Juniper Juniper Certifications JN0-361 Questions & Answers

• Question 151:

  R8 is an OSPF router connected to both Area 0 and Area 2. Area 2 has been configured as a totally stubby area. Which three LSA types does R8 suppress from Area 2? (Choose three.)

  A. Router LSA

  B. Network LSA

  C. External LSA

  D. Summary LSA

  E. ASBR Summary LSA

  Correct Answer: CDE

• Question 152:

  You are asked to deploy OSPF between two routers over a broadcast medium.

  Which three fields in the OSPF hello packet must match? (Choose three.)

  A. hello interval

  B. options

  C. backup designated router

  D. network mask

  E. designated router

  Correct Answer: ABD

• Question 153:

  From the [edit routing-options] hierarchy, which command correctly configures an aggregate route for 64.18.128/17

  A. set aggregate route 64.18.128/17

  B. set summary route 64.18.128/17

  C. set route aggregate 64.18.128/17

  D. set route summary 64.18.128/17

  Correct Answer: A

  The set aggregate route 64.18.128/17 command correctly defines an aggregate route for 64.18.128/17. The default next hop for aggregate routes is reject, which sends an ICMP unreachable message when incoming traffic does not match one of the contributing routes.

• Question 154:

  Exhibit

  [edit]

  user@router# show routing-options

  static {

  router 0.0.0.0/0 {

  next hop 10.10.10.1;

  qualified-next hop 10.10.10.2 {

  preference 6;

  }

  }

  }

  aggregate {

  route 0.0.0.0/0;

  }

  generate {

  route 0.0.0.0/0;

  }

  Based on the exhibit, how will traffic using the 0.0.0.0 route exit the device?

  A. It will use the next hop 10.10.10.2 when available

  B. It will use the next hop 10.10.10.1 when available

  C. It will use the next hop of the generated route

  D. It will use the next hop of the aggregate route

  Correct Answer: B

  Based on the exhibit, all traffic using the 0.0.0.0 route will exit the device using the route with the lowest route preference. In this case it is the static route 0.0.0.0 with a next hop of 10.10.10.1, which has the default route preference of 5.

• Question 155:

  By default, which load-balancing algorithm does the Junos OS use for BGP routes?

  A. per-flow

  B. per-prefix

  C. per-packet

  D. per-neighbor

  Correct Answer: B

  By default, the Junos OS uses per-prefix load balancing for BGP routes.

• Question 156:

  A Junos device has a route in the inet.0 routing table with four valid physical next hops assigned to it.

  By default, how many next hops are entered into the forwarding table?

  B. 4

  C. 8

  D. 16

  Correct Answer: A

  By default, the Junos OS randomly selects one next hop to enter into the forwarding table. You can alter this behavior by using a policy.

• Question 157:

  You have been asked to identify the contributing prefixes for aggregate route 181.77.5/24. Which command will display this information?

  A. show route 181.77.5/24 detail

  B. show route 181.77.5/24

  C. show route 181.77.5/24 exact summary

  D. show route 181.77.5/24 extended

  Correct Answer: A

  The command "show route 181.77.5/24 detail" will display the contributing routes for route 181.77.5/24

• Question 158:

  Click the Exhibit button

  policy-options {

  policy-statement load-balance {

  then {

  load-balance per-packet;

  }

  }

  }

  When the configuration shown in the exhibit is applied, which routes in the forwarding table will begin load-

  balancing packet flows?

  A. all routes in the forwarding table

  B. all OSPF routes in the forwarding table

  C. all BGP routes in the forwarding table

  D. all RFC 1918 routes in the forwarding table

  Correct Answer: A

  Because the policy in the exhibit has no from statement, all routes in the forwarding table match the policy.

• Question 159:

  Your Junos device has a route in the inet.0 routing table with four valid physical next hops assigned to it. Which to events prompt an update to the information in the forwarding table for this route? (Choose two.)

  A. A fifth physical next hop is added to the route

  B. A configuration change is committed on the device

  C. A packet is forwarded towards the route destination D. One of the four physical next hops is removed from the route

  Correct Answer: AD

  Forwarding table information will be updated for this route when a fifth physical next hop is added to the route, or when one of the four physical next hops is removed from the route.

• Question 160:

  When displaying the forwarding table, which designation indicates that load balancing is working correctly?

  A. ucst

  B. msct

  C. ulst

  D. mlst

  Correct Answer: C

  You can use the command "show route forwarding-table" to check load balancing. The "ulst" forwarding table designation is used to indicate that load balancing isworking correctly. The "ulst" value indicates a list of unicast next hops. A packet sent to this next hop goes to any next hop in the list.