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>> Juniper JN0-106 Actualtest <<
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NEW QUESTION # 51
You are using the factory default configuration on a new Juniper router. You must successfully commit the configuration and activate the device. Which component must be configured before Junos OS will allow you to accomplish this task?
Answer: D
Explanation:
When a Junos device is initialized for the first time or after a factory reset, it operates with a " factory-default
" configuration. This configuration contains the minimum settings necessary for the device to boot, but it lacks essential security parameters. The Junos OS kernel enforces a strict security mechanism that prevents any administrator from successfully executing a commit command until a root-level password has been defined.
Specifically, the root-authentication object must be configured under the [edit system] hierarchy. This requirement ensures that no Junos device is deployed into a production environment with an open, unauthenticated root account. If an administrator attempts to commit changes without this setting, the configuration parser will return a " missing mandatory statement " error and the commit process will fail.
While other settings-such as a system hostname, management IP address (on the fxp0 or me0 interfaces), or logical interface configurations-are critical for operational readiness, they are not strictly enforced by the system validation logic for the initial activation. Only the root-authentication (which can be a plain-text password or an encrypted key) is a hard prerequisite for transitioning the device from a default state to an active, running configuration.
Reference: Configuration Basics, Initial Configuration, System Security.
NEW QUESTION # 52
You are creating a new user account on your Junos device. The user must be able to validate the routing table and interface statistics but should not be able to make any configuration changes. In this scenario, which permission flag would satisfy this requirement?
Answer: D
Explanation:
User access control in Junos OS is managed through the application of permission flags within login classes.
When an architect needs to define a role that allows for robust monitoring and troubleshooting without granting authority to alter the device ' s operational state, the view permission flag is the appropriate selection.
This flag grants the user the ability to execute the majority of show commands in operational mode, which includes viewing the routing table, inspecting interface statistics, and checking hardware status.
The view permission is specifically designed for " read-only " access. It ensures that the user can observe all necessary telemetry data to validate network health-satisfying the requirement to check routing and interface stats-while strictly prohibiting access to configuration mode or any set commands. This contrasts with the configure flag, which allows modification of the candidate configuration, or the network flag, which provides specific permissions related to network-level operational tasks. By assigning a user to a class restricted with the view flag, an administrator maintains a secure environment where support personnel can diagnose issues without the risk of accidental or unauthorized configuration changes. This principle of least privilege is a cornerstone of Junos security management. Reference: User Interfaces, User Management and Access Control.
NEW QUESTION # 53
Which protocol is responsible for learning an IPv4 neighbor's MAC address?
Answer: D
Explanation:
The Address Resolution Protocol (ARP) is a fundamental protocol used in IPv4 networking to map an IP address to its corresponding MAC (Media Access Control) address. When an IPv4 device wants to communicate with another device on the same local network, it uses ARP to find out the MAC address associated with the target device's IP address. This ensures that IP packets can be encapsulated into Ethernet frames and delivered to the correct hardware address on the local network segment. ARP does not apply to IPv6, where Neighbor Discovery Protocol (NDP) performs a similar function.
NEW QUESTION # 54
Which two statements describe characteristics of Junos OS zones on an SRX device? (Choose two.)
Answer: B,C
Explanation:
Zones logically group interfaces to simplify policy application. Security policies are then used to permit or deny traffic flowing between different zones (or within the same zone, depending on configuration).
NEW QUESTION # 55
Which command is used to display OSPF neighbor adjacency status on a Junos device?
Answer: D
Explanation:
The show ospf neighbor command displays the state of OSPF adjacencies with neighboring routers, including neighbor ID, state (such as Full), and interface.
NEW QUESTION # 56
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