Juniper JN0-400 Online Practice Questions and Exam Preparation

Juniper JN0-400 Online Questions & Answers

• Question 71:

  Which operational-mode command displays the status, physical properties, logical properties, usage statistics, and error statistics for ge-0/0/0?

  A. show interfaces ge-0/0/0 brief
  B. show interfaces ge-0/0/0 detail
  C. show interfaces ge-0/0/0 extensive
  D. show interfaces ge-0/0/0 terse
  C. show interfaces ge-0/0/0 extensive

• Question 72:

  Which two options describe MSTP? (Choose two.)

  A. MSTP allows multiple root bridges per MSTI.
  B. MSTP supports up to 64 MSTIs per region.
  C. MSTP uses the CST to be backwards compatible with STP and RSTP.
  D. MSTP provides quicker convergence than STP and RSTP.
  B. MSTP supports up to 64 MSTIs per region.
  C. MSTP uses the CST to be backwards compatible with STP and RSTP.

• Question 73:

  Which switching feature allows individual users to be grouped in a LAN segment based upon business needs?

  A. 802.1X
  B. VLANs
  C. redundant trunk groups (RTGs)
  D. VRRP
  B. VLANs

• Question 74:

  Which statement describes a benefit of Link Layer Discovery Protocol-Media Endpoint Discovery (LLDP-MED)?

  A. Allows an LLDP-MED-enabled switch to disable the interface when an invalid LLDP-MED advertisement is received from a neighboring IP phone.
  B. Allows an LLDP-MED-enabled switch to forward the advertisements received from a neighboring IP phone on one LAN segment to another segment.
  C. Allows an LLDP-MED-enabled switch to request an LLDP-MED advertisement from a neighboring IP phone when a periodic update is not received in a specific interval.
  D. Allows an LLDP-MED-enabled switch to deliver VLAN and Class of Service (CoS) settings to a neighboring IP phone.
  D. Allows an LLDP-MED-enabled switch to deliver VLAN and Class of Service (CoS) settings to a neighboring IP phone.

• Question 75:

  Which statement is true regarding J-Web access?

  A. Only HTTP can be used to access J-Web.
  B. J-Web access uses the same authentication method as the CLI.
  C. The web-management service is enabled in the factory-default configuration.
  D. J-Web access is available only through the me0 interface.
  B. J-Web access uses the same authentication method as the CLI.

• Question 76:

  Which configuration example represents a Layer 2 interface configuration?

  A. ge-0/0/0 { unit 0 { family eth-switch; }
  B. ge-0/0/0 { unit 0 { family switching; }
  C. ge-0/0/0 { unit 0 { family l2-switching; }
  D. ge-0/0/0 { unit 0 { family ethernet-switching; }
  D. ge-0/0/0 { unit 0 { family ethernet-switching; }

• Question 77:

  Which statement regarding packet flow through an EX-series switch is correct?

  A. The destination MAC address determines which lookup table is used.
  B. The Routing Engine is consulted when processing both transit and host packets.
  C. Transit packets are processed by the Routing Engine.
  D. Routing protocol control packets are processed only by the Packet Forwarding Engine.
  A. The destination MAC address determines which lookup table is used.

• Question 78:

  Which two statements are true regarding the Virtual Router Redundancy Protocol (VRRP)? (Choose two.)

  A. The routers participating in VRRP all use the same virtual MAC address for a particular virtual IP address.
  B. The routers participating in VRRP must share a common group ID to provide redundancy for the virtual IP addresses defined under that group.
  C. The routers participating in VRRP elect a master router by choosing the router with the lowest priority.
  D. The routers participating in VRRP always elect a common master on a network segment, rather than one master for each VRRP group configured on a network segment.
  A. The routers participating in VRRP all use the same virtual MAC address for a particular virtual IP address.
  B. The routers participating in VRRP must share a common group ID to provide redundancy for the virtual IP addresses defined under that group.

• Question 79:

  Which operational-mode command allows a user to monitor the ge-0/0/0 interface statistics in real time?

  A. monitor traffic interface ge-0/0/0
  B. monitor interface ge-0/0/0
  C. monitor start ge-0/0/0
  D. monitor ge-0/0/0 real-time
  B. monitor interface ge-0/0/0

• Question 80:

  Which statement describes a benefit of Link Layer Discovery Protocol-Media Endpoint Discovery (LLDP-MED)?

  A. Allows an LLDP-MED-enabled switch to deliver VLAN and Class of Service (CoS) settings to a neighboring IP phone.
  B. Allows an LLDP-MED-enabled switch to disable the interface when an invalid LLDP-MED advertisement is received from a neighboring IP phone.
  C. Allows an LLDP-MED-enabled switch to request an LLDP-MED advertisement from a neighboring IP phone when a periodic update is not received in a specific interval.
  D. Allows an LLDP-MED-enabled switch to forward the advertisements received from a neighboring IP phone on one LAN segment to another segment.
  A. Allows an LLDP-MED-enabled switch to deliver VLAN and Class of Service (CoS) settings to a neighboring IP phone.