Juniper Juniper Certifications JN0-361 Questions & Answers

• Question 121:

  -- Exhibit -

  user@R1> show route protocol bgp

  inet.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)

  +

  = Active Route, - = Last Active, * = Both 200.200.0.0/24 *[BGP/170] 00:00:47, localpref 100 AS path: 65001 I > to 192.168.100.1 via ge-1/1/5.435 200.200.1.0/24 *[BGP/170] 00:00:47, localpref 100 AS path: 65001 I > to 192.168.100.1 via ge-1/1/5.435 200.200.2.0/24 *[BGP/170] 00:00:47, localpref 100 AS path: 65001 I > to 192.168.100.1 via ge-1/1/5.435 200.200.3.0/24 *[BGP/170] 00:00:47, localpref 100 AS path: 65001 I > to 192.168.100.1 via ge-1/1/5.435

  user@R2> show route 200.200/16 inet.0: 36 destinations, 36 routes (36 active, 0 holddown, 0 hidden) Restart Complete

  +

  = Active Route, - = Last Active, * = Both 200.200.0.0/24 *[Static/5] 00:09:12 Reject 200.200.1.0/24 *[Static/5] 00:09:12 Reject 200.200.2.0/24 *[Static/5] 00:09:12

  Reject

  200.200.3.0/24 *[Static/5] 00:09:12

  Reject

  200.200.4.0/24 *[Static/5] 00:09:12

  Reject

  user@R2> show configuration protocols bgp

  export export-200;

  group c5 {

  neighbor 192.168.100.2 {

  export export-200.200;

  peer-as 65002;

  }

  }

  user@R2> show configuration policy-options policy-statement export-200.200

  term 1 {

  from {

  route-filter 200.200.0.0/22 longer;

  }

  then accept;

  }

  user@R2> show configuration policy-options policy-statement export-200

  term 1 {

  from {

  route-filter 200.200.0.0/21 longer;

  }

  then accept;

  }

  Click the Exhibit button.

  R2 is exporting static routes to R1 using BGP. R1 is not receiving one of the five static routes that is

  configured on R2.

  Referring to the exhibit, what should be changed under the BGP configuration to resolve this issue?

  A. Delete the global export policy.

  B. Delete the neighbor export policy.

  C. Move policy export-200 to the group level.

  D. Move policy export-200.200 to the group level.

  Correct Answer: B

• Question 122:

  Which command verifies that graceful Routing Engine Switchover (GRES) is operational?

  A. show system switchover on the master RE

  B. show system switchover on the backup RE

  C. show task replication on the master RE

  D. show task replication on the backup RE

  Correct Answer: B

  The show system switchover command, which is used to verify whether graceful Routing Engine switchover is enabled and that the databases are synchronized, must be issued on the backup RE to get the desired output.

• Question 123:

  Which statement is true regarding IS-IS?

  A. IS-IS PDUs are also known as LSAs

  B. IS-IS PDUs are transmitted at Layer 3

  C. All IS-IS routers run a single routing algorithm

  D. IS-IS PDUs are hosts that send and receive packets

  Correct Answer: C

• Question 124:

  What is the default metric for IS-IS interfaces?

  A. 1

  B. 10

  C. it depends on the bandwidth

  D. it depends on the link type

  Correct Answer: B

  The protocol IS-IS does have an ability to use reference bandwidth to dynamically calculate link costs, but the default behavior has a value of 10 assigned to all transit interfaces.

• Question 125:

  

  In the exhibit, R3 and R4 have the level 2 disable statements applied to their global IS-IS configuration Which two statements are true regarding R2?

  A. R2 has a Level 1 adjacency with R1

  B. R2 has a Level 2 adjacency with R1

  C. R2 has a Level 1 adjacency with R4

  D. R2 has a Level 2 adjacency with R4

  Correct Answer: BC

  To form IS-IS adjacencies between Level 1 routers, devices must have Level 1 enabled on their facing interfaces. To form adjacencies with devices in other areas, the facing interfaces must be configured for Level 2.

• Question 126:

  How can you control the selection of the designated intermediate system (DIS) on a specific link in an IS-IS network?

  A. Configure the interface as passive

  B. Configure a priority on the interface

  C. Configure the hello interval on the interface

  D. DIS selection is random in the Junos OS

  Correct Answer: B

  The highest priority (and then highest MAC address) is the criterion used to select the DIS. This priority is set on the interface in the IS-IS protocol configuration.

• Question 127:

  Which statement correctly describes the metric used for IS-IS?

  A. The IS-IS metric is calculated based on a reference bandwidth of 10 Mbps by default

  B. By default, IS-IS interface routes are assigned a metric of 10, regardless of actual link speed

  C. By default, the Junos OS sends only wide metrics to allow any single link to have a metric as high as

  D. For proper operation, the same metric value should be specified at both ends of an IS-IS link

  Correct Answer: B

  The protocol IS-IS does have an ability to use reference bandwidth to dynamically calculate link costs, but the default behavior has a value of 10 assigned to all transit interfaces.

• Question 128:

  Which command will display the number of IS-IS packets sent and received on a Junos device?

  A. show isis packets

  B. show isis spf log

  C. show isis statistics

  D. show isis exchanges

  Correct Answer: C

  The "show isis statistics" command verifies whether the device is sending and receiving IS-IS packets.

• Question 129:

  By default, what is the maximum metric that can be advertised for any interface in IS-IS?

  A. 1

  B. 10

  C. 63

  D. 1023

  Correct Answer: C

  By default, any single link can have a maximum metric value of 63. Wide metrics allow for higher metric values, and can be enabled on a per-level basis.

• Question 130:

  In the Junos OS, where do you configure the area value for IS-IS?

  A. [edit protocols isis level 2]

  B. [edit routing-options]

  C. [edit protocols isis level 1]

  D. [edit interfaces lo0]

  Correct Answer: D

  To enable IS-IS on a Junos device, one of the parameters you must configure is the network entity title (NET), which is usually set on the lo0 interface. The NET contains the area ID, system ID, and selector.