Free JN0-106 Exam Dumps Preview

show chassis hardware lists the installed chassis components and hardware identifiers, including the chassis serial number. Operational and software-version commands do not provide the same hardware inventory view.

The active route is marked with an asterisk, and its forwarding line points to next hop 192.168.0.2 through xe-0/0/0.0. Other protocol entries are not the active forwarding choice.

Junos OS is built from modular processes, so individual functions can run separately, and the architecture separates the control plane from the forwarding plane. It is not defined by running unsigned binaries or merging unrelated policy types.

The count count-icmp action increments the named counter for matching packets. The discard action then silently drops the packet, so it is not forwarded and no ICMP rejection is sent.

Junos OS supports automation capabilities and uses a modular process architecture. It is not limited to routers, and independent processes are the opposite of a single monolithic code base.

A Junos import policy controls whether received routes are accepted into routing information. A firewall filter term matches packet fields and then applies actions such as accept or discard; it is not used for software installation.

A Junos user account needs authentication credentials and a login class that defines permissions. SSH is enabled as a system service, not per user, and bypassing authentication would defeat account security.

A policer limits traffic to a configured rate, including exception traffic sent from the Packet Forwarding Engine to the Routing Engine. CoS markings classify traffic, routing policy controls routes, and schedulers manage output queues.

The routing table is the Routing Engine data structure used to select the best route. It contains routes and prefixes learned from protocols, static configuration, and connected interfaces. The forwarding table is derived from active routing-table choices.

A static default route points all otherwise unknown destinations to a chosen upstream next hop. That fits a small branch that needs one manually defined path instead of a dynamic protocol.

The filter is applied under the me0 interface as an output filter, so it is attached to a physical management interface and evaluates traffic leaving that interface. The term matches SSH by destination port and counts it; no syslog action is configured.

The Routing Engine and Packet Forwarding Engine communicate over an internal Ethernet link inside the device. That link carries control and forwarding information without requiring external cabling or MPLS.

Junos gives direct and local routes the same default preference, and EBGP and IBGP routes also share the BGP preference. Static and direct routes differ, as do OSPF internal and external routes.

An unknown unicast destination is flooded within the same VLAN so the destination can receive it if present. The switch does not send it only to a gateway, drop it for ARP, or leak it into every VLAN.

Transit traffic passes through the device rather than terminating on the Routing Engine. Junos forwards that traffic in the Packet Forwarding Engine without normal control-plane processing.

RADIUS and TACACS+ are supported remote authentication protocols for network device login services. SHA is a hashing algorithm, and IPsec provides secure tunnels rather than user authentication service lookup.

Junos configuration mode uses the # prompt, often with an [edit] context line. The greater-than prompt indicates operational mode, while shell prompts use different characters.

TCP is a transport-layer protocol that provides connection-oriented delivery features, including acknowledgments and error checking. Common applications such as HTTP and SMTP use TCP. It is not simply best effort and is not always faster than UDP.

Junos output filtering lets you pipe command output through match-style filters to show only lines containing a keyword. Rollback, candidate configuration, and rescue configuration are configuration-management features.

Junos supports RADIUS and TACACS+ as external authentication methods for administrative access. These servers can be placed in the authentication order before falling back to local password authentication.

The default IPv6 unicast routing table in Junos is inet6.0. Therefore show route table inet6.0 displays IPv6 routes in the default routing instance; inet.0 is for IPv4 unicast.

Junos firewall filters are stateless packet filters. They can match fields such as protocol and TCP or UDP port numbers at Layer 4, but they do not track sessions or inspect Layer 7 application content.

When an interface address is active, Junos creates a direct route for the connected subnet and a local route for the interface's own address. Static or dynamic routes require separate configuration or protocol learning.

The predefined read-only login class permits viewing operational and configuration information without allowing changes. Operator and super-user provide broader privileges, while unauthorized is not a useful audit account role.

monitor traffic interface ge-0/0/0 performs packet capture output for the specified interface. Interface summaries, MTU details, and live utilization statistics come from other show or monitor interface commands.

Transit traffic is handled in the forwarding plane when packets are being switched through the device. Normal unicast and multicast forwarding fit that model. Exception traffic is punted to the control plane, and broadcast is not a routed transit class.

ping tests IP reachability to a destination, and traceroute shows the hop path used to reach it. Rollback and commit check operate on configuration, not live path testing.

monitor interface ge-0/0/5 provides live interface counters and traffic-rate updates for the specified port. The show commands return snapshots or hardware details, not continuous utilization updates.

In Junos, edits are made in the candidate configuration first. Those proposed changes do not affect the active running configuration until a successful commit promotes the candidate version.

A new MX Series router does not have transit interfaces preconfigured to forward traffic. Interface families, addresses, and protocol settings must be configured before those ports can carry routed traffic.

For ordinary unicast forwarding, the Packet Forwarding Engine looks up the destination in the forwarding table and sends the packet out the single egress interface or next hop selected by that entry.

request system zeroize clears the configuration and returns the device to a factory-default state for redeployment. Storage cleanup commands remove unused files but do not reset the device configuration.

Out-of-band management uses a dedicated management interface such as fxp0.0 or em0.0. Enabling system management-instance places management traffic in a separate routing instance instead of inet.0.

accept and discard are terminating firewall filter actions because they stop evaluation for the matching packet. count is nonterminating, and next term explicitly continues evaluation.