Most Recent Juniper JN0-636 Exam Questions & Answers

According to the security flow trace shown in the exhibit, which is a snippet of a packet capture on an SRX Series device, the two statements that are correct are:

This packet arrived on interface ge-0/0/4.0.This is indicated by the lineIn: 10.0.1.129/22 -> 10.0.1.129/3382;1,0x0, which shows that the ingress interface of the packet is ge-0/0/4.0, as the interface name is prefixed to the source and destination IP addresses and ports of the packet1.

An existing session is found in the table.This is indicated by the lineFound: session id 0x12. sess tok 28685, which shows that the packet matches an existing session in the session table with the session ID 0x12 and the session token 286852.

The following statements are incorrect or not supported by the output:

Destination NAT occurs. This is not supported by the output, as there is no indication of destination NAT being applied to the packet. The destination IP address of the packet is 10.0.1.129, which is the same as the destination IP address of the original packet. If destination NAT was applied, the destination IP address of the packet would be different from the destination IP address of the original packet.

The capture is a packet from the source address 172.20.101.10 destined to 10.0.1.129. This is false, as the output shows that the source address of the packet is 10.0.1.129, not 172.20.101.10. The source IP address of the packet is prefixed to the ingress interface name ge-0/0/4.0.

To solve the problem of the operator user being unable to save configuration files to a USB stick that is plugged into SRX, you need to add the system-control permission flag to the operations class. The other options are incorrect because:

A) Adding the floppy permission flag to the operations class is not sufficient or necessary to save configuration files to a USB stick. The floppy permission flag allows the user to access the floppy drive, but not the USB drive.The USB drive is accessed by the system permission flag, which is already included in the operations class1.

C) Adding the interface-control permission flag to the operations class is also not sufficient or necessary to save configuration files to a USB stick. The interface-control permission flag allows the user to configure and monitor interfaces, but not to save configuration files.The configuration permission flag, which is also already included in the operations class, allows the user to save configuration files1.

D) Adding the system permission flag to the operations class is redundant and ineffective to save configuration files to a USB stick. The system permission flag allows the user to access the system directory, which includes the USB drive.However, the operations class already has the system permission flag by default1. The problem is not the lack of system permission, but the lack of system-control permission.

Therefore, the correct answer is B. You need to add the system-control permission flag to the operations class to solve the problem.The system-control permission flag allows the user to perform system-level operations, such as rebooting, halting, or snapshotting the device1.These operations are required to mount, unmount, and copy files to and from the USB drive2. To add the system-control permission flag to the operations class, you need to perform the following steps:

Enter the configuration mode: user@host> configure

Navigate to the system login class hierarchy: user@host# edit system login class operations

Add the system-control permission flag: user@host# set permissions system-control

Commit the changes: user@host# commit

login (System)

How to mount a USB drive on EX/SRX/MX/QFX Series platforms to import/export files

The two valid modes for the Juniper ATP Appliance are all-in-one and core. The all-in-one mode is a single appliance that performs both the collector and the core functions. The collector function collects traffic from the network and sends it to the core function for analysis and detection. The core function performs the threat detection, mitigation, and analytics. The all-in-one mode is suitable for small to medium-sized networks that do not require high scalability or performance. The core mode is a dedicated appliance that performs only the core function. The core mode is used in conjunction with one or more collector appliances that collect traffic from the network and send it to the core appliance for analysis and detection. The core mode is suitable for large-scale networks that require high scalability and performance.Reference: Juniper Security, Professional (JNCIP-SEC) Reference Materials source and documents: https://www.juniper.net/documentation/en_US/junos/topics/concept/security-atp-appliance-overview.html

The security feature that bypasses routing or switching lookup is transparent mode. The other options are incorrect because:

B) Secure wire is a feature that allows you to connect two interfaces on the same device and forward traffic between them without any processing.Secure wire does not bypass routing or switching lookup, but rather eliminates them altogether1.

C) Mixed mode is a mode of operation for SRX Series devices that allows you to configure both transparent mode and switching mode on the same device.Mixed mode does not bypass routing or switching lookup, but rather uses them depending on the interface type2.

D) MACsec (Media Access Control Security) is a feature that provides encryption and authentication for Layer 2 traffic.MACsec does not bypass routing or switching lookup, but rather operates at a lower layer3.

Therefore, the correct answer is

A) Transparent mode is a mode of operation for SRX Series devices that provides Layer 2 bridging capabilities with full security services. In transparent mode, the SRX Series device acts as a bridge between two network segments and inspects the packets without modifying the source or destination information in the IP packet header. The SRX Series device does not have an IP address in transparent mode, except for the management interface.Transparent mode bypasses routing or switching lookup, because the SRX Series device does not perform any routing or switching functions, but rather forwards the packets based on the MAC addresses4.

Secure Wire Overview

Mixed Mode Overview

MACsec Overview

Transparent Mode Overview