD provides route loop protection.

C. BFD provides broadcast storm protection.

D. BFD provides high availability with multiple Routing Engines.

Click the Exhibit button.

You have created a GRE tunnel as shown in the exhibit. The router with tunnel endpoint A is dropping the packets originating from User A and destined to User B.

What would cause this problem?

A. Endpoint A has the internet-options gre-path-mtu-discovery parameter enabled.

B. User A requested fragmentation and Endpoint A has the clear-dont-fragment-bit parameter enabled.

C. Endpoint A is missing a policy statement that allows User A's traffic into the tunnel.

D. User A is sending maximum size default Ethernet frames with the DF bit enabled.

Click the Exhibit button.

A routing table contains multiple BGP routes to the same destination prefix. The route preference is the same for each route.

Referring to the exhibit, which route would be selected?

A. route B

B. route D

C. route A

D. route C

Which two statements are true about GRE tunnels on Junos devices? (Choose two.)

A. Only one GRE tunnel can be included for each logical unit.

B. Multiple GRE tunnels can be included for each logical unit.

C. GRE interfaces can include multiple logical units.

D. GRE interfaces can include only a single logical unit.