JNCIA-ER PRE-Assessment Exam

JNCIA-ER PRE-Assessment Exam

Q1. Which J-Web menu should you use to view the router's "last known good" configuration?

• Configuration > View and Edit
• Configuration > Rescue
• Configuration > Rollback
• Configuration > History

Q2. Which J-Web window pane allows you to view and manage licenses?

• Monitor
• Configuration
• Diagnose
• Manage

Q3. Which major J-Web menu should you use to view the physical hardware in the router?

• Manage
• Diagnose
• Configuration
• Monitor

Q4. You are logged in to an M10i router as the lab user. The J-Web 8.0R2.8 package is located in your home directory.

Which CLI command would install the J-Web interface?

• Load software jweb-8.0R2.8-signed.tgz
• Load software /home/lab/jweb-8.0R2.8-signed.tgz
• Request system software add jweb-8.0R2.8-signed.tgz
• Request system software add /home/lab/jweb-8.0R2.8-signed.tgz

Q5. Which J-Web menu displays the amount of free space on the router's compact flash?

• Manage > System
• Diagnose > Flash
• Monitor > System
• Monitor > Flash

Q6. What is the purpose of the services interface?

• Processes traffic using class-of-service.
• Provides various layer 2 and layer 3 services.
• Used to bundle Ethernet interfaces on M-series routers.
• Allows for secure shell access to the router.

Q7. Which definition most accurately describes VRRP?

• An election protocol used to designate one of multiple routers as the master router, which serves as the forwarding next-hop for the LAN.
• A virtual protocol which makes VPN communications possible.
• A redundancy protocol used to identify the active WAN circuit.
• A link-state routing protocol used in Ethernet environments.

Q8. Which three daemons are contained in the JUNOS software?

There are 3 correct answers

• VPN
• Routing Protocol
• Management
• Chassis

Q9. Which two statements regarding the JUNOS software user authentication methods are correct?

There are 2 correct answers

• Multiple users can authenticate using a common local user account.
• Only one authentication method can be configured.
• Multiple authentication methods can be configured.
• All users must be configured locally on the router.

Q10. Which CLI command displays the hardware currently installed in the router?

• Show chassis alarms
• Show system hardware
• Show chassis hardware
• Show system environment

Q11. Which statements are true regarding DHCP services and J-series routers?

There are 2 correct answers

• J-series routers can operate as a DHCP-relay agent only.
• J-series routers can operate as a DHCP server.
• J-series routers can function as a DHCP-relay agent and DHCP server simultaneously.
• J-series routers can relay DHCP requests from one LAN to another.

12. Which CLI command displays any active alarms on the router?

• Show system alarms
• Show chassis alarms
• Show system environment
• Show chassis environment

Q13. Which configuration statement contacts a TACACS+ server when the primary RADIUS server is unreachable?

• [edit] system { authentication-order [ radius tacacs+ ]; }
• [edit] authentication { login-order [ radius tacplus ]; }
• [edit] system { authentication-order [ radius tacplus ]; }
• [edit] authentication { login-order [ radius tacplus ]; }

Q14. What are three characteristics of the JUNOS software?

There are 3 correct answers

• Contains a modular operating system.
• Separate forwarding and control planes.
• Single software train for all M,T and J-series routers.
• Contains easy to read registry keys.

Q15. What statements about ALGs are true?

There are 2 correct answers

• ALGs monitor protocol exchanges and perform address and port translations within the payload for certain protocols.
• ALGs allow the router to interact with layer 4 and above when performing translation services.
• ALGs are required whenever NAT is used.
• ALGs are only used when PAT is configured.

Q16. Which type of IGP should you use to achieve scalability in a large enterprise network?

• Distance-vector protocol
• Link-state protocol
• Bellman-Ford protocol
• Path-vector protocol

Q17. What are two services provided by the SDX?

There are 2 correct answers

• Customized firewall modifications
• An XML interface for router configuration
• Usage tracking and accounting
• Secure remote access to the router

Q18. Which statements are true regarding the ASM?CD

There are 2 correct answers

• The ASM supports only layer 3 services.
• The ASM comes standard with all M7i and M10i routers.
• The ASM supports the layer 2 and layer 3 service packages simultaneously.
• The ASM is an option when ordering the M7i.

