Juniper JN0-648 Online Practice Questions and Exam Preparation

Juniper JN0-648 Online Questions & Answers

• Question 11:

  What information is contained in an OSPF LSA header? (Choose two.)

  A. options
  B. subnet mask
  C. length
  D. protocol
  A. options
  C. length

• Question 12:

  Click the Exhibit button.

  

  You are authenticating user devices connected to your EX Series switch. You have 802.1X and MAC RADIUS configured for all ports. A user is complaining about the time it takes to connect their non-802.1X device on ge-0/0/15 using MAC RADIUS authentication.

  Referring to the exhibit, what should be done to accelerate the authentication process?

  A. Configure the restrict feature for MAC RADIUS on ge-0/0/15.
  B. Configure the no-reauthentication feature for 802.1X on ge-0/0/15.
  C. Change the 802.1X retry attempts value to 5 on ge-0/0/15.
  D. Change the supplicant mode to multiple on ge-0/0/15.
  D. Change the supplicant mode to multiple on ge-0/0/15.

• Question 13:

  Click the Exhibit button.

  

  Referring to the exhibit, which statement is correct?

  A. This router is connected to 27 different areas.
  B. This router is an ASBR.
  C. This router is an ABR.
  D. This router originated the LSA.
  D. This router originated the LSA.

• Question 14:

  You want to route Layer 3 PVLAN traffic within the secondary VLAN. What is required to accomplish this task?

  A. an FBF policy
  B. an IRB
  C. a community VLAN
  D. an isolated VLAN
  B. an IRB

• Question 15:

  Which protocol is a multicast routing protocol?

  A. OSPF
  B. BGP
  C. PIM
  D. IS-IS
  C. PIM

• Question 16:

  You are deploying PIM source-specific multicast (SSM) for a new multicast messaging service. You have configured the multicast source to use 235.44.123.100 as the multicast address. You are not able to join the PIM SSM multicast feed. Which two solutions would resolve this problem? (Choose two.)

  A. Reconfigure the multicast source to use an address in the range of 224.0.0.0 through 224.255.255.255.
  B. Reconfigure the multicast source to use an address in the range of 232.0.0.0 through 232.255.255.255.
  C. Add the multicast address to the [edit routing-options multicast ssm-map] stanza.
  D. Add the multicast address to the [edit routing-options multicast ssm-groups] stanza.
  B. Reconfigure the multicast source to use an address in the range of 232.0.0.0 through 232.255.255.255.
  D. Add the multicast address to the [edit routing-options multicast ssm-groups] stanza.

• Question 17:

  Your network is configured for EVPN load balancing on three different access switches. During an outage, you notice that not all interfaces are receiving traffic as expected. Which two requirements would you validate to identify this problem? (Choose two.)

  A. Validate that the same esi value is configured on multiple interfaces on all switches.
  B. Validate that the all-active flag is configured for multiple interfaces on each switch.
  C. Validate that all-active is configured for only one interface per switch.
  D. Validate that the same esi value is only configured on one interface per switch.
  A. Validate that the same esi value is configured on multiple interfaces on all switches.
  C. Validate that all-active is configured for only one interface per switch.

• Question 18:

  Click the Exhibit button.

  

  You have configured MSTP in your Layer 2 network. You are having problems with it establishing correctly. Referring to the exhibit, what is causing the problem?

  A. The region name is not correct.
  B. You must assign a context ID number other than zero.
  C. The MSTI-to-VLAN mapping does not match.
  D. The revision number is the same on both devices.
  C. The MSTI-to-VLAN mapping does not match.

• Question 19:

  Click the Exhibit button.

  

  You have applied the CoS configuration shown in the exhibit to an EX4300 switch. Which two statements are true? (Choose two.)

  A. All strict-high priority queues are serviced in a round-robin fashion as long as they have remaining credits.
  B. Packets in low priority queues transmit only when strict-high priority queues are empty.
  C. All strict-high priority queues are serviced in a round-robin fashion regardless of available credits.
  D. Packets in low priority queues are serviced when strict-high priority queues have no available credits.
  A. All strict-high priority queues are serviced in a round-robin fashion as long as they have remaining credits.
  B. Packets in low priority queues transmit only when strict-high priority queues are empty.

• Question 20:

  Click the Exhibit button.

  

  Referring to the exhibit, which statement is true?

  A. Only 802.1X authentication will be used for devices connecting to ge-0/0/15.
  B. Additional users will automatically be allowed to connect to ge-0/0/15.
  C. The current device is authenticated using MAC RADIUS.
  D. The current device was allowed after authentication attempts to the RADIUS server failed.
  D. The current device was allowed after authentication attempts to the RADIUS server failed.