Juniper JN0-643 Online Practice Questions and Exam Preparation

Juniper JN0-643 Online Questions & Answers

• Question 121:

  -- Exhibit -user@switch> show configuration access radius_server {

  10.1.1.252 {

  port 1812;

  secret "$9$7gdwgGDkTz6oJz69A1INdb"; ## SECRET-DATA

  }

  profile radius_server {

  authentication-order password;

  radius {

  authentication-server 10.1.1.252;

  }

  }

  user@switch> show configuration protocols dot1x authenticator { ge-0/0/17.0 { supplicant multiple; } } }

  user@switch> show configuration vlans Sales_VLAN {

  vlan-id 123;

  }

  user@switch> show configuration interfaces ge-0/0/17 unit 0 { family ethernet-switching {

  port-mode access;

  }

  }

  -- Exhibit -

  Click the Exhibit button.

  You are asked to place employees that are in the sales group into their own VLAN called Sales_VLAN with a VLAN ID of 123 on port ge-0/0/17. The VLAN must be assigned dynamically. After trying an initial configuration, you see that users

  in the sales group are not assigned to the Sales_VLAN.

  Referring to the exhibit, which two configuration statements are needed on the EX Series switch to resolve this problem? (Choose two.)

  A. set access profile radius_server authentication-order radius
  B. set vlans Sales_VLAN interface ge-0/0/17.0
  C. set interfaces ge-0/0/17.0 family ethernet-switching vlan members Sales_VLAN
  D. set protocols dot1x authenticator authentication-profile-name radius_server
  A. set access profile radius_server authentication-order radius
  D. set protocols dot1x authenticator authentication-profile-name radius_server

• Question 122:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  In the topology shown in the exhibit, which two BGP attributes can AS1 manipulate to influence the path that AS4 takes to reach prefixes originated by AS1? (Choose two.)

  A. Local Preference
  B. AS Path
  C. Origin
  D. MED
  B. AS Path
  C. Origin

• Question 123:

  You are implementing MSTP in your network.

  Which three values must match on all switches within the MST region? (Choose three)

  A. Context identifier
  B. Region name
  C. VLANs
  D. Revision
  E. Configuration manifest
  B. Region name
  C. VLANs
  D. Revision

• Question 124:

  -- Exhibit

  

  -- Exhibit -Click the Exhibit button.

  Referring to the exhibit, which type of LSA will be seen on router A for routes originating in Customer A's network?

  A. Type 7 LSA
  B. Type 2 LSA
  C. Type 5 LSA
  D. Type 1 LSA
  C. Type 5 LSA

• Question 125:

  R1 has an OSPF adjacency with R2 over a point-to-point link.

  Which three statements about the advertisements for this link in the Type 1 (Router) LSA generated by R1 are true? (Choose three.)

  A. It has a value in the link ID field with R2's interface IP address.
  B. It has a value in the link ID field with R2's router ID.
  C. It has a link-type of point-to-point (Type 1).
  D. It has a link-type of Transit (Type 2).
  E. It has a link-type of stub (Type 3).
  B. It has a value in the link ID field with R2's router ID.
  D. It has a link-type of Transit (Type 2).
  E. It has a link-type of stub (Type 3).

• Question 126:

  You are asked to reduce broadcast traffic within the switching domain. You want VLAN broadcast traffic to only go to switches that have VLAN members connected to the network. How would you accomplish this task?

  A. storm control on all of the switches in the network
  B. configure multiple VLAN registration protocol [MVRP] on all trunk ports in the network
  C. use the set vlansvlan prune command for all configured VLANs
  D. use the set protocols igmp-snooping vlan all immediate-leave command
  B. configure multiple VLAN registration protocol [MVRP] on all trunk ports in the network

• Question 127:

  -- Exhibit -{master:0}[edit]

  user@switch# show vlans

  v200 {

  vlan-id 200;

  interface {

  ge-0/0/7.0;

  ge-0/0/8.0;

  }

  dot1q-tunneling {

  customer-vlans [ 11 12 ];

  layer2-protocol-tunneling {

  all {

  drop-threshold 800;

  shutdown-threshold 700;

  }

  }

  }

  }

  -- Exhibit -

  Click the Exhibit button.

  Referring to the exhibit, you are attempting to configure L2PT for VLAN v200 but the configuration will not commit.

  Which three configuration statements would resolve the problem? (Choose three.)

  A. set vlans v200 dot1q-tunneling layer2-protocol-tunneling all drop-threshold 600
  B. set vlans v200 dot1q-tunneling layer2-protocol-tunneling all shutdown-threshold 600
  C. set vlans v200 dot1q-tunneling layer2-protocol-tunneling all shutdown-threshold 900
  D. set vlans v200 dot1q-tunneling layer2-protocol-tunneling all drop-threshold 700
  E. set vlans v200 dot1q-tunneling layer2-protocol-tunneling all drop-threshold 900
  A. set vlans v200 dot1q-tunneling layer2-protocol-tunneling all drop-threshold 600
  C. set vlans v200 dot1q-tunneling layer2-protocol-tunneling all shutdown-threshold 900
  D. set vlans v200 dot1q-tunneling layer2-protocol-tunneling all drop-threshold 700

• Question 128:

  -- Exhibit

  

  -- Exhibit -

  Click the Exhibit button.

  Based on the SPF calculation in the exhibit, what is the shortest path to reach R3 from R1?

  A. R2-R3
  B. R2-R5-R4
  C. R3
  D. R2-R4
  C. R3

• Question 129:

  You manage your company's enterprise network using EX series switches. Your company wants to use Q in Q tunneling to correct remote customer sites together, which statement is correct about the scenario?

  A. you must enable L2PT to tunnel layer 2 protocol traffic
  B. the outside layer 2 frame is popped by the penultimate switch C. customer traffic is tunneled through the network using the C-VLAN-ID
  D. the default Ethernet type value is 0x9100
  A. you must enable L2PT to tunnel layer 2 protocol traffic

• Question 130:

  Which two statements are correct about using LLDP on junos devices? (Choose two)

  A. LLDP operates on layer 2 and layer 3 interfaces
  B. LLDP can interoperate with the cisco discovery protocol CDP
  C. LLDP is enabled on all devices by default
  D. LLDP operates on layer 2 interfaces
  A. LLDP operates on layer 2 and layer 3 interfaces
  C. LLDP is enabled on all devices by default