JNCIA-JUNOS PRE-Assessment Exam

JNCIA-JUNOS PRE-Assessment Exam

Q1: What are two functions of the routing-engine? (Choose two)

• To build OSPF and ISIS adjacencies.
• To build the layer 2 and layer 3 forwarding tables.
• To receive and process packets that could not be forwarded by the pfe.
• To verify that packets arriving at the router are allowed by any configured firewall filters.

Q2: In which mode are users allowed to monitor and troubleshoot the software, network connectivity, and hardware

• Privilege mode
• Operational mode
• Configuration mode
• Monitoring mode

Q3: in configuration mode you see the following prompt [edit interfaces fe-1/1/1] user@router#

Which command will take you to operational mode?

• End
• Exit
• Quit
• Exit configuration-mode

Q4: what are two functions of the packet forwarding engine? (Choose two)

• To build the layer 2 forwarding table
• To forward packets based on the forwarding table
• To send ICMP time exceeded messages when the ttl reaches 0
• To implement policing, firewall filtering, and QoS

Q5: Which character in the JUNOS software CLI allows you to filter and manipulate command output?

• < >
• ?
• |

Q6: When you first login into a router, how does the router indicate that factory defaults are being used?

• The router host-name is Anmesiac
• The password you used to login is JUNOS
• The router goes immediately into configuration mode after you login.
• The router allows you to get into configuration mode without you having to login.

Q7: Which statement is correct about protocol families on an interface?

• Only one family is allowed on an interface
• Only one address per family is allowed on an interface
• Only one address per family is allowed on a given unit
• Multiple address families and addressed can be configured under the same unit.

Q8: What is the third SONET interface on a PIC installed in PIC slot 1, FPC slot 1?

• Interface sonnet-1/3/1
• Interface so-1/1/2
• Interface so-3/1/1
• Interface so-0/1/1.2

Q9: Which three user authentication methods are supported by the JUNOS software? (Choose three)

• LDAP
• RADIUS
• TACACS
• LOCAL PASSWORD
• Web authentication

Q10: Which two JUNOS software authentication methods require the use of a server for authentication? (Choose two)

• CHAP
• RADIUS
• Kerberos
• TACACS

Q11: Which three configuration components are required to create a user account using locat authentication? (Choose three)

• Permissions
• Class
• User name
• User ID
• User authentication (password)

Q12: Which command allows you to quickly verify the state of all physical and logical interfaces?

User@host> show interface summary

User@host> show interfaces terse

User@host> show interfaces brief

User@host> show interfaces routing

Q13: A network administrator would like to verify the active alarms on interface so-0/0/0.0.

Which command displays this information?

• Show alarms
• Show interfaces terse
• Show alarms extensive
• Show interfaces extensive

Q14: what could you type to view all of the PICs within a router as well as their serial numbers?

• Show chassis interfaces
• Show chassis pics
• Show chassis inventory
• Show chassis hardware

Q15: Which routing table is used for all IPv4 unicast forwarding?

• inet.0
• Inet4.0
• Ipv4.0
• Forwarding.0

Q16: What is a characteristic of route preference?

• it is the same as a route metric
• it must be assigned manually for each protocol
• a higher preference is better than a lower preference
• A lower preference is better than a higher preference.

Q17: What is the correct CLI command to display the routing table?

• Show routing-table
• Show routes
• Display routes
• Show route

Q18: which two are considered match criteria in a policy? (Choose two)

• Next-term
• As path
• Prefix-file
• Community

Q19: Which policy action is considered a flow control action?

• Accept
• Next term
• Reject
• Preference

Q20: What is the proper order for CoS processing for egress packets on a juniper router?

• Multifield Classifier > scheduler/sharper/RED>Rewrite marker
• Policer > Multifield Classifier > Scheduler/shaper/RED > Rewrite Marker
• Scheduler/shaper/RED > Multifield Classifier > Policing > Rewrite Marker
• Rewrite marker > Policer > Multifield Classifier > Scheduler/shaper/RED

Q21: What is the purpose of queuing traffic in a CoS scenario ?

• it allows routed traffic to be handled before switched traffic.
• It allows the handling of traffic based on its TOS code
• It allows traffic to be classified into forwarding classes.
• It allows traffic to be forwarded based on its forwarding class.

Q22: Which command swquence shows most of the CoS configuration for an interface?

• show interface queue ge-0/0/0
• show queues interfaces ge-0/0/0
• show class-of-serviice interface ge-0/0/0
• show interface queue detail

Q23: what is the binary equivalent of 100.25.98.207

• 01100100 00011001 01100010 11001111
• 01110100 00011001 01101010 11001111
• 01100100 00011001 01101010 11001111
• 11100100 00001001 01100010 11001110

Q24: What is typically used to break up individual broadcast domains?

• Bridge
• Router
• Switch
• Hub

Q25: Which two statements are true regarding collisions on an Ethernet segment? (Choose two)

• When a collision occurs, the device with the lowest MAC address sends a jam signal to notify all other devices of the collision
• When a collision occurs, both devices stop transmitting, wait a random period of time, verify the wire is idle and retransmit.
• When a cjollision occurs, the device with the lowest MAC address is permitted to retransmit first.
• When a collision occurs, both transmitting devices send a jam signal jto notify all other devices of the collision.