Juniper Juniper Certifications JN0-643 Questions & Answers

• Question 21:

  You need to enable authentication for your multiarea OSPF network. In this scenario, which three statements are correct? (Choose three)

  A. MDS and simple authentication types are mutually exclusive

  B. IPsec is only supported on OSPFv3

  C. OSPF authentication is performed at the area level, and all devices in the same area must use same type of authentication and same password

  D. IPsec transport mode is supported

  E. IPsec tunnel mode is supported

  Correct Answer: ACD

• Question 22:

  The network administrator wants the ports on an EX series switch to allow both tagged and untagged frames to be followed. Tagged FRAMES should be associated with their tagged VLAN. While untagged frames should be associated with a preconfigured VLAN. In this scenario, which statement is true?

  A. The INTERFACE PORT MODE should be configured as mixed mode two allow both trunk and access port modes, untagged frames will belong to the default VLAN configured on that port.

  B. An Interface can be configured as an access port or a TRUNK Port ,but it cannot accept both tagged and untagged frames.

  C. The interface port mode should be configured as an access port with a VLAN id frames that enter the port wid a VLAN tag already assigned will override the access port VLAN id.

  D. The interface port mode should be configured as a trunk port, untagged frames will belong to the native vlan id configured on that post.

  Correct Answer: D

• Question 23:

  Which 802.1x supplicant mode allows multiple supplicants to be connected to a port one requires each device to authenticate separately?

  A. single

  B. smgle secure

  C. MAC RADIUS

  D. Multiple

  Correct Answer: D

• Question 24:

  Which statement is correct about the MSTP?

  A. MSTP enables mapping multiple independent spanning tree instances onto one physical.topology

  B. MSTP enables dynamic discover or Iayer2 neighbors

  C. MSTP dynamically manages VLAN registration in the LAN

  D. MSTP uses stacked VLAN tags to extend a layer 2 Ethernet connection between multiple sides

  Correct Answer: A

• Question 25:

  The network is configured with IPv4 and IPv6 addressing. The network administrator does not want the overhead of managing OSPFv2 and 0SPFv3 for route advertisement. Which statement is true in this scenario?

  A. OSPFv2 can advertise IPv6 routes by using opaque LSAs

  B. OSPFv3 can advertise IPv4 routes by using route redistribution policies

  C. OSPFv2 and OSPFv3 must run on the network to advertise IPv6 and IPv4 routes

  D. OSPFv3 can advertise IPv4 routes by configuring protocol realms

  Correct Answer: D

• Question 26:

  You enable the captive portal authentication method on your juniper switch. There is no guest-Vlan configured in this scenario, what will happen when the RADIUS server fails to respond?

  A. Access will be allow to only VLAN 4096

  B. All access will be allowed

  C. Access will be allowed to only VLAN 1

  D. Access will not be allowed to any VLAN

  Correct Answer: D

• Question 27:

  Which AS path regular expression will match the AS path to AS 50 as shown in the exhibit?

  

  A. 20+30+40+50+

  B. 20 30*$

  C. 20 30 40 50

  D. 20|30|40|50

  Correct Answer: C

• Question 28:

  Your company has EBGP peering sessions to multiple service providers. Your BGP route table contains a large number of routes with prefixes with 30 lengths. The service provider you are peering with require any advertised routes to be no longer than 24. In this scenario which 2 solution meet the service provider requirement? (Choose two)

  A. Configure a prefix list that contains all of the more specific routes

  B. configure an aggregate route that contains of the more specific routes

  C. configure a route policy that restricts all of the more specific routes. And advertise only the aggregate route

  D. Configure a firewall filter that restricts all of the more specific routes, and advertise only the prefix list

  Correct Answer: BC

• Question 29:

  Referring to the exhibit, All hosts have individually authenticated using 802.IX.

  

  Which supplicant mode is used on the switch?

  A. MAC RADIUS

  B. MULTIPLE

  C. SINGLE

  D. SINGLE SECURE

  Correct Answer: B

• Question 30:

  You are attempting to configure an internal BGP peer on a Junos device. However the configuration failed to commit. Which two actions would solve this problem? (Choose two)

  A. set the BGP group type to internal

  B. set the BGP group peer-as to 65501

  C. set the BGP group description to intern

  D. set the BGP group peer-as to 65502

  Correct Answer: AB