JUNIPER JNCIA PREPERATION EXAM
QUESTIONS AND ANSWERS (VERIFIED
AND UPDATED)
Which operational command allows you to quickly verify the state of all physical and logical
interfaces - ANS show interface terse
What are two examples of transit traffic? - ANS SFTP traffic that enters and exits the same
interface on the local router
SCP traffic that enters one interface and exits another interface on the local router.
What is the minimum system-defined user class required to issue clear commands? -
ANS operator
Factory Default Device - ANS Connect to the device with the console connection.
Log in using user root and no password.
Which operational command displays the temperature of the routing engine CPU - ANS show
chassis routing-engine
TCP - ANS connection-oriented, 'intelligent' protocol that sets up and tears down its own
sessions, ensures all traffic is sent correctly, and retransmits missing data as required.
@2026/2027 ALLRIGHTS RESERVED.
,purpose of the load merge command - ANS to combine the current configuration with the
configuration you load
the logical unit that will administratively shut down - ANS interface disable
the interface configuration is ignored during commit - ANS interface deactivate
operational command used to view status messages sent to a file named test as they are sent -
ANS monitor start test
parameter of the monitor traffic command used with caution when considering storage space
on a Junos device - ANS write-file
which parameter would you use to prohibit the redistribution of a static route used for
management traffic - ANS no-readvertise
mod 13, static and dynamic routing
What next hop interface will be used to reach an IP destination - ANS view routing table, see
where the IP falls based on range, look at the Netif column
interface types: what are they and name 2 - ANS 1. management
2. internal
3. network
4. services
-mt: multicast tunnel
-ip: IP addressing
-mo: passive monitoring
-es: encryption
@2026/2027 ALLRIGHTS RESERVED.
,5. loopback (Lo0)
command displays routing table - ANS Show route
you are configuring a firewall filter. which from configuration would match only those packets
destined for 10.10.10.1 - ANS set term from destination-address 10.10.10.1
accept all BGP routes and import into inet.0, advertise all active BGP routes - ANS Default
routing policy for BGP
Routing policies - ANS can only export active routes
control the flow of routing information going to and from the routing table
Default Password requirements on devices running the Junos OS - ANS Alphanumeric
Character Classes must be used
Passwords must be at least six char
With regard to the Junos software architecture, which two of the following are found on all
Junos devices? - ANS multiple software daemons
serparation of control and forwarding
What are two Junos processes - ANS routing protocols process
packet forwarding engine process
The Junos software kernel is based on which operating system - ANS FreeBSD
@2026/2027 ALLRIGHTS RESERVED.
, Which two statements are correct regarding the internal link between the control plane and
forwarding plane? - ANS The internal link rate limits exception traffic to protect the Routing
Engine against denial-of-service attacks
The internal link has a built-in rate limiter that is not configurable
What are three examples of exception traffic - ANS SNMP traffic destined to the Junos device
Packets with special IP options fields
OSPF protocol updates
Which part of the Junos architecture handles ICMP time-to-live (TTL) expired messages? -
ANS forwarding plane
What are two functions of the Packet Forwarding Engine - ANS to implement policing,
firewall filtering, and class of service (CoS)
to forward packets based on the forwarding table
When a non-root user connects to a Junos device and successfully enters a username and
password, they are immediately placed at which level? - ANS operational mode
In which Junos mode are users allowed to monitor and troubleshoot software, network
conenctvity, and hardware - ANS operational
In which mode can you configure a device running Junos? - ANS configuration
Which Junos mode should you use to view the status of interfaces on a router -
ANS operational
@2026/2027 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS (VERIFIED
AND UPDATED)
Which operational command allows you to quickly verify the state of all physical and logical
interfaces - ANS show interface terse
What are two examples of transit traffic? - ANS SFTP traffic that enters and exits the same
interface on the local router
SCP traffic that enters one interface and exits another interface on the local router.
What is the minimum system-defined user class required to issue clear commands? -
ANS operator
Factory Default Device - ANS Connect to the device with the console connection.
Log in using user root and no password.
Which operational command displays the temperature of the routing engine CPU - ANS show
chassis routing-engine
TCP - ANS connection-oriented, 'intelligent' protocol that sets up and tears down its own
sessions, ensures all traffic is sent correctly, and retransmits missing data as required.
@2026/2027 ALLRIGHTS RESERVED.
,purpose of the load merge command - ANS to combine the current configuration with the
configuration you load
the logical unit that will administratively shut down - ANS interface disable
the interface configuration is ignored during commit - ANS interface deactivate
operational command used to view status messages sent to a file named test as they are sent -
ANS monitor start test
parameter of the monitor traffic command used with caution when considering storage space
on a Junos device - ANS write-file
which parameter would you use to prohibit the redistribution of a static route used for
management traffic - ANS no-readvertise
mod 13, static and dynamic routing
What next hop interface will be used to reach an IP destination - ANS view routing table, see
where the IP falls based on range, look at the Netif column
interface types: what are they and name 2 - ANS 1. management
2. internal
3. network
4. services
-mt: multicast tunnel
-ip: IP addressing
-mo: passive monitoring
-es: encryption
@2026/2027 ALLRIGHTS RESERVED.
,5. loopback (Lo0)
command displays routing table - ANS Show route
you are configuring a firewall filter. which from configuration would match only those packets
destined for 10.10.10.1 - ANS set term from destination-address 10.10.10.1
accept all BGP routes and import into inet.0, advertise all active BGP routes - ANS Default
routing policy for BGP
Routing policies - ANS can only export active routes
control the flow of routing information going to and from the routing table
Default Password requirements on devices running the Junos OS - ANS Alphanumeric
Character Classes must be used
Passwords must be at least six char
With regard to the Junos software architecture, which two of the following are found on all
Junos devices? - ANS multiple software daemons
serparation of control and forwarding
What are two Junos processes - ANS routing protocols process
packet forwarding engine process
The Junos software kernel is based on which operating system - ANS FreeBSD
@2026/2027 ALLRIGHTS RESERVED.
, Which two statements are correct regarding the internal link between the control plane and
forwarding plane? - ANS The internal link rate limits exception traffic to protect the Routing
Engine against denial-of-service attacks
The internal link has a built-in rate limiter that is not configurable
What are three examples of exception traffic - ANS SNMP traffic destined to the Junos device
Packets with special IP options fields
OSPF protocol updates
Which part of the Junos architecture handles ICMP time-to-live (TTL) expired messages? -
ANS forwarding plane
What are two functions of the Packet Forwarding Engine - ANS to implement policing,
firewall filtering, and class of service (CoS)
to forward packets based on the forwarding table
When a non-root user connects to a Junos device and successfully enters a username and
password, they are immediately placed at which level? - ANS operational mode
In which Junos mode are users allowed to monitor and troubleshoot software, network
conenctvity, and hardware - ANS operational
In which mode can you configure a device running Junos? - ANS configuration
Which Junos mode should you use to view the status of interfaces on a router -
ANS operational
@2026/2027 ALLRIGHTS RESERVED.
