Juniper JN0-643 Online Practice Questions and Exam Preparation

Juniper JN0-643 Online Questions & Answers

• Question 111:

  A network administrator is configuring CoS on a switch and assigns forwarding classes shown below:

  class-of-service {

  forwarding-classes {

  class best-effort queue-num 0;

  class bulk-data queue-num 1;

  class critical queue-num 3;

  class voice queue-num 6;

  class call-signal queue-num 3;

  }

  }

  Based on the configuration, which action prioritizes call-signal traffic over critical traffic?

  A. Assign call-signal traffic and critical traffic to different schedulers.
  B. Assign call-signal traffic and critical traffic to different scheduler maps.
  C. Assign a loss priority of high to the packets in the critical forwarding class and set priority high in the scheduler configuration.
  D. Assign a loss priority of high to the packets in the critical forwarding class and configure drop profiles in the scheduler configuration.
  D. Assign a loss priority of high to the packets in the critical forwarding class and configure drop profiles in the scheduler configuration.

• Question 112:

  You just configured an interface as an access port and it is up and passing traffic. However, you notice that all traffic transiting this interface is being classified as best effort. Which default BA classifier is causing this behavior?

  A. ieee8021p-default
  B. ieee8021p-untrust
  C. dscp-default
  D. dscp-ipv6-default
  B. ieee8021p-untrust

• Question 113:

  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
  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

• Question 114:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  In the exhibit, the 10.100/16 prefix is introduced at autonomous system 1 (AS1) and propagated through to AS3. Router A in AS3 receives two different paths to these prefixes, one through AS2 and the other through AS4. No BGP attributes

  have been altered.

  Which path would router A prefer for the 10.100/16 prefix?

  A. the route with the lowest interface address for the EBGP peering session
  B. the route with the lowest local preference
  C. the route to the EBGP peer that has the lowest RID
  D. the route from the EBGP peer that arrived first
  D. the route from the EBGP peer that arrived first

• Question 115:

  You are implementing PoE on your EX Series switch to provide power to your VoIP phones. You have a device that does not provide its class information to the switch.

  Which power class is assigned for this device?

  B. 1
  C. 2
  D. 3
  A

• Question 116:

  Your enterprise network is providing layer 2 connectivity between remote-sites using Q-in-Q tunneling. A customer wants to ensure their connection through your network is also participating in their spanning free topology. In this scenario, which solution must be used?

  A. you must configure the Q in Q tunnel to use L2PT to tunnel STP packets
  B. you must configure the same isolation ID on both sides of the tunnel
  C. you must configure spanning tree on the interfaces connected to the customers sites
  D. you must configure spanning tree to tunnel packets
  A. you must configure the Q in Q tunnel to use L2PT to tunnel STP packets

• Question 117:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  Referring to the exhibit, and given that no other BGP manipulation has been configured, how is traffic influenced from R1 to R3?

  A. Traffic is load-balanced across both paths.
  B. Traffic is preferred through AS 2493.
  C. Traffic is preferred through AS 8841.
  D. Traffic prefers the path with the lowest local preference.
  C. Traffic is preferred through AS 8841.

• Question 118:

  You are receiving the same prefix from multiple EGBP peers in different autonomous systems. Which two configurations enable your systemto load balance across all received instances?

  A. multilpath multiple-as
  B. policy-statement LB{ Then{ Load-balance per-flow; } }
  C. policy-statement LB{ Then{ Load-balance per-packet; } }
  D. Multihop
  A. multilpath multiple-as
  C. policy-statement LB{ Then{ Load-balance per-packet; } }

• Question 119:

  Which statement is true about LLDP?

  A. It allows you to split a broadcast domain into multiple isolated broadcast subdomains.
  B. It dynamically manages VLAN registration in a LAN.
  C. It maintains a separate spanning-tree instance for each VLAN.
  D. It is a Layer 2 protocol that facilitates network and neighbor discovery.
  D. It is a Layer 2 protocol that facilitates network and neighbor discovery.

• Question 120:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  AS4 is using the default path to get to AS1. This path is not modified by any of the ASs shown in the exhibit. AS1 wants to influence this path so that traffic from AS4 comes through AS3.

  Where do you apply the policy shown in the exhibit?

  A. AS1
  B. AS2
  C. AS3
  D. AS4
  A. AS1