jn0-400 practice quesitons
Questions: 7
Which three are included in the factory-default configuration? (Choose three.)
A. RSTP
B. LLDP
C. SNMP
D. User authentication
E. Family ethernet-switching for all ports
Answer: A, B, E
Questions: 8
Which directory contains the rollback 4 configuration?
A. /config
B. /var/config
C. /var/db/rollback
D. /config/db/config
Answer: D
Questions: 9
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
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 forward the advertisements received from a
neighboring IP phone on one LAN segment to another segment.
D. 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.
Answer: A
Questions: 10
Which statement is correct about the single-secure mode of 802.1X?
A. 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, any other devices on the same interface will gain access.
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 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.
Answer: D Questions: 11
What are two features of JUNOS software? (Choose two.)
A. JUNOS facilitates separate control and forwarding planes.
B. All processes use shared memory to make efficient use of available resources.
C. The functionality of JUNOS is made possible through multiple processes that are dependant
on each other.
D. All processes run in their own protected memory space to prevent against complete system
failure when a single process fails.
Answer: A, D
Questions: 12
Which two statements are correct regarding the DHCP snooping feature on EX-series switches?
(Choose two.)
A. DHCP snooping forwards DHCPACK messages from DHCP servers on untrusted interfaces.
B. DHCP snooping drops DHCPOFFER messages from DHCP servers on untrusted interfaces.
C. DHCP snooping drops DHCPDISCOVER messages from DHCP clients on trusted interfaces.
D. DHCP snooping treats access ports as untrusted interfaces and trunk ports as trusted
interfaces by default.
Answer: B, D
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