Juniper JN0-400 Online Practice Questions and Exam Preparation

Juniper JN0-400 Online Questions & Answers

• Question 51:

  What are three key features of virtual chassis? (Choose three.)

  A. ability to upgrade all members of a virtual chassis from the master switch
  B. dedicated master and backup routing engines
  C. dedicated active and standby switch fabrics
  D. ability to configure vcp-0 and vcp-1 interfaces to run at various speeds
  E. ability to interconnect members of a virtual chassis using the 10-Gigabit Ethernet uplink ports
  A. ability to upgrade all members of a virtual chassis from the master switch
  B. dedicated master and backup routing engines
  E. ability to interconnect members of a virtual chassis using the 10-Gigabit Ethernet uplink ports

• Question 52:

  What are two components of the JUNOS software architecture? (Choose two.)

  A. efficient processing of all packets through the control plane
  B. shared memory environment for all processes
  C. multiple software processes
  D. separation of control and forwarding planes
  C. multiple software processes
  D. separation of control and forwarding planes

• Question 53:

  Which two methods are valid for performing a tcpdump on an EX-series interface? (Choose two.)

  A. Use the monitor traffic interface command.
  B. Use the packet capture utility under the J-Web Troubleshoot tab.
  C. Use the monitor interface traffic command.
  D. Use the packet capture utility under the J-Web Monitor tab.
  A. Use the monitor traffic interface command.
  B. Use the packet capture utility under the J-Web Troubleshoot tab.

• Question 54:

  Which two methods are valid for performing a tcpdump on an EX-series interface? (Choose two.)

  A. Use the packet capture utility under the J-Web Monitor tab.
  B. Use the packet capture utility under the J-Web Troubleshoot tab.
  C. Use the monitor traffic interface command.
  D. Use the monitor interface traffic command.
  B. Use the packet capture utility under the J-Web Troubleshoot tab.
  C. Use the monitor traffic interface command.

• Question 55:

  What is the default hello-time value for RSTP?

  A. 2 seconds
  B. 30 seconds
  C. 6 seconds
  D. 10 seconds
  A. 2 seconds

• Question 56:

  You want to configure Layer 3 routing between two VLANs on a single EX-series switch. In which configuration hierarchy would you configure the IP addresses for each VLAN?

  A. [edit interfacesvlan]
  B. [editvlans]
  C. [edit familyinet]
  D. [edit routing-options]
  A. [edit interfacesvlan]

• Question 57:

  Which two statements are true regarding system configuration? (Choose two.)

  A. The minimum valid SNMP configuration includes only a community name and a trap group.
  B. The minimum valid SNMP configuration includes only a community name.
  C. A valid DHCP server configuration must include a BOOTP (DHCP relay) configuration.
  D. A valid DHCP server configuration must not include a BOOTP (DHCP relay) configuration.
  B. The minimum valid SNMP configuration includes only a community name.
  D. A valid DHCP server configuration must not include a BOOTP (DHCP relay) configuration.

• Question 58:

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

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

• Question 59:

  Which statement is correct regarding Dynamic ARP Inspection (DAI)?

  A. DAI drops any gratuitous-ARP when configured.
  B. DAI examines ARP packets on Layer 2 access interfaces by default.
  C. DAI is enabled by default.
  D. DAI examines ARP packets on Layer 2 trunk interfaces by default.
  B. DAI examines ARP packets on Layer 2 access interfaces by default.

• Question 60:

  Which statement is correct about the single-secure mode of 802.1X?

  A. It allows any one supplicant on the interface to be authenticated; once authentication is successful, any other devices on the same interface will gain access.
  B. It allows any one supplicant on the interface to be authenticated; once authentication is successful, only the successfully authenticated supplicant is allowed access at one time.
  C. It allows any number of supplicants on the interface to be authenticated; only supplicants with their own successful authentication are allowed access at the same time.
  D. It does not require any supplicant on the interface; no supplicant is able to gain access.
  B. It allows any one supplicant on the interface to be authenticated; once authentication is successful, only the successfully authenticated supplicant is allowed access at one time.