Juniper JN0-643 Online Practice Questions and Exam Preparation

Juniper JN0-643 Online Questions & Answers

• Question 21:

  You are designing a new enterprise network using EX switches. You are asked to u management. In this scenario which two statements are correct? (Choose two)

  A. MVRP can only be enable on trunk ports
  B. Locally defined VLANS must be manually assigned to trunk ports
  C. PDU update timers are evaluated on a per interface basis
  D. MVRP supports all spanning tree versions
  A. MVRP can only be enable on trunk ports
  C. PDU update timers are evaluated on a per interface basis

• Question 22:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  Which statement about the non-ABR router in Area 2 in the exhibit is true?

  A. The router has connectivity to all areas.
  B. The router has connectivity to Area 2 only.
  C. The router has connectivity to Area 2 and Area 0.
  D. The router has connectivity to Area 2 and Area 8.
  D. The router has connectivity to Area 2 and Area 8.

• Question 23:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  Referring to the exhibit, you are asked to prevent the 184.16.1.0/24 route from entering the backbone.

  Which configuration statements would accomplish the task?

  A. On router R1, issue the set protocols ospf area 3 nssa area-range 184.16.1.0/24 restrict command.
  B. On router R3, issue the set protocols ospf area 0 area-range 184.16.1.0/24 restrict command.
  C. On router R3, issue the set protocols ospf area 3 area-range 184.16.1.0/24 restrict command.
  D. On router R3, issue the set protocols ospf area 3 nssa area-range 184.16.1.0/24 restrict command.
  D. On router R3, issue the set protocols ospf area 3 nssa area-range 184.16.1.0/24 restrict command.

• Question 24:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  Referring to the exhibit, routers A, B, and C are in the same BGP AS 100. Router A prefers to route traffic through Router C.

  Which BGP attribute would you configure to ensure this behavior?

  A. as-path-prepend
  B. local-preference
  C. metric
  D. weight
  B. local-preference

• Question 25:

  -- Exhibit -

  user@SwitchA> show dot1x interface detail ge-0/0/2.0 ge-0/0/2.0 RolE. Authenticator

  Administrative statE. Auto

  Supplicant modE. Multiple

  Number of retries: 3

  Quiet perioD. 60 seconds

  Transmit perioD. 30 seconds

  Mac Radius: Enabled

  Mac Radius Restrict: Enabled

  Reauthentication: Enabled

  Configured Reauthentication interval: 3600 seconds

  Supplicant timeout: 30 seconds

  Server timeout: 30 seconds

  Maximum EAPOL requests: 2

  Guest VLAN member:

  Number of connected supplicants: 2

  user@SwitchA>

  -- Exhibit -

  Click the Exhibit button.

  Host 1, Host 2, and Host 3 are connected to Switch A on interface ge-0/0/2. Host 1 and Host 2 do not support 802.1X. They can authenticate and connect to the Internet. Host 3 was added and it supports 802.1X; however, it is unable to

  authenticate.

  Referring to the exhibit, how do you allow Host 3 to authenticate to the network but maintain secure access?

  A. Enable fallback authentication for 802.1X.
  B. Disable MAC RADIUS Restrict option on ge-0/0/2.
  C. Disable MAC RADIUS option on ge-0/0/2.
  D. Enable Administrative mode for 802.1X.
  B. Disable MAC RADIUS Restrict option on ge-0/0/2.

• Question 26:

  -- Exhibit

  

  -- Exhibit -

  Click the Exhibit button.

  You are asked to allow a customer to tunnel STP BPDUs from Customer Switch1 to Customer Switch2 for VLAN 300 on S-VLAN v500. You have administrative access to SW1 and SW3, but not SW2.

  Referring to the exhibit, which three configuration statements must be added to SW1 to allow ingress STP BPDUs on port ge-0/0/16 to pass to SW3 for VLAN 300 only? (Choose three.)

  A. set vlans v500 vlan-id 500 interface ge-0/0/16.0 mapping 300 swap
  B. set vlans v500 vlan-id 500 dot1q-tunneling layer2-protocol-tunneling stp
  C. set vlans v500 vlan-id 500 interface ge-0/0/16.0 mapping 300 push
  D. set ethernet-switching-options dot1q-tunneling ether-type 0x8100
  E. set vlans v500 vlan-id 500 interface ge-0/0/20.0 mapping 300 push
  B. set vlans v500 vlan-id 500 dot1q-tunneling layer2-protocol-tunneling stp
  C. set vlans v500 vlan-id 500 interface ge-0/0/16.0 mapping 300 push
  D. set ethernet-switching-options dot1q-tunneling ether-type 0x8100

• Question 27:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  Referring to the exhibit, R4 in AS 100 is sending routes 20.0.0.0/8 and 10.0.0.0/8. R3 sees the routes but R5 does not.

  What must be configured on the R3 router for the R5 router to install the routes?

  A. a next-hop self policy
  B. as-override toward the R5 router
  C. as-loops 2
  D. local-as 100
  B. as-override toward the R5 router

• Question 28:

  You are asked to implement a captive portal on your EX Series switches.

  What are three required steps? (Choose three.)

  A. You must create the captive portal login page.
  B. You must ensure the Web service is turned on.
  C. You must specify the interfaces participating in the captive portal.
  D. You must create and apply an authentication profile.
  E. You must create an authentication whitelist.
  B. You must ensure the Web service is turned on.
  C. You must specify the interfaces participating in the captive portal.
  D. You must create and apply an authentication profile.

• Question 29:

  Which protocol reachability is advertised by OSPFv2?

  A. IPv4
  B. IPv5
  C. IPv6
  D. ISO
  A. IPv4

• Question 30:

  -- Exhibit -- Exhibit -

  

  Click the Exhibit button.

  Referring to the exhibit, a customer noticed that the 802.1Q-tunneled packets received on SwitchB are being dropped.

  What is causing this problem?

  A. There is an ether-type mismatch on SwitchA and SwitchB.
  B. Customer VLANs are not configured on SwitchB.
  C. The SwitchB interface connecting to SwitchA is not a trunk port.
  D. Customer VLANs are mismatched on both switches.
  A. There is an ether-type mismatch on SwitchA and SwitchB.