JuniperのJN0-106試験に合格するのは難しいですが、合格できるのはあなたの能力を証明できるだけでなく、国際的な認可を得られます。JuniperのJN0-106試験の準備は重要です。我々It-Passportsの研究したJuniperのJN0-106の復習資料は科学的な方法であなたの圧力を減少します。
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It-Passportsの提供された問題集は更新されました。あなたは試験を準備しているなら、この最新の問題集で有効の復習計画を立てることができます。我々のJN0-106問題集は正式試験のすべての問題を含めています。受験生は試験に順調に合格するのを確保するために、我々はこの質高いJN0-106問題集を提供します。
質問 # 87
Which two functions are performed by the PFE? (Choose two.)
正解：B、C
解説：
The Packet Forwarding Engine (PFE) represents the data plane of a Junos device, responsible for the high- speed processing and movement of packets through the system. Its primary role is to forward transit traffic- data that enters one interface and exits another-at wire speed using specialized hardware such as Application- Specific Integrated Circuits (ASICs). To accomplish this, the PFE utilizes a local copy of the Forwarding Information Base (FIB) provided by the Routing Engine, ensuring that forwarding decisions are made locally without requiring the main CPU ' s intervention for every packet.
In addition to pure forwarding, the PFE is the functional component that implements and executes firewall filters and policing. Because firewall filters must be applied to transit traffic at line rate to prevent bottlenecks, the PFE evaluates incoming and outgoing packets against configured filter terms in hardware. This ensures that security policies and traffic shaping are applied with minimal latency. It is critical to note that the PFE does not maintain the master routing table (RIB) or perform route selection; those " intelligent " control plane functions are strictly the domain of the Routing Engine. By offloading the repetitive tasks of packet inspection and hardware forwarding to the PFE, Junos OS maintains consistent performance even under heavy traffic loads or complex security configurations. Reference: Junos OS Fundamentals, Packet Forwarding Engine Architecture.
質問 # 88
Which routing table is used for IPv6 unicast routes by default?
正解：A
質問 # 89
After the factory default configuration is loaded, which configuration object must be created prior to the first commit?
正解：A
解説：
When a Junos device is initialized with its factory default configuration, it essentially exists in a " blank slate
" state with minimal operational parameters. The most critical security requirement imposed by Junos OS during this initial setup phase is the mandatory configuration of a root-level password. Specifically, the root- authentication object must be defined within the [edit system] hierarchy before the system will allow the candidate configuration to be successfully committed for the first time.
This is a built-in safety mechanism designed to prevent the device from being deployed in an insecure state with an empty administrative password. If an administrator attempts to execute a commit command without having set the root password, the Junos OS parser will return an error and fail the commit process. While setting a host name or configuring management interfaces are best practices for operational readiness, they are not strictly required by the Junos commit-check logic. Only the root-authentication (typically a plain-text password or an encrypted string) is a hard prerequisite to transition the device from the factory-default state to an active, running configuration. Reference: Configuration Basics, Initial Configuration, Security Requirements.
質問 # 90
Which two statements about route preference in Junos are correct? (Choose two.)
正解：B、D
解説：
Route preference is the quantitative value Junos OS uses to rank the trustworthiness of different routing sources when multiple protocols provide a path to the same destination. A critical architectural distinction in Junos is that both direct and local routes share the same default preference value of 0. Direct routes represent subnets physically connected to an interface, while local routes represent the specific IP address assigned to the device interface itself. Because a value of 0 is the lowest possible numerical value, these routes are always preferred over any learned via dynamic protocols or static configuration.
Additionally, Junos OS treats External BGP (EBGP) and Internal BGP (IBGP) differently than other vendors by assigning both an identical default preference of 170. This means that if the same prefix is learned via both EBGP and IBGP, the preference value alone will not determine the active route; the system must instead proceed to the standard BGP path selection algorithm (evaluating attributes like Local Preference, AS Path, and Origin) to break the tie. In contrast, OSPF distinguishes between its route types, assigning a preference of
10 to internal routes and 150 to AS external routes. Understanding these default values-specifically the parity between direct/local and the unified preference for BGP variants-is foundational for predicting how the Routing Engine populates the forwarding table. Reference: Routing Fundamentals, Default Route Preference Values.
質問 # 91
What are two functions of the Routing Engine? (Choose two.)
正解：C、D
解説：
The Routing Engine (RE) is the " brains " of a Juniper device, representing the control plane in the Junos dual-plane architecture. One of its primary functions is that it runs the Junos OS . The RE is essentially a high-performance workstation running a specialized version of FreeBSD that hosts the various software daemons responsible for the device ' s logic, such as the Routing Protocol Process (rpd) and the Device Control Process (dcd).
The second core function is that the RE processes all management traffic . Any packet destined for the router itself-such as an SSH session, an SNMP poll, a NETCONF request, or an NTP update-is handled by the Routing Engine ' s CPU. The RE also maintains the master routing table, manages configuration commits, and provides the CLI environment for the administrator.
It is critical to distinguish these control-plane duties from the duties of the Packet Forwarding Engine (PFE)
. The PFE is responsible for the " heavy lifting, " such as processing transit traffic (data passing through the router) and evaluating firewall filters at wire speed. While the RE defines the policies and routing tables, it hands off a streamlined version of this information to the PFE so the RE isn ' t bogged down by millions of individual packets. This separation ensures that a busy management session or a complex routing calculation on the RE doesn ' t impact the device ' s ability to forward traffic at maximum capacity.
Reference: Junos OS Fundamentals, Control Plane and Forwarding Plane.
質問 # 92
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