Juniper JN0-643 Online Practice Questions and Exam Preparation

Juniper JN0-643 Online Questions & Answers

• Question 271:

  When using port authentication on a juniper switch, which two statements are true? (Choose two)

  A. the switch can be configured to allow 802.1x authenticating and MAC based radius authenticated on the same port at the same time
  B. the switch can allow 802.1x authentication and MAC based authentication, but cannot do both on the samepoint
  C. End clients must have an 802.1x supplicant installed to authenticate to the network
  D. Clients can be authenticated bv using their MAC address and a central radius database
  B. the switch can allow 802.1x authentication and MAC based authentication, but cannot do both on the samepoint
  D. Clients can be authenticated bv using their MAC address and a central radius database

• Question 272:

  -- Exhibit -[edit class-of-service]

  drop-profiles {

  test-drop {

  fill-level 20 drop-probability 35;

  fill-level 55 drop-probability 60;

  fill-level 70 drop-probability 80;

  fill-level 95 drop-probability 100;

  }

  }

  -- Exhibit -

  Click the Exhibit button.

  According to the configuration shown in the exhibit, what percentage of the traffic will be dropped when the queue fill level reaches 65 percent?

  A. 25
  B. 50
  C. 58
  D. 60
  D. 60

• Question 273:

  -- Exhibit -user@router> show ospf route Topology default Route Table: Prefix Path Route NH Metric NextHop Nexthop Type Type Type Interface Address/LSP 192.168.1.0/24 Intra Network IP 10 ge-0/0/1.0 -- Exhibit -

  Click the Exhibit button.

  Which two configurations result in the output shown in the exhibit? (Choose two.)

  A. [edit protocols ospf] user@router# show reference-bandwidth 10g; area 0.0.0.0 { interface ge-0/0/1.0; }
  B. [edit protocols ospf] user@router# show reference-bandwidth 1g; area 0.0.0.0 { interface ge-0/0/1.0; }
  C. [edit protocols ospf] user@router# show reference-bandwidth 1m; area 0.0.0.0 { interface ge-0/0/1.0 { metric 10; } }
  D. [edit protocols ospf] user@router# show reference-bandwidth 100m; area 0.0.0.0 { interface ge-0/0/1.0; }
  A. [edit protocols ospf] user@router# show reference-bandwidth 10g; area 0.0.0.0 { interface ge-0/0/1.0; }
  C. [edit protocols ospf] user@router# show reference-bandwidth 1m; area 0.0.0.0 { interface ge-0/0/1.0 { metric 10; } }

• Question 274:

  Referring to the exhibit, all host A has authenticated using 802.1X B. Which supplicant mode IS USED on the switch?

  

  A. MAC RADIUS
  B. Multiple
  C. Single
  D. Single-secure
  C. Single

• Question 275:

  -- Exhibit -user@router> show ospf database network extensive

  OSPF link state database, area 0.0.0.1

  Type ID Adv Rtr Seq Age Opt Cksum Len Network 10.222.1.1 192.168.20.1 0x80000002 813 0x2 0x 32 mask 255.255.255.0 attached router 192.168.20.1 attached router 192.168.40.1 Aging timer 00:46:27 Installed 00:13:32 ago, expires in 00:46:27, sent 1w5d 01:07:09 ago

  -- Exhibit -

  Click the Exhibit button.

  Referring to the exhibit, which statement is true regarding the OSPF network LSA?

  A. The ID field value shows the router ID of the advertising router.
  B. The ID field is the local interface IP address from which the LSA will be advertised.
  C. The options field indicates this is a Type 2 LSA.
  D. The output shows that 192.168.20.1 is the designated router.
  D. The output shows that 192.168.20.1 is the designated router.

• Question 276:

  When servicing queues on an EX series switch, which two statements are true? (Choose two)

  A. By default, the class-of-service bits on a packet do not change on egress, regardless of which queue services the packet.
  B. By default, the four primary queues of best effort, assured forwarding expedited forwarding and network control have resources assigned to them.
  C. By default, only the best effort and network-control queues have resources assigned to them.
  D. WHEN TRAFFIC is assigned to user defined queues the best effort queue resources are automatically divided evenly among all user's configured queues to ensure all traffic get serviced.
  A. By default, the class-of-service bits on a packet do not change on egress, regardless of which queue services the packet.
  C. By default, only the best effort and network-control queues have resources assigned to them.