Q19. You have a router which does not have the J-Web interface installed by default.

Which CLI command installs the J-Web package?

• Load system software jweb-8.0R2.8-signed.tgz
• Install package jweb-8.0R2.8-signed.tgz
• Request system software add jweb-8.0R2.8-signed.tgz
• Package add jweb-8.0R2.8-signed.tgz

Q20. Which VRRP configuration option monitors the state of an interface and is capable of initiating a change in mastership if the monitored interface goes down?

• Snoop
• Monitor
• Preempt
• Track

Q21. Which JUNOS software feature forms the basis for JUNOScope?

• J-Web
• JUNOScript
• BSD Kernel
• SDX

Q22. Which configuration option allows you to view auto installation messages?

• Trace options
• Debug
• View
• Decode

Q23. Which of the following address assignment options are available when configuring NAT?

There are 2 correct answers

• Static
• Dynamic
• One-to-one
• One-to-many

Q24. Within the J-Web initial setup wizard, which menu is used to configure the hostname of the router?

• Set Up
• Interfaces
• Users
• Routing

Q25. Which MLPPP configuration statement determines the threshold for maintaining the state of an MLPPP bundle?

• Link-limit
• Link-threshold
• Minimum-threshold
• Minimum-links

Q26. What are three protocol limitations of RIP? (Choose three.)

• It has a maximum network diameter.
• It can only be used on broadcast links.
• It will count to infinity and slow down loop prevention.
• It will send periodic updates of the entire routing table.

Q27. What is the JUNOS software term for decoding protocol packets?

• Dump
• Stat
• Trace
• Debug

Q28. Which CLI command displays all static routes in the routing table?

• Show static all
• Show route static
• Show static route
• Show route protocol static

Q29. When using the J-Web interface to configure RIP, which two policies are automatically configured by the router? (Choose two.)

• Import policy to block RIP routes.
• Import policy to block direct routes.
• Export policy to advertise RIP routes.
• Export policy to advertise direct routes.

Q30. Which statement describes the function of a routing policy?

• It controls the size of routing protocol packets.
• It allows routing protocols to be auto configured.
• It allows for the configuration and management of user permissions.
• It controls routing information transferred in and out of the routing table.

Q31. Which type of routing protocol is RIP?

• Link state
• Path vector
• Policy based
• Distance vector

Q32. Which routing technology is often used when a customer is single-homed to a service provider?

• RIP
• BGP
• Static
• OSPF

Q33. Which command configures a minimal SNMP Configuration?

• edit snmp community juniper
• set snmp server 10.12.1.1 version 2c
• set snmp community juniper authorization read-only
• snmp community juniper authorization read-only

Q34. Which protocol family must be configured on an interface to allow ICMP traffic to be received?

• IP
• INET
• ICMP
• Management

Q35. Which statements are true regarding DHCP services and J-series routers?

• J-series routers can operate as a DHCP-relay agent only.
• J-series routers can operate as a DHCP server
• J-series routers can function as DHCP-relay agent and DHCP server simultaneously
• J-series routers can relay DHCP requests from one LAN to another

Q36. Which CLI command displays the current RIP configuration on a J-series router?

• Show protocols rip
• Show configuration rip
• Show rip configuration
• Show configuration protocols rip

Q37. Which tool can be used to verify that packets are using the correct path toward a given destination?

• Ping
• Netstat
• Nslookup
• Traceroute

Q38. What is one way to activate the rescue configuration on a J-series router?

• Issue the load rescue command.
• Issue the activate rescue command.
• Press the rescue button for less than 5 seconds.
• Press the configuration button for less than 5 seconds.

Q39. Which type of policy allows RIP routes to be placed into OSPF?

• RIP import policy
• RIP export policy
• OSPF import policy
• OSPF export policy

Q40. What are two action types in the Juniper routing policy? (Choose two.)

• Sorting
• EE-writing
• Terminating
• Modifying

Q41. Where do you configure a RIP neighbor in the CLI?

• Under [routing rip neighbor]
• Under [protocols rip neighbor]
• Under [routing rip group "group-name" neighbor]
• Under [protocols rip group "group-name" neighbor