Juniper Juniper Certifications JN0-343 Questions & Answers

• Question 321:

  You review the current LSA database and you suspect that your LSA database contains stale or invalid database entries. You need to verify that your router is receiving LSAs from other routers in your network.

  Which action would you take to correct this problem?

  A. Purge the LSDB.

  B. Increase the max-age attribute for the LSDB.

  C. Decrease the max-age attribute for the LSDB.

  D. Disable and enable the interfaces.

  Correct Answer: A

• Question 322:

  Which three statements are correct about the processing order of firewall filters on a Junos device? (Choose three.)

  A. A router-based firewall filter applied to an RVI applies to switched packets in the same VLAN.

  B. A port-based firewall filter applied to an RVI does not apply to switched packets in the same VLAN.

  C. A router-based firewall filter applied to an RVI does not apply to switched packets in the same VLAN.

  D. The egress processing order is router, VLAN, port.

  E. The ingress processing order is port, VLAN, router.

  Correct Answer: CDE

• Question 323:

  What describes the action of the qualified-next-hop parameter in a configuration?

  A. It performs a recursive lookup on the destination network to confirm that the route is reachable.

  B. It allows for the configuration of independent preferences for static routes to the same destination.

  C. It periodically pings the next hop to validate its existence thereby assigning the static route to the forwarding table.

  D. It verifies the maximum hop count limit before validating the static route.

  Correct Answer: B

• Question 324:

  An IP-IP tunnel must meet which two requirements to function correctly? (Choose two.)

  A. The tunnel end points must have a valid route to each other.

  B. The tunnel end points must be distributed inside the IGP.

  C. A GRE tunnel must be established first to carry the IP-IP tunnel.

  D. All devices in between the tunnel end points must have a valid route to the tunnel end points.

  Correct Answer: AD

• Question 325:

  Which three statements are correct about a Junos firewall filter? (Choose three.)

  A. It examines each packet individually.

  B. It tracks connections and allows you to specify an action to take on all packets within a flow.

  C. It requires you to configure the Junos operating system to explicitly allow traffic in both directions for each connection that you want to permit.

  D. It permits the initial connection and then automatically permits bidirectional communications for this connection.

  E. It is stateless in nature and is used by the software to control traffic passing through the device.

  Correct Answer: ACE

• Question 326:

  

  In the exhibit, Areas 1.1.1.1 and 2.2.2.2 are configured as normal areas. R5 has an export policy that causes the RIP network prefixes to be announced through OSPF. Which three LSA types does R7 receive for the information advertised by R5? (Choose three.)

  A. Router (Type 1)

  B. Network (Type 2)

  C. Summary (Type 3)

  D. ASBRSum (Type 4)

  E. Extern (Type 5)

  Correct Answer: CDE

• Question 327:

  Which three steps must you complete for an aggregated Ethernet configuration on a switch? (Choose three.)

  A. Define the aggregated Ethernet interface under the [edit chassis] stanza.

  B. Configure the interface under the [edit protocols lacp] stanza.

  C. Configure the aggregated Ethernet interface.

  D. Assign physical interfaces to the aggregated Ethernet interface.

  E. Configure the minimum number of links required for the bundle to be operational.

  Correct Answer: ACD

• Question 328:

  What is the purpose of MAC limiting?

  A. MAC limiting limits the size of the CAM table and accelerates the aging of MAC addresses.

  B. MAC limiting sets a maximum rate on addresses learned over a period of time to minimize possible congestion caused by flooding.

  C. MAC limiting limits the number of source MAC addresses that may be learned on an interface and protects it from MAC spoofing.

  D. MAC limiting on a Layer 3 interface prevents a duplicate MAC address for a single IP address.

  Correct Answer: C

• Question 329:

  

  Router 2 is receiving a route to 10.0.0.0/8 from Router 4 and Router 5. What will Router 2 do with the routes shown in the exhibit?

  A. Router 2 will mark both routes active if both next hops are reachable.

  B. Router 2 will prefer the route received from Router 4 because of a lower origin code value.

  C. Router 2 will prefer the route that arrived first because neither route is necessarily preferable over the other.

  D. Router 2 will prefer the route received from Router 5 because it has a lower MED value.

  Correct Answer: B

• Question 330:

  Router R2 is having adjacency problems with Router R1. Router R2 is stuck in ExStart state.

  What is causing the problem?

  A. There is a physical and data link layer problem between R1 and R2.

  B. There is a misconfigured IP address on the R2 interface.

  C. The hello and dead intervals on R2 do not match R1.

  D. The interface MTU setting on R2 does not match R1.

  Correct Answer: D