JNCIA exam with verified solutions
The Control Plane runs on which Engine? The Forwarding Plane? - correct
x x x x x x x x x x x x
answer ✔Control Plane runs on the Routing Engine. Forwarding Plane runs on
x x x x x x x x x x x
xthe Packet Forwarding Engine.
x x x
Because software processes are compartmentalized, that means? (2 things) -
x x x x x x x x x x
correct answer ✔Each runs in own protected memory space; new features
x x x x x x x x x x x
can be added with less likelihood of breaking current functionality.
x x x x x x x x x
In Juniper architecture, what is the primary function of the control plane? -
x x x x x x x x x x x x x
correct answer ✔maintain routing intelligence, control and monitor chassis,
x x x x x x x x x
manage the PFE. x x
In Juniper architecture, what is the primary function of the forwarding plane?
x x x x x x x x x x x
x- correct answer ✔Forward packets and implement advanced services.
x x x x x x x x
How is transit traffic processed? - correct answer ✔For platforms running
x x x x x x x x x x x
JunOS, forwarded through the PFE based on forwarding table installed on the
x x x x x x x x x x x
xPFE.
How is exception traffic processed? - correct answer ✔processed locally
x x x x x x x x x x
either by the Routing Engine or by the Packet Forwarding Engine depending
x x x x x x x x x x x x
on the type of traffic.
x x x x
Which Juniper platforms run JunOS? - correct answer ✔These series: M, T, J,
x x x x x x x x x x x x x
MX, EX, SRX x x
,What does GRES stand for? - correct answer ✔Graceful Routing Engine
x x x x x x x x x x x
Switchover.
What does NSR stand for? - correct answer ✔Nonstop Active Routing.
x x x x x x x x x x
What does ISSU stand for? - correct answer ✔Unified in-service softwar
x x x x x x x x x x x
upgrades.
Name 3 High Availability features. - correct answer ✔GRES - Graceful Routing
x x x x x x x x x x x x
Engine Switchover; NSR - Nonstop Active Routing; ISSU - Unified in-service
x x x x x x x x x x x
software upgrades x
Define Exception traffic. Give examples. - correct answer ✔Traffic destined to
x x x x x x x x x x x
the Juniper device itself. Example: routing protocol updates, telnet sessions,
x x x x x x x x x x
traceroutes, replies to sourced traffic, traffic requiring icmp replies.
x x x x x x x x
M series - Multiservice Routers. How much throughput? Give example of
x x x x x x x x x x x
deployment? - correct answer ✔Throughput: up to 320 Gbps of aggregate
x x x x x x x x x x x
half-duplex throughput. Deploy in high-end enterprise, and service provider
x x x x x x x x x
environments.
T series - Core routers. What is the throughput? Give example of
x x x x x x x x x x x x
deployment. - correct answer ✔Throughput: up to 25.6 Tbps. Example
x x x x x x x x x x
deployment: service provider core. x x x
,J series - Services routers. What is the throughput? Give example of
x x x x x x x x x x x x
deployment. - correct answer ✔Throughput: up to 2 Gbps. Example
x x x x x x x x x x
deployment: branch and remote locations. x x x x
MX series - Ethernet Services Router. What is the throughput? Give example
x x x x x x x x x x x x
of deployment. - correct answer ✔Throughput: up to 960 Gbps of aggregate
x x x x x x x x x x x x
half-duplex throughput. Example deployment: dense dedicated access
x x x x x x x
aggregation & provider edges services. x x x x
EX series - Ethernet switches. What is the throughput? Give example of
x x x x x x x x x x x x
deployment. - correct answer ✔Throughput: 6.2 Tbps full duplex. Example
x x x x x x x x x x
deployment: low to high density enterprise & data center environments.
x x x x x x x x x
SRX series - Services Gateways. What is the throughput? Give example of
x x x x x x x x x x x x
deployment. - correct answer ✔Throughput: up to 120 Gbps of full duplex.
x x x x x x x x x x x x
Example deployment: to meet network/security requirements for
x x x x x x x
consolidated data centers, managed services deployments, aggregation of
x x x x x x x x
security services. x
Which modes exist in JunOS? - correct answer ✔Operational, Configuration,
x x x x x x x x x x
FreeBSD shell. x
JunOS Operational mode is used to do what? - correct answer ✔Monitor &
x x x x x x x x x x x x x
Troubleshoot: the software, network connectivity, and hardware. x x x x x x
The JunOS Configuration mode is used to do what? - correct answer
x x x x x x x x x x x x
✔Configure: interfaces protocols, user access, and system hardware.
x x x x x x x
What is the spacebar used for? - correct answer ✔To complete a command.
x x x x x x x x x x x x
, What is the tab used for? - correct answer ✔To complete a variable.
x x x x x x x x x x x x
What command is quickest to return to the uppermost level of the
x x x x x x x x x x x x
configuration hierarchy? - correct answer ✔top
x x x x x
What is the difference between the Active and Candidate configurations? -
x x x x x x x x x x x
correct answer ✔Difference is whether the config has been committed and in
x x x x x x x x x x x x
use. Active = comitted and in use. Candidate = doesn't become the Active
x x x x x x x x x x x x x
config until commit command performed.
x x x x
What is the command to display the difference between the candidate and
x x x x x x x x x x x x
active configurations? - correct answer ✔show | compare
x x x x x x x
What are the three 'help' command options? - correct answer ✔help topic
x x x x x x x x x x x x
<topic> ; help reference <config-statement> ; help apropos <keyword>
x x x x x x x x
Key combo to: move left 1 character? - correct answer ✔Control B
x x x x x x x x x x x
Key combo to: move to beginning of line - correct answer ✔Control A
x x x x x x x x x x x x
Key combo to: move right 1 character - correct answer ✔Control F
x x x x x x x x x x x
Key combo to: move to end of line - correct answer ✔Control E
x x x x x x x x x x x x
Key combo to: delete character over the cursor - correct answer ✔Control D
x x x x x x x x x x x x
The Control Plane runs on which Engine? The Forwarding Plane? - correct
x x x x x x x x x x x x
answer ✔Control Plane runs on the Routing Engine. Forwarding Plane runs on
x x x x x x x x x x x
xthe Packet Forwarding Engine.
x x x
Because software processes are compartmentalized, that means? (2 things) -
x x x x x x x x x x
correct answer ✔Each runs in own protected memory space; new features
x x x x x x x x x x x
can be added with less likelihood of breaking current functionality.
x x x x x x x x x
In Juniper architecture, what is the primary function of the control plane? -
x x x x x x x x x x x x x
correct answer ✔maintain routing intelligence, control and monitor chassis,
x x x x x x x x x
manage the PFE. x x
In Juniper architecture, what is the primary function of the forwarding plane?
x x x x x x x x x x x
x- correct answer ✔Forward packets and implement advanced services.
x x x x x x x x
How is transit traffic processed? - correct answer ✔For platforms running
x x x x x x x x x x x
JunOS, forwarded through the PFE based on forwarding table installed on the
x x x x x x x x x x x
xPFE.
How is exception traffic processed? - correct answer ✔processed locally
x x x x x x x x x x
either by the Routing Engine or by the Packet Forwarding Engine depending
x x x x x x x x x x x x
on the type of traffic.
x x x x
Which Juniper platforms run JunOS? - correct answer ✔These series: M, T, J,
x x x x x x x x x x x x x
MX, EX, SRX x x
,What does GRES stand for? - correct answer ✔Graceful Routing Engine
x x x x x x x x x x x
Switchover.
What does NSR stand for? - correct answer ✔Nonstop Active Routing.
x x x x x x x x x x
What does ISSU stand for? - correct answer ✔Unified in-service softwar
x x x x x x x x x x x
upgrades.
Name 3 High Availability features. - correct answer ✔GRES - Graceful Routing
x x x x x x x x x x x x
Engine Switchover; NSR - Nonstop Active Routing; ISSU - Unified in-service
x x x x x x x x x x x
software upgrades x
Define Exception traffic. Give examples. - correct answer ✔Traffic destined to
x x x x x x x x x x x
the Juniper device itself. Example: routing protocol updates, telnet sessions,
x x x x x x x x x x
traceroutes, replies to sourced traffic, traffic requiring icmp replies.
x x x x x x x x
M series - Multiservice Routers. How much throughput? Give example of
x x x x x x x x x x x
deployment? - correct answer ✔Throughput: up to 320 Gbps of aggregate
x x x x x x x x x x x
half-duplex throughput. Deploy in high-end enterprise, and service provider
x x x x x x x x x
environments.
T series - Core routers. What is the throughput? Give example of
x x x x x x x x x x x x
deployment. - correct answer ✔Throughput: up to 25.6 Tbps. Example
x x x x x x x x x x
deployment: service provider core. x x x
,J series - Services routers. What is the throughput? Give example of
x x x x x x x x x x x x
deployment. - correct answer ✔Throughput: up to 2 Gbps. Example
x x x x x x x x x x
deployment: branch and remote locations. x x x x
MX series - Ethernet Services Router. What is the throughput? Give example
x x x x x x x x x x x x
of deployment. - correct answer ✔Throughput: up to 960 Gbps of aggregate
x x x x x x x x x x x x
half-duplex throughput. Example deployment: dense dedicated access
x x x x x x x
aggregation & provider edges services. x x x x
EX series - Ethernet switches. What is the throughput? Give example of
x x x x x x x x x x x x
deployment. - correct answer ✔Throughput: 6.2 Tbps full duplex. Example
x x x x x x x x x x
deployment: low to high density enterprise & data center environments.
x x x x x x x x x
SRX series - Services Gateways. What is the throughput? Give example of
x x x x x x x x x x x x
deployment. - correct answer ✔Throughput: up to 120 Gbps of full duplex.
x x x x x x x x x x x x
Example deployment: to meet network/security requirements for
x x x x x x x
consolidated data centers, managed services deployments, aggregation of
x x x x x x x x
security services. x
Which modes exist in JunOS? - correct answer ✔Operational, Configuration,
x x x x x x x x x x
FreeBSD shell. x
JunOS Operational mode is used to do what? - correct answer ✔Monitor &
x x x x x x x x x x x x x
Troubleshoot: the software, network connectivity, and hardware. x x x x x x
The JunOS Configuration mode is used to do what? - correct answer
x x x x x x x x x x x x
✔Configure: interfaces protocols, user access, and system hardware.
x x x x x x x
What is the spacebar used for? - correct answer ✔To complete a command.
x x x x x x x x x x x x
, What is the tab used for? - correct answer ✔To complete a variable.
x x x x x x x x x x x x
What command is quickest to return to the uppermost level of the
x x x x x x x x x x x x
configuration hierarchy? - correct answer ✔top
x x x x x
What is the difference between the Active and Candidate configurations? -
x x x x x x x x x x x
correct answer ✔Difference is whether the config has been committed and in
x x x x x x x x x x x x
use. Active = comitted and in use. Candidate = doesn't become the Active
x x x x x x x x x x x x x
config until commit command performed.
x x x x
What is the command to display the difference between the candidate and
x x x x x x x x x x x x
active configurations? - correct answer ✔show | compare
x x x x x x x
What are the three 'help' command options? - correct answer ✔help topic
x x x x x x x x x x x x
<topic> ; help reference <config-statement> ; help apropos <keyword>
x x x x x x x x
Key combo to: move left 1 character? - correct answer ✔Control B
x x x x x x x x x x x
Key combo to: move to beginning of line - correct answer ✔Control A
x x x x x x x x x x x x
Key combo to: move right 1 character - correct answer ✔Control F
x x x x x x x x x x x
Key combo to: move to end of line - correct answer ✔Control E
x x x x x x x x x x x x
Key combo to: delete character over the cursor - correct answer ✔Control D
x x x x x x x x x x x x
