Juniper JN0-649 Online Practice Questions and Exam Preparation

Juniper JN0-649 Online Questions & Answers

• Question 31:

  You enable the Multiple VLAN Registration Protocol (MVRP) to automate the creation and management of virtual LANs.

  Which statement is correct in thisscenario?

  A. The forbidden mode does not register or declare VLANs.
  B. When enabled, MVRP affects all interfaces.
  C. Timers dictate when link state changes are propagated.
  D. MVRP works with RSTP and VSTP.
  A. The forbidden mode does not register or declare VLANs.

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  Explanation/Reference:

  The forbidden mode does not register or declare VLANs. You can change the registration mode of a specific interface to forbidden. An interface in forbidden registration mode does not participate in MVRP even if MVRP is enabled on the switch. https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/mvrp.html MVRP is disabled by default on the switches and, when enabled, affects only trunk interfaces. Once you enable MVRP, all VLAN interfaces on the switch belong to MVRP (the default normal registration mode) and those interfaces accept PDU messages and send their own PDU messages. forbidden--The interface does not register or declare VLANS (except statically configured VLANs).

• Question 32:

  Which three statements are correct about EVPN route types? (Choose three.)

  A. Type 3 routes carry replication information.
  B. Type 2 routes carry endpoint MAC address information.
  C. Type 2 routes carry endpoint IP address information.
  D. Type 5 routes carry replication information.
  E. Type 1 routes carry endpoint MAC address information.
  A. Type 3 routes carry replication information.
  B. Type 2 routes carry endpoint MAC address information.
  C. Type 2 routes carry endpoint IP address information.

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  Explanation/Reference:

  Cisco explains it better: The EVPN control plane advertises the following types of information:

  Route type 1 ?This is an Ethernet Auto-Discovery (EAD) route type used to advertise Ethernet segment identifier, Ethernet Tag ID, and EVPN instance information. EAD route advertisements may be sent for each EVPN instance or for each

  Ethernet segment.

  Route type 2 ?This advertises endpoint reachability information, including MAC and IP addresses of the endpoints or VTEPs.

  Route type 3 ?This performs multicast router advertisement, announcing the capability and intention to use ingress replication for specific VNIs.

  Route type 4 ?This is an Ethernet Segment route used to advertise the Ethernet segment identifier, IP address length, and the originating router's IP address.

  Route type 5 ?This is an IP prefix route used to advertise internal IP subnet and externally learned routes to a VXLAN network.

• Question 33:

  You are troubleshooting connectivity between an EVPN spine switch configured as a route reflector and a leaf node with an IP address of 10.30.100.6. Referring to the exhibit, what is the problem?

  

  A. The neighbor 10.30.100.3 statement is missing from leaf1's configuration.
  B. The spinenode is not configured for the family inet NLRI.
  C. The neighbor 10.30.100.6 statement is missing from spine1's configuration.
  D. The leaf node is not configured for the family evpn NLRI.
  B. The spinenode is not configured for the family inet NLRI.

• Question 34:

  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.
  B. The 192.168.1.5 peer has a misconfigured MD5 key.
  D. The 192.168.1.4 peer has a misconfigured autonomous system number.

• Question 35:

  Which three MSTP parameters must match on all switches in the same MST region? (Choose three.)

  A. forwarding delay
  B. bridge priority
  C. revision number
  D. MSTI-to-VLAN mapping
  E. configuration name
  C. revision number
  D. MSTI-to-VLAN mapping
  E. configuration name

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  Explanation/Reference:

  https://www.juniper.net/documentation/us/en/software/junos/stp-l2/topics/topic-map/spanning-tree-configuring-mstp.html

• Question 36:

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

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  Explanation/Reference:

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

• Question 37:

  Your organization has recently acquired another company. You must carry all of the company's existing VLANsacross the corporate backbone to the existing branch locations without changing addressing and with minimal configuration. Which technology will accomplish this task?

  A. Q-in-Q all-in-one bundling
  B. PVLAN isolated VLAN
  C. MVRP registration normal
  D. EVPN-VXLAN anycast gateway
  A. Q-in-Q all-in-one bundling

• Question 38:

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

  

  A. The maximumwattage that this switch can allocate to attached Ethernet devices is 100 watts.
  B. If the total power consumption exceeds 90 watts, the ge-0/0/11 interface will continue to receive power.
  C. PoE is not enabled on the ge-0/0/0 interface.
  D. The ge-0/0/10 interface supports PoE+.
  A. The maximumwattage that this switch can allocate to attached Ethernet devices is 100 watts.
  D. The ge-0/0/10 interface supports PoE+.

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  Explanation/Reference:

  POE is enabled in the interface ge-0/0/0 but nothing is connected to it. switch is in AT mode (poe+) and interface ge-0/0/11 supports poe+ judging by maximun wattage

• Question 39:

  You aredeploying IP phones in your enterprise networks. When plugged in, the IP phones must automatically negotiate the power requirements for the new connection with the EX Series switches. In this scenario, which protocol should be used to enable this behavior?

  A. CDP
  B. MP-BGP
  C. LLDP-MED
  D. LLDP
  C. LLDP-MED

• Question 40:

  In OSPF, how does a router ensure that LSAs advertised to a neighboring router are received?

  A. LSA flooding guarantees that all routers will receive them successfully.
  B. LSAs are sent over a TCP connection.
  C. LSAs are acknowledged by the neighboring router.
  D. LSAs are advertised with an acknowledgement bit.
  C. LSAs are acknowledged by the neighboring router.