Juniper Juniper Certification JN0-649 Questions & Answers

• Question 41:

  Referring to the exhibit, which LSA type is used toadvertise 192.168.1.0/24 to R5?

  

  A. Type 5

  B. Type 4

  C. Type 3

  D. Type 7

  Correct Answer: A

  Area-1 has no external connections. However, Area-1 has static route (172.16.31.0/24) that are not internal OSPF route. You can limit the external route advertisements to the area and advertise the static routes by designating the area an NSSA. In an NSSA, the ASBR (vMX1) generates NSSA external (Type 7) LSAs and floods them into the NSSA, where they are contained.

  Type-7 LSAs allow an NSSA to support the presence of ASBR and their corresponding external routing information. The ABR (vMX2) converts Type-7 LSAs into Type-5 External LSAs and leaks them to the other areas, but external routes from other areas are not advertised within the NSSA.

  An admin should check this and change it

  https://www.packetswitch.co.uk/configuring-junos-ospf-stub-and-nssa-areas/ https://www.juniper.net/documentation/us/en/software/junos/ospf/topics/ref/statement/nssa-edit-protocols-ospf.html

• Question 42:

  You are troubleshooting a BGP connection.

  Referring to the exhibit, which two statements are correct? (Choose two.)

  

  A. Packetfragmentation is preventing the session from establishing.

  B. The 192.168.1.5 peer has a misconfigured MD5 key.

  C. The ge-0/0/1 interface is disabled.

  D. The 192.168.1.4 peer has a misconfigured autonomous system number.

  Correct Answer: BD

• Question 43:

  Referring to the exhibit, how will router E quickly learn that the remote MAC addresses are no longer reachable through the router attached to the failed link?

  

  A. Router E receives Type 2 withdrawal messages from router D.

  B. Router E receives Type 1 withdrawal messages from router D.

  C. Router E receives Type 1 withdrawal messages from router C.

  D. Router E receives Type 2 withdrawal messages from router C.

  Correct Answer: B

• Question 44:

  You are deploying an 802.1X solution and must determine what would happen if clients are unable to re-authenticate to the RADIUS server.

  In this scenario, which configuration would provide access to the network if the supplicant is alreadyauthenticated?

  A. move

  B. permit

  C. deny

  D. sustain

  Correct Answer: D

• Question 45:

  Referring to the exhibit, which statement is correct?

  

  A. The route is learned from a multihop BGP session.

  B. The route is learned from only one neighbor.

  C. The route is learned from a multipath BGP session.

  D. The route is learned from three different neighbors.

  Correct Answer: B

• Question 46:

  Your EX Series switch has IP telephones and computers connected to a single switch port. You are considering implementing the voice VLAN feature to help with this setup. In this scenario, which two statements are correct? (Choose two.)

  A. Thevoice VLAN feature must be used with LLDP-MED to associate VLAN ID and 802.1p values with the traffic.

  B. The interfaces must be configured as access ports.

  C. Assigning the incoming voice and data traffic to separate VLANs enables the ability to prioritize the traffic using CoS.

  D. The voice VLAN feature will enable incoming tagged data and voice traffic to be associated with separate VLANs.

  Correct Answer: BC

• Question 47:

  You are asked to establish full connectivity between all devices in the BGP network.

  Referring to the exhibit, which two configuration changes will allow BGP route advertisements? (Choose two.)

  

  A. OnR2, include the loops 2 statement at the [edit protocols bgp family inet unicast] hierarchy.

  B. On R1 and R3, include the loops 2 statement at the [edit protocols bgp family inet unicast] hierarchy.

  C. On R1 and R3, include the advertise-peer-as statementat the [edit protocols bgp group external] hierarchy.

  D. On R2, include the advertise-peer-as statement at the [edit protocols bgp group external] hierarchy.

  Correct Answer: BD

  https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/ref/statement/advert ise-peer-as-edit-protocols-bgp.html

• Question 48:

  You are running OSPF as your IGP. The interfaces connecting two routers are in the ExStart state. You notice that something is incorrect with the configuration. Referring to the exhibit, which statement is correct?

  

  A. The subnet mask is incorrect.

  B. The MTU setting are incorrect.

  C. The interface type is incorrect.

  D. The IP addresses are incorrect.

  Correct Answer: B

• Question 49:

  Which address range is used for source-specific multicast?

  A. 239.0.0.0/8

  B. 233.0.0.0/8

  C. 232.0.0.0/8

  D. 224.2.0.0/16

  Correct Answer: C

  PIM SSM introduces new terms for many of the concepts in PIM sparse mode. PIM SSM can technically be used in the entire 224/4 multicast address range, although PIM SSM operation is guaranteed only in the 232/8 range (232.0.0/24 is

  reserved).

  The new SSM terms are appropriate for Internet video applications and are summarized in Table 1.

  https://www.juniper.net/documentation/us/en/software/junos/multicast/topics/concept/mult icast-pim-ssm.html

• Question 50:

  You recently committed a change to a router to reject OSPF routes sourced from area 10. However, you are still seeing area 10 routes in the routing table. Referring to the exhibit, which statement is correct?

  

  A. The OSPF protocol is first matched by find-ospf and accepted.

  B. The routes only timeout after 24 hours.

  C. The routes remain in the table until the device is rebooted.

  D. The routes remain in the table until the routing daemon is restarted.

  Correct Answer: A

  Once a route is accepted, no other terms in the routing policy are evaluated.