• Question 277:

  An OSPF router is an ABR but not an ASBR.

  Which three types of LSAs would you expect this router to generate? (Choose three.)

  A. Type 1 LSA
  B. Type 3 LSA
  C. Type 4 LSA
  D. Type 5 LSA
  E. Type 6 LSA
  A. Type 1 LSA
  B. Type 3 LSA
  C. Type 4 LSA

• Question 278:

  You installed redundant power supplies of different capacities into your EX switch. In this scenario, which statement is true?

  A. The POE power budget is based on the number of ports on the switch.
  B. The POE power budget is based on the combined wattage of both power supplies.
  C. The POE power budget is based on the wattage of the lower capacity power supply.
  D. The POE power budget is based on the wattage of the higher capacity power supply.
  C. The POE power budget is based on the wattage of the lower capacity power supply.

• Question 279:

  -- Exhibit -

  user@router> show bgp summary Groups: 3 Peers: 3 Down peers: 0 Table Tot Paths Act Paths Suppressed History Damp State Pending inet.0 10 8 0 0 0 0 inet6.0 4 3 0 0 0 0 Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State| #Active/Received/Accepted/Damped...

  10.0.3.5 65550 41 52 0 2 17:45 5/5/5/0 0/0/0/0

  172.16.0.6 65010 52 42 0 2 31 Establ inet.0: 3/5/5/0 inet6.0: 3/4/4/0 2001:ffff::3:5 65550 43 44 0 4 17:53 Establ inet6.0: 0/0/0/0

  user@router>

  -- Exhibit -Click the Exhibit button.

  Examine the output of the show bgp summary command shown in the exhibit.

  From which BGP peer is the router receiving IPv6 routes?

  A. 10.0.3.5
  B. 172.16.0.6
  C. 2001:ffff::3:5
  D. 2001:ffff:3:5
  B. 172.16.0.6

• Question 280:

  -- Exhibit -user@switch> show spanning-tree bridge

  STP bridge parameters Context ID : 0 Enabled protocol : MSTP

  STP bridge parameters for CIST Root ID : 32768.00:19:e2:55:1a:01 Root cost : 0 Root port : ge-0/0/10.0 CIST regional root : 32768.00:19:e2:55:1a:01 CIST internal root cost : 20000 Hello time : 2 seconds Maximum age : 20 seconds Forward delay : 15 seconds Hop count : 19 Message age : 0 Number of topology changes : 2 Time since last topology change : seconds Topology change initiator : ge-0/0/10.0 Topology change last recvd. from : 00:19:e2:55:24:8c Local parameters Bridge ID : 32768.b0:c6:9a:73:27:90

  Extended system ID : 0 Internal instance ID : 0

  STP bridge parameters for MSTI 1 MSTI regional root : 4097.b0:c6:9a:73:27:90 Hello time : 2 seconds Maximum age : 20 seconds Forward delay : 15 seconds Number of topology changes : 2 Time since last topology change : seconds Topology change initiator : ge-0/0/1.0 Topology change last recvd. from : b0:c6:9a:73:39:81 Local parameters Bridge ID : 4097.b0:c6:9a:73:27:90 Extended system ID : 0 Internal instance ID : 1

  STP bridge parameters for MSTI 2 MSTI regional root : 4098.b0:c6:9a:73:39:90 Root cost : 20000 Root port : ge-0/0/1.0 Hello time : 2 seconds Maximum age : 20 seconds Forward delay : 15 seconds Hop count : 19 Number of topology changes : 2 Time since last topology change : seconds Topology change initiator : ge-0/0/1.0 Topology change last recvd. from : b0:c6:9a:73:39:81 Local parameters Bridge ID : 8194.b0:c6:9a:73:27:90 Extended system ID : 0 Internal instance ID : 2 -- Exhibit -

  Click the Exhibit button.

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

  A. The local switch is not the root bridge for MSTI 1.
  B. The local switch is the root bridge for MSTI 1.
  C. The local switch is the root bridge for MSTI 2.
  D. The local switch is not the root bridge for MSTI 2.
  B. The local switch is the root bridge for MSTI 1.
  D. The local switch is not the root bridge for MSTI 2.