Juniper JN0-643 Online Practice Questions and Exam Preparation

Juniper JN0-643 Online Questions & Answers

• Question 201:

  Which of following multicast group is used for all PIMrouters?

  A. 224.0.0.1
  B. 224.0.0.2
  C. 224.0.0.13
  D. 224.0.0.22
  C. 224.0.0.13

• Question 202:

  Which connection method do OSPF routers use to communicate with each other?

  A. IP protocol number 89
  B. TCP port 179
  C. UDP port 179
  D. IP protocol number 6
  C. UDP port 179

• Question 203:

  Referring to the exhibit, R2 is exporting the route for server1 as a Type 2 external route and R6 is exporting the route for server 1 as a type 1 external route in OSPF. Which path is taken to reach server-1 from user1?

  

  A. R1>R3>R6
  B. R1>R2
  C. R1>R4>R6
  D. R1>R2>R4>R6
  D. R1>R2>R4>R6

• Question 204:

  -- Exhibit -

  {master:0}[edit]

  user@switch# show ethernet-switching-options voip

  interface ge-0/0/16.0 {

  vlan phones;

  }

  {master:0}[edit]

  user@switch# show interfaces ge-0/0/16

  unit 0 {

  family ethernet-switching {

  port-mode access;

  vlan {

  members internet;

  }

  }

  }

  {master:0}[edit]

  user@switch# show vlans

  hr {

  vlan-id 513;

  }

  internet {

  vlan-id 15;

  }

  phones {

  vlan-id 25;

  }

  servers {

  vlan-id 30;

  }

  {master:0}[edit]

  user@switch# show interfaces ge-0/0/23

  description uplink;

  unit 0 {

  family ethernet-switching {

  port-mode trunk;

  vlan {

  members [ hr internet ];

  }

  }

  }

  -- Exhibit -

  Click the Exhibit button.

  You have recently implemented a Layer 2 network designed to support VoIP. Users have reported that they cannot use their IP phones to make calls.

  Based on the switch configuration shown in the exhibit, which command will resolve this issue?

  A. set interfaces ge-0/0/23 unit 0 family ethernet-switching vlan members phones
  B. set interfaces ge-0/0/16 unit 0 family ethernet-switching port-mode trunk
  C. set ethernet-switching-options voip interface ge-0/0/23 vlan phones
  D. set vlans phones vlan-id 513
  A. set interfaces ge-0/0/23 unit 0 family ethernet-switching vlan members phones

• Question 205:

  Which CoS feature avoids congestion in a device by limiting traffic on ingress interfaces?

  A. rewrite rule
  B. scheduler
  C. drop profile
  D. policer
  A. rewrite rule

• Question 206:

  During the BGP route-resolution process, the Junos OS must calculate the appropriate next-hop based on the BGP protocol next-hop attribute. Which two routing tables are checked during this process in a default Junos configuration? (Choose two.)

  A. inet.0
  B. inet.1
  C. inet.2
  D. inet.3
  A. inet.0
  D. inet.3

• Question 207:

  -- Exhibit -

  user@SwitchA# show protocols dot1x

  authenticator {

  authentication-profile-name dot1x;

  interface {

  ge-0/0/0.0 {

  supplicant single;

  }

  ge-0/0/1.0 {

  supplicant single-secure;

  }

  ge-0/0/2.0 {

  supplicant multiple;

  }

  } }

  {master:0}[edit] user@SwitchA# show access radius-server {

  172.27.14.226 {

  port 1812;

  secret "$9$vqs8xd24Zk.5bs.5QFAtM8X"; ## SECRET-DATA }

  }

  profile dot1x {

  authentication-order radius;

  radius {

  authentication-server 172.27.14.226;

  accounting-server 172.27.14.226;

  }

  accounting {

  order radius;

  immediate-update;

  }

  }

  {master:0}[edit] user@SwitchA# -- Exhibit -

  Click the Exhibit button.

  Referring to the exhibit, which three statements describe correct behavior of Switch A? (Choose three.)

  A. Switch A allows complete access to all users connected to port ge-0/0/2 that log in with their correct user credentials.
  B. Switch A allows complete access to all users connected to port ge-0/0/0 that log in with their correct user credentials.
  C. Switch A allows complete access to the second user that connects to port ge-0/0/1 with its correct credentials only after the first user logs out.
  D. Switch A allows complete access to all users connected to port ge-0/0/0 without authentication after the first user has logged in with its correct user credentials.
  E. Switch A allows complete access to all users connected to port ge-0/0/1 that securely log in using HTTPS with their correct user credentials.
  A. Switch A allows complete access to all users connected to port ge-0/0/2 that log in with their correct user credentials.
  C. Switch A allows complete access to the second user that connects to port ge-0/0/1 with its correct credentials only after the first user logs out.
  D. Switch A allows complete access to all users connected to port ge-0/0/0 without authentication after the first user has logged in with its correct user credentials.

• Question 208:

  How does an administrator block IGMP reports for the 239.0.0.0/8 group range?

  A. Create a routing policy and apply it to IGMP using the group-policy feature.
  B. Create a routing policy and apply it to IGMP using the report-policy feature.
  C. Create a routing policy and apply it to IGMP as export.
  D. Create a routing policy and apply it to IGMP as import.
  A. Create a routing policy and apply it to IGMP using the group-policy feature.

• Question 209:

  You notice that a number of IGMP leave group messages are passing through a BMA network and are impacting the network's performance. What would you do to resolve this issue without affecting multicast traffic?

  A. Apply an import policy to control leave group messages.
  B. Suppress group-specific queries.
  C. Suppress generic IGMP queries.
  D. Enable promiscuous-mode in IGMP.
  B. Suppress group-specific queries.

• Question 210:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button. You are asked to separate the human resources group from the finance group on the company network even though they share the same VLAN. You consider using PVLANs, and you delegate the task to a junior engineer who submits the

  configuration shown in the exhibit to accomplish this task. After review, you realize that the PVLAN implementation will not work correctly. Referring to the exhibit, which three commands must be included to resolve the problem? (Choose three.)

  A. set vlans pvlan no-local-switching
  B. set vlans hr-group no-local-switching
  C. set vlans finance-group no-local-switching
  D. set vlans hr-group primary-vlan pvlan
  E. set vlans finance-group primary-vlan pvlan
  A. set vlans pvlan no-local-switching
  D. set vlans hr-group primary-vlan pvlan
  E. set vlans finance-group primary-vlan pvlan