Juniper JN0-400 Online Practice Questions and Exam Preparation

Juniper JN0-400 Online Questions & Answers

• Question 11:

  What are two features of JUNOS software? (Choose two.)

  A. The functionality of JUNOS is made possible through multiple processes that aredependant on each other.
  B. All processes run in their own protected memory space to prevent against complete system failure when a single process fails.
  C. All processes use shared memory to make efficient use of available resources.
  D. JUNOS facilitates separate control and forwarding planes.
  B. All processes run in their own protected memory space to prevent against complete system failure when a single process fails.
  D. JUNOS facilitates separate control and forwarding planes.

• Question 12:

  What are three executable commands for the prompt shown below? (Choose three.)

  [edit] root#

  A. show system reboot
  B. edit system login
  C. monitor interface ge-0/0/0
  D. delete system syslog
  E. run show version
  B. edit system login
  D. delete system syslog
  E. run show version

• Question 13:

  Which three functions are performed in the control plane? (Choose three.)

  A. system management
  B. protocol updates
  C. forwarding table maintenance
  D. packet forwarding
  E. service implementation
  A. system management
  B. protocol updates
  C. forwarding table maintenance

• Question 14:

  Which two external authentication methods are supported by the JUNOS software for accessing the CLI? (Choose two.)

  A. TACACS+
  B. LDAP
  C. NTLM
  D. RADIUS
  A. TACACS+
  D. RADIUS

• Question 15:

  Which Multiple Spanning Tree Protocol (MSTP) component is used to interconnect several Multiple Spanning Tree (MST) regions?

  A. master root bridge
  B. Common Spanning Tree
  C. regional instance
  D. Multiple Spanning Tree Instance
  B. Common Spanning Tree

• Question 16:

  What are two reasons for using VLANs? (Choose two.)

  A. Using VLANs groups users based on business needs.
  B. Using VLANs allows switching between remote physical locations.
  C. Using VLANs enables the use of redundant trunk groups.
  D. Using VLANs, LAN membership can be dynamically changed using software configuration.
  A. Using VLANs groups users based on business needs.
  D. Using VLANs, LAN membership can be dynamically changed using software configuration.

• Question 17:

  How are loops avoided in a virtual chassis?

  A. split horizon
  B. physical cabling requirements
  C. half duplex communication
  D. egress filter tables
  D. egress filter tables

• Question 18:

  Which command is used to upgrade JUNOS software on an EX-series switch?

  A. user@switch> request system software upgrade
  B. user@switch# request system software add
  C. user@switch# request system software upgrade
  D. user@switch> request system software add
  D. user@switch> request system software add

• Question 19:

  Which two statements regarding packet flow through an EX-series switch are correct? (Choose two.)

  A. If the egress port belongs to the ingress Packet Forwarding Engine, the packet is switched locally.
  B. The destination MAC address determines which lookup table is used.
  C. If the egress port belongs to a remote Packet Forwarding Engine, the Routing Engine is consulted prior to forwarding the packet.
  D. Transit packets are processed by the Routing Engine.
  A. If the egress port belongs to the ingress Packet Forwarding Engine, the packet is switched locally.
  B. The destination MAC address determines which lookup table is used.

• Question 20:

  Which two statements describe the candidate configuration? (Choose two.)

  A. It is the current operational configuration on the switch.
  B. It is a temporary configuration that might possibly become the active configuration.
  C. It becomes the active configuration upon commit.
  D. It is stored as /config/juniper.conf.gz.
  B. It is a temporary configuration that might possibly become the active configuration.
  C. It becomes the active configuration upon commit.