Juniper Junos Associate (JNCIA -
JUNOS)
What is the SRX series? - ✔️✔️SRX Series Service Gateways provide up to 2 Tbps of
full-duplex throughput.
What is the JATP series? - ✔️✔️Collects and processes security events identified by
the SRX and third-party security products.
What is the JSA series? - ✔️✔️Provides security information and event management
(SIEM) system that consolidates large volumes of event data
What is the NFX series? - ✔️✔️Junos OS CPE devices designed to provide faster
custom service delivery on demand
True or False
Junos OS can run in a Virtual Machine - ✔️✔️True
Junos OS can run on a Virtual Machine and functions as the physical device would.
What is the Routing Engine? - ✔️✔️The brain of the platform
Responsible for performing protocol and system management.
Runs various protocol and management software in a protected memory environment
Contains the:
-Routing table
-Bridging table
-Forwarding table
What is the Packet Routing Engine? - ✔️✔️Runs on separate hardware.
Responsible for forwarding transit traffic through the device
High availability features such (graceful Routing Engine switchover (GRES), nonstop
active routing (NSR), and unified in-service software upgrades (ISSUs)) can be included
in the design.
What is Transit Traffic processing? - ✔️✔️Transit traffic is forwarded through the local
system.
, Traffic Forwarding Engine (PFE) uses the forwarding table (also known as forwarding
information base [FIB]) provided by the Routing Engine.
What is Exception Traffic processing? - ✔️✔️Exception traffic is processed by the local
system.
Traffic destined for the local system is processed by the Routing Engine CPU
What type of traffic does the Packet Forwarding Engine require the generation? -
✔️✔️Internet Control Message Protocol (ICMP) messages (such as time-to-live (TTL)
expired messages)
What Is Junos OS? - ✔️✔️The operating system that drives all of Juniper's physical
and virtual networking products.
What does a Modular Software architecture allow for? - ✔️✔️Ensures one process
cannot directly interfere with another.
Ensures that new features can be added with less likelihood of breaking functionality.
What does Disaggregation do? - ✔️✔️Enables a more flexible licensing consumption
model for network applications.
Enables a DevOps approach.
What is the purpose for having all modules run in a sperate memory space? -
✔️✔️Prevents one module from messing up another.
Allows for a restart of a single module instead of the whole system.
The modular architecture allows for highly scalable software
Why is exception traffic rate-limited on the internal line? - ✔️✔️To protect the Routing
Engine from potential DOS attacks
What does Junos OS run on? - ✔️✔️Switches, routers, security devices, devices in
large and small networks, devices in enterprise and service provider environments
What are the Junos OS Routing devices? - ✔️✔️MX series
PTX Series
What is the MX series? - ✔️✔️The MX series Ethernet service routers provide up to 80
Tbps of aggregate half-duplex throughput.
JUNOS)
What is the SRX series? - ✔️✔️SRX Series Service Gateways provide up to 2 Tbps of
full-duplex throughput.
What is the JATP series? - ✔️✔️Collects and processes security events identified by
the SRX and third-party security products.
What is the JSA series? - ✔️✔️Provides security information and event management
(SIEM) system that consolidates large volumes of event data
What is the NFX series? - ✔️✔️Junos OS CPE devices designed to provide faster
custom service delivery on demand
True or False
Junos OS can run in a Virtual Machine - ✔️✔️True
Junos OS can run on a Virtual Machine and functions as the physical device would.
What is the Routing Engine? - ✔️✔️The brain of the platform
Responsible for performing protocol and system management.
Runs various protocol and management software in a protected memory environment
Contains the:
-Routing table
-Bridging table
-Forwarding table
What is the Packet Routing Engine? - ✔️✔️Runs on separate hardware.
Responsible for forwarding transit traffic through the device
High availability features such (graceful Routing Engine switchover (GRES), nonstop
active routing (NSR), and unified in-service software upgrades (ISSUs)) can be included
in the design.
What is Transit Traffic processing? - ✔️✔️Transit traffic is forwarded through the local
system.
, Traffic Forwarding Engine (PFE) uses the forwarding table (also known as forwarding
information base [FIB]) provided by the Routing Engine.
What is Exception Traffic processing? - ✔️✔️Exception traffic is processed by the local
system.
Traffic destined for the local system is processed by the Routing Engine CPU
What type of traffic does the Packet Forwarding Engine require the generation? -
✔️✔️Internet Control Message Protocol (ICMP) messages (such as time-to-live (TTL)
expired messages)
What Is Junos OS? - ✔️✔️The operating system that drives all of Juniper's physical
and virtual networking products.
What does a Modular Software architecture allow for? - ✔️✔️Ensures one process
cannot directly interfere with another.
Ensures that new features can be added with less likelihood of breaking functionality.
What does Disaggregation do? - ✔️✔️Enables a more flexible licensing consumption
model for network applications.
Enables a DevOps approach.
What is the purpose for having all modules run in a sperate memory space? -
✔️✔️Prevents one module from messing up another.
Allows for a restart of a single module instead of the whole system.
The modular architecture allows for highly scalable software
Why is exception traffic rate-limited on the internal line? - ✔️✔️To protect the Routing
Engine from potential DOS attacks
What does Junos OS run on? - ✔️✔️Switches, routers, security devices, devices in
large and small networks, devices in enterprise and service provider environments
What are the Junos OS Routing devices? - ✔️✔️MX series
PTX Series
What is the MX series? - ✔️✔️The MX series Ethernet service routers provide up to 80
Tbps of aggregate half-duplex throughput.
