JNCIA-Junos: Practice Test One
UPDATED ACTUAL Questions and
CORRECT Answers
1.With regard to the Junos software architecture, which two of the following are found on all
Junos devices? (Choose two.) - CORRECT ANSWER✔✔- Multiple software daemons.
separation of control and forwarding.
2. What are two Junos processes? (Choose two.) - CORRECT ANSWER✔✔- Packet
Forwarding Engine process.
routing protocols process.
3. The Junos software kernel is based on which operating system?FreeBSD - CORRECT
ANSWER✔✔- FreeBSD
4. Which two statements are correct regarding the internal link between the control plane and
forwarding plane? (Choose two.) - CORRECT ANSWER✔✔- 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 configurabmmmle.
5. What are three examples of exception traffic? (Choose three.) - CORRECT ANSWER✔✔-
OSPF protocol updates.
SNMP traffic destined to the Junos device.
Packets with special IP options fields.
6. Which part of the Junos architecture handles ICMP time-to-live (TTL) expired messages? -
CORRECT ANSWER✔✔- forwarding plane.
7. What are two functions of the Packet Forwarding Engine? (Choose two.) - CORRECT
ANSWER✔✔- to forward packets based on the forwarding table.
to implement policing, firewall filtering, and class of service (CoS)
, 8. When a non-root user connects to a Junos device and successfully enters a username and
password, they are immediately placed at which level? - CORRECT ANSWER✔✔-
operational mode.
9. In which Junos mode are users allowed to monitor and troubleshoot software, network
connectivity, and hardware? - CORRECT ANSWER✔✔- operational.
10. In which mode can you configure a device running Junos? - CORRECT ANSWER✔✔-
configuration.
11. Which Junos mode should you use to view the status of interfaces on a router? -
CORRECT ANSWER✔✔- operational
12. Which statement about the Junos CLI is true? - CORRECT ANSWER✔✔- Automatic
word completion can be disabled in operational mode.
13. What information does the help reference command provide? (Choose three.) -
CORRECT ANSWER✔✔- command syntax.
command default parameters and allowed value ranges.
the configuration level at which the command can be entered.
14. The auto-complete feature in the Junos CLI is triggered by which methods? - CORRECT
ANSWER✔✔- pressing the Tab key for both variable and command completion and the
Spacebar for command completion
15. What information does the help topic command provide? - CORRECT ANSWER✔✔-
software documentation describing features and configuration tasks within the Junos OS
16. Which character in the Junos software CLI allows you to filter and manipulate command
output? - CORRECT ANSWER✔✔- pipe character.
17. When you first log in to a router, how does the router indicate that factory defaults are
being used? - CORRECT ANSWER✔✔- The router's host name is Amnesiac.
UPDATED ACTUAL Questions and
CORRECT Answers
1.With regard to the Junos software architecture, which two of the following are found on all
Junos devices? (Choose two.) - CORRECT ANSWER✔✔- Multiple software daemons.
separation of control and forwarding.
2. What are two Junos processes? (Choose two.) - CORRECT ANSWER✔✔- Packet
Forwarding Engine process.
routing protocols process.
3. The Junos software kernel is based on which operating system?FreeBSD - CORRECT
ANSWER✔✔- FreeBSD
4. Which two statements are correct regarding the internal link between the control plane and
forwarding plane? (Choose two.) - CORRECT ANSWER✔✔- 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 configurabmmmle.
5. What are three examples of exception traffic? (Choose three.) - CORRECT ANSWER✔✔-
OSPF protocol updates.
SNMP traffic destined to the Junos device.
Packets with special IP options fields.
6. Which part of the Junos architecture handles ICMP time-to-live (TTL) expired messages? -
CORRECT ANSWER✔✔- forwarding plane.
7. What are two functions of the Packet Forwarding Engine? (Choose two.) - CORRECT
ANSWER✔✔- to forward packets based on the forwarding table.
to implement policing, firewall filtering, and class of service (CoS)
, 8. When a non-root user connects to a Junos device and successfully enters a username and
password, they are immediately placed at which level? - CORRECT ANSWER✔✔-
operational mode.
9. In which Junos mode are users allowed to monitor and troubleshoot software, network
connectivity, and hardware? - CORRECT ANSWER✔✔- operational.
10. In which mode can you configure a device running Junos? - CORRECT ANSWER✔✔-
configuration.
11. Which Junos mode should you use to view the status of interfaces on a router? -
CORRECT ANSWER✔✔- operational
12. Which statement about the Junos CLI is true? - CORRECT ANSWER✔✔- Automatic
word completion can be disabled in operational mode.
13. What information does the help reference command provide? (Choose three.) -
CORRECT ANSWER✔✔- command syntax.
command default parameters and allowed value ranges.
the configuration level at which the command can be entered.
14. The auto-complete feature in the Junos CLI is triggered by which methods? - CORRECT
ANSWER✔✔- pressing the Tab key for both variable and command completion and the
Spacebar for command completion
15. What information does the help topic command provide? - CORRECT ANSWER✔✔-
software documentation describing features and configuration tasks within the Junos OS
16. Which character in the Junos software CLI allows you to filter and manipulate command
output? - CORRECT ANSWER✔✔- pipe character.
17. When you first log in to a router, how does the router indicate that factory defaults are
being used? - CORRECT ANSWER✔✔- The router's host name is Amnesiac.